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Thread: A7RII + Cambo Actus

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    A7RII + Cambo Actus

    First try with the A7RII on the Cambo Actus. Used the standard bellows with a Rodenstock APO-Grandagon 55mm f/4.5. A 4 shot pano at f/11, ISO 50 with about 1 degree downward tilt. Stitched in LR with Photomerge. Final is a 74 MP image, click to get link to full size image.

    The setup




    4 shot pano

    Carl
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    Re: A7RII + Cambo Actus

    Three more garden shots with the A7RII+55mm Rode on the Actus.





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    Re: A7RII + Cambo Actus

    Very impressive!
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    Re: A7RII + Cambo Actus

    Great thread - for me the most interesting of all the A7RII ones that have appeared.

    Would love to see results from the A7RII on the Actus with some shifted modern wide angle lenses, especially non-retrofocus ones; I'm keen to know how this sensor tech performs with the aforementioned.

    Jim

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    Re: A7RII + Cambo Actus

    Can somebody confirm that the Actus does NOT have front rise? Just front tilt.
    Looking at the image of the camera itself it also appears that way I really don't get it why they would omit that and loose out on the architectural photographers. That need front rise and fall. Can somebody kindly confirm that? I was looking at an Actus myself but now I am hesitant
    Thanks

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    Re: A7RII + Cambo Actus

    Quote Originally Posted by rupho View Post
    Can somebody confirm that the Actus does NOT have front rise? Just front tilt.
    Looking at the image of the camera itself it also appears that way I really don't get it why they would omit that and loose out on the architectural photographers. That need front rise and fall. Can somebody kindly confirm that? I was looking at an Actus myself but now I am hesitant
    Thanks
    Front swing and tilt, rear rise/fall and shift.
    Carl
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    Senior Member Annna T's Avatar
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    Re: A7RII + Cambo Actus

    Quote Originally Posted by rupho View Post
    Can somebody confirm that the Actus does NOT have front rise? Just front tilt.
    Looking at the image of the camera itself it also appears that way I really don't get it why they would omit that and loose out on the architectural photographers. That need front rise and fall. Can somebody kindly confirm that? I was looking at an Actus myself but now I am hesitant
    Thanks
    I think that architecture photographers prefer to use back fall to front rise. I'm not sure why, but I think that by this you avoid moving the lens and thus you don't have to readjust focus after readjusting your movement.
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    Re: A7RII + Cambo Actus

    by not moving (shifting) the lens, you retain relative positioning and alignment of objects in the image. tilting/swinging the lens instead of the back retains what amounts to perspective correction
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    Re: A7RII + Cambo Actus

    Quote Originally Posted by jlm View Post
    by not moving (shifting) the lens, you retain relative positioning and alignment of objects in the image.
    And parallax free shifting/stitching.

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    Re: A7RII + Cambo Actus

    Three images taken today with the A7RII and 47mm f/5.6 SK XL digitar mounted on the Actus with standard rail and bellows. Good sharpness across frame and no serious edge/corner issues, nor color shifting. Lens was mounted in an NK-0 aperture mount with no shutter.

    The Meyers Point light on Cayuga Lake, single shot, click for full size link.



    Two shot stitch of the harbor at Meyers Point. Click for full size link.



    Three shot stitch of the view to Portland Point and salt mine from Meyers Point. Click for full size link.

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    Re: A7RII + Cambo Actus

    A few garden shots with the A7RII on the Cambo Actus with SK 47mm f/5.6 XL APO lens. All are two shot stitched panos. Click image to get Flickr page with link to original full size image. Very sharp with excellent detail resolution.







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    Re: A7RII + Cambo Actus

    carl, could you post a detail shot of how the A7 fits the rear standard, esp curious about portrait orientation and the difference between the DB and A& rear standards.

    also how wide a lens have you been able to fit and get to inf focus?

    thx

    jm

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    Re: A7RII + Cambo Actus

    The first one is a keeper : good light and nice composition.

    Quote Originally Posted by scho View Post
    A few garden shots with the A7RII on the Cambo Actus with SK 47mm f/5.6 XL APO lens. All are two shot stitched panos. Click image to get Flickr page with link to original full size image. Very sharp with excellent detail resolution.


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    Re: A7RII + Cambo Actus

    Quote Originally Posted by jlm View Post
    carl, could you post a detail shot of how the A7 fits the rear standard, esp curious about portrait orientation and the difference between the DB and A& rear standards.

    also how wide a lens have you been able to fit and get to inf focus?

    thx

    jm
    Three shots below of A7RII on the Actus. Push silver lever up to rotate mount between portrait/landscape orientation. The SK 47 is the widest that I can use on the regular rear standard and bellows. The optional rear standard for wider lenses I think will allow down to 32mm.







    One more showing how little room you have for movements when focus is at infinity.

    Carl
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    Re: A7RII + Cambo Actus

    Hmm, one advantage I see to the Arca, then is that there is almost nothing between the body's lens mount and the rear of your given lens... so no restrictions on movement.

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    Re: A7RII + Cambo Actus

    Quote Originally Posted by Chris Barrett View Post
    Hmm, one advantage I see to the Arca, then is that there is almost nothing between the body's lens mount and the rear of your given lens... so no restrictions on movement.
    But it is not just the Actus mount that impedes movement. The rear lens element still goes into the A7 body mount near infinity focus and would be even more limited with wider LF lenses (assuming the diameter of the rear lens element even allows the lens to get that close).
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    Re: A7RII + Cambo Actus

    Quote Originally Posted by scho View Post
    But it is not just the Actus mount that impedes movement. The rear lens element still goes into the A7 body mount near infinity focus and would be even more limited with wider LF lenses (assuming the diameter of the rear lens element even allows the lens to get that close).
    I'm sure I was able to shift my 35 & 43 12 - 15mm on the Arca. How much movement are you getting? I've replaced most of my Schneiders with Hasselblad glass, so it's kind of a moot point for me.

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    Re: A7RII + Cambo Actus

    Quote Originally Posted by Chris Barrett View Post
    I'm sure I was able to shift my 35 & 43 12 - 15mm on the Arca. How much movement are you getting? I've replaced most of my Schneiders with Hasselblad glass, so it's kind of a moot point for me.
    I get about 10mm shift max using the 47 on the Actus. The Hasselblad lenses are a good option and I have used them a few times on the Actus, particularly the 40. If I need to go wider with movements then I would just use a TS lens and forget the Actus.
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    Re: A7RII + Cambo Actus

    way to go Carl. Very very impressed in deed.

    Although, on a side note, when I see this blue light on some of the shots covered by the well known aluminium casing I get a flippin hissy fit. In the space of less than 2 weeks I had 3 of them Lacie's 2TB crap out on me, yeppers, three!!!

    I spare you the results of the support phone calls, utterly useless to put it mildly.

    Total data loss = zero, thankfully due to back up strategy. Nevertheless, it really sucks, and this was the last Lacie that finds a home in my setup. Never again! Talk about WD support, due to move from Ireland to Germany I had lost one of the power wallwarts, send them an email, and 6 days later I had a new one at no cost.

    Anyhow, fantastic setup Carl and equally great results. Love it!
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    Re: A7RII + Cambo Actus

    Quote Originally Posted by scho View Post
    Three shots below of A7RII on the Actus. Push silver lever up to rotate mount between portrait/landscape orientation. The SK 47 is the widest that I can use on the regular rear standard and bellows. The optional rear standard for wider lenses I think will allow down to 32mm.







    One more showing how little room you have for movements when focus is at infinity.

    Go for Rodenstock WA 40mm, still have about 2~3mm space between the front and rear standard, however, you can't do left side shift as the handle will hit the front standard...
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    Re: A7RII + Cambo Actus

    Quote Originally Posted by kimyeesan View Post
    Go for Rodenstock WA 40mm, still have about 2~3mm space between the front and rear standard, however, you can't do left side shift as the handle will hit the front standard...
    Would you mind posting a picture of the Rodenstock 40mm and Actus at infinity? I'm interested in getting this lens but would love to see where it hits the handle and how much shift you can get.

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    Re: A7RII + Cambo Actus

    Quote Originally Posted by kimyeesan View Post
    Go for Rodenstock WA 40mm, still have about 2~3mm space between the front and rear standard, however, you can't do left side shift as the handle will hit the front standard...
    I hadn't thought about this issue but the Sony handle shouldn't be an issue in Portrait position. So I could still get lateral shifting to my hearts content - only limited by the image circle and/or how far the lens extends out the back of the standard. I would really only use the camera in Portrait position anyway.... just makes more sense to me as many times I only do single row pano's.

    Victor

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    Re: A7RII + Cambo Actus

    Have you tried this with the HR 40mm and what were the results/size of the image you were able to capture? I am interested in your findings.

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    Re: A7RII + Cambo Actus

    Quote Originally Posted by markymarkrb View Post
    Have you tried this with the HR 40mm and what were the results/size of the image you were able to capture? I am interested in your findings.
    I don't have the 40 HR and I'm perfectly happy with the SK 47 and Rodenstock 55 for stitching landscapes. I have the 45 Grandagon also but performance is poor compared to the 47 and 55 and it also requires the WA bellows and rear standard to get inf focus. If you don't need tilt or shift then perhaps the wider lenses would be nice for one shot landscapes, but then you really don't need an Actus either - just shoot directly with any of the native wide angle lenses available.
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    Re: A7RII + Cambo Actus

    Sorry, late to reading this good thread. Some things to point out:

    The amount of shift with the 47 Digitar for example, is not necessarily impacted by the Actus. The rear element intrudes into the Actus mount for the Sony, but it is prudent to re-focus when shifting anyway on a wide lens with significant curvature. So you would back out, shift, and re-focus. The additional depth of the Sony camera mount is necessary to provide the excellent seamless rotation lever to operate so smoothly and to maintain registration. Also the Sony grip does not impact the Actus standard, since when shifted, the Sony camera and standard move as one. I have not used the 40mm HR with the Sony, but I would expect the shift potential to be similar to the Schneider 43, perhaps a bit more.


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    Re: A7RII + Cambo Actus

    From a sensor technology standpoint I'm very interested how well the A7r-II handles the tech wides, as I expect similar technology to appear in future digital backs.

    In theory BSI which move photo diodes closer to the surface should provide the sensor with much better angular response, and thus lower issues with crosstalk and color cast.

    I've heard indications that the A7r-II doesn't provide much improvement, if any, over the old one, but I don't really know if that's a mechanical issue (body gets in the way) or if it's a color cast issue.

    Anyone who knows if the BSI technology in the A7r-II provides an improvement in tech wide compatibility or not compared to the A7r?


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    Re: A7RII + Cambo Actus

    Hi,

    Firstly sorry for my poor English language. Over the last few years I was using ALPA MAX with custom adapters for Sony NEX-7 and lenses for nikon (14-24, 60) and Mamiya. I decided to switch to full frame and a camera that allows me to use LF lenses. A few months ago I bought Sony A7R2 (A7RII) and Cambo Actus. At the beginning I was using it with my Nikkor lenses and Pentax645 35mm. Yesterday I decided to order non-rotating back Actus (ACB-310) and Roddie 40HR and 32HR for tests. It happens out just before ordering that I can`t use non-rotating back with new Sony A7 mk2 (nor A7RII, A7II, A7SII) because of the bigger camera body grip. They didn`t give any further information. I`m curious if this is a problem with cambo adapter itself or they just warn me about the problem with shifting left with very short LF lenses and potential crashing with camera body grip. Anyone knows? Scho, can You tell me how far You can go with 47XL shifting left. SK has a smaller rear diameter, but it is still big and comparable with Rodenstock 40HR. Now I`m thinking about switching to Arca Universalis but maybe this doesn`t solve the problem.

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    Re: A7RII + Cambo Actus

    Quote Originally Posted by Jakub Certowicz View Post
    Hi,

    Firstly sorry for my poor English language. Over the last few years I was using ALPA MAX with custom adapters for Sony NEX-7 and lenses for nikon (14-24, 60) and Mamiya. I decided to switch to full frame and a camera that allows me to use LF lenses. A few months ago I bought Sony A7R2 (A7RII) and Cambo Actus. At the beginning I was using it with my Nikkor lenses and Pentax645 35mm. Yesterday I decided to order non-rotating back Actus (ACB-310) and Roddie 40HR and 32HR for tests. It happens out just before ordering that I can`t use non-rotating back with new Sony A7 mk2 (nor A7RII, A7II, A7SII) because of the bigger camera body grip. They didn`t give any further information. I`m curious if this is a problem with cambo adapter itself or they just warn me about the problem with shifting left with very short LF lenses and potential crashing with camera body grip. Anyone knows? Scho, can You tell me how far You can go with 47XL shifting left. SK has a smaller rear diameter, but it is still big and comparable with Rodenstock 40HR. Now I`m thinking about switching to Arca Universalis but maybe this doesn`t solve the problem.
    Hi Jakub,

    I no longer have the A7RII and only use the A7R-FS and grip is smaller with no problems. I also do not use the fixed rear standard (not necessary with the 47XL). You probably should contact Steve Hendrix for info on use of the 40 and 32 on the Actus. I had no problems shifting left with the 47XL when I was using the A7RII, but I don't recall exactly how much shift was possible.
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    Re: A7RII + Cambo Actus

    Scho,
    is there room for the battery grip? I am looking at getting the Actus for product/real estate work and was wondering if I would have to remove the battery grip from my A7 II.

    Also, if you are using the bellows to focus, what do you set the lens to? I am getting a mamiya rz 140mm macro lens to use with an actus on my A7 II and was wondering how I set up the lens.
    Last edited by etrigan63; 9th January 2016 at 16:27. Reason: Thought of something else to ask
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    Re: A7RII + Cambo Actus

    IIRC the A7R II / A7II with grip wont fit. My Actus & A7RII were stolen a month or so ago so I can't double check and I'm working from memory (and senility!) but I do know that I had to mount the A7RII without the grip to have it fit. I normally use the A7RII with a grip so removing it was a deliberate action that I wouldn't otherwise do.
    Ylem ...
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    Re: A7RII + Cambo Actus

    Quote Originally Posted by etrigan63 View Post
    Scho,
    is there room for the battery grip? I am looking at getting the Actus for product/real estate work and was wondering if I would have to remove the battery grip from my A7 II.

    Also, if you are using the bellows to focus, what do you set the lens to? I am getting a mamiya rz 140mm macro lens to use with an actus on my A7 II and was wondering how I set up the lens.
    Hi Carlos,

    I never used a battery grip so can't comment, but Graham has answered that question. If you are shooting macros at close distance then you might have to set the lens distance accordingly, but otherwise I don't think it matters what lens setting you use when using the bellows to focus.
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    Re: A7RII + Cambo Actus

    Graham,
    I am saddened to hear that you gear got stolen. Hopefully it will be recovered.

    Graham and Scho,
    I kind of suspected that the battery grip would have to be removed. Thanks for confirming this. I was looking to get an Actus Mini for product work, but it also gives me the flexibility to do architecture as well. I just picked up an RZ 140mm Macro lens from the 'bay for about $1/mm and was planning on using it with the Actus and my A7 II. I will likely rent from CI at first until a few more gigs come in.
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    Re: A7RII + Cambo Actus

    The grip worked in portrait mode but not landscape obviously.
    Ylem ...

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    Re: A7RII + Cambo Actus

    Now Cambo has released the Canon bayonet apadter for the Actus, can the 17mm shift lens be used on the Actus and a7rii?

    Thanks.

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    Re: A7RII + Cambo Actus

    Quote Originally Posted by NoBob View Post
    Now Cambo has released the Canon bayonet apadter for the Actus, can the 17mm shift lens be used on the Actus and a7rii?

    Thanks.
    Probably, but it sounds redundant. The Actus provides tilts, swings and shifts.
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    Re: A7RII + Cambo Actus

    Quote Originally Posted by etrigan63 View Post
    Probably, but it sounds redundant. The Actus provides tilts, swings and shifts.
    From what i understand, not entirely redundant : the TSE lenses will only provide movements of the lens (aka front standard), but the Actus would offer much more liberty in movements, in particular movements of the rear standard (camera). So one could combine left and right shift with rise and fall.
    Not sure whether that would offer as much freedom as a true view camera like an Arcaswiss, however.

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    Re: A7RII + Cambo Actus

    And stitching with the 17mm would be easier.

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    Re: A7RII + Cambo Actus

    Quote Originally Posted by Annna T View Post
    From what i understand, not entirely redundant : the TSE lenses will only provide movements of the lens (aka front standard), but the Actus would offer much more liberty in movements, in particular movements of the rear standard (camera). So one could combine left and right shift with rise and fall.
    Not sure whether that would offer as much freedom as a true view camera like an Arcaswiss, however.
    The front plate of the Actus provides tilt/swing. The rear plate provides up/down/left/right shifts.

    Quote Originally Posted by NoBob View Post
    And stitching with the 17mm would be easier.
    It is my understanding that moving the camera in the image circle is preferable to shifting the image circle around the camera. The Actus is micrometered like the TSE lens. Applying movements at both ends sounds like a recipe for failure.
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    Re: A7RII + Cambo Actus

    Quote Originally Posted by etrigan63 View Post
    It is my understanding that moving the camera in the image circle is preferable to shifting the image circle around the camera. The Actus is micrometered like the TSE lens. Applying movements at both ends sounds like a recipe for failure.
    Thats how all large format function so hardly a recipe for failure considering the period of time these cameras have been used by photographers without incident.

    Using the 17TSE and 24TSE on the Actus would sure alleviate having to use annoying diagonal movements and the older 45mmTSE and (excellent) 90mmTSE would then have movements on multiple planes unlike how they currently work. Locking all the movements on the TSE lenses and there should never be cause for worry.
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    Re: A7RII + Cambo Actus

    Quote Originally Posted by gazwas View Post
    Thats how all large format function so hardly a recipe for failure considering the period of time these cameras have been used by photographers without incident.

    Using the 17TSE and 24TSE on the Actus would sure alleviate having to use annoying diagonal movements and the older 45mmTSE and (excellent) 90mmTSE would then have movements on multiple planes unlike how they currently work. Locking all the movements on the TSE lenses and there should never be cause for worry.
    Another benefit comes from the larger image circle of the TSE lenses. Even if you are only moving the body, you benefit from their larger coverage : they are smaller than the medium or large format lenses, don't have the same rear protruding elements that could limit movements or prevent infinity focus with the 35mm format and they are the only ones offering wide angle focal lengths. I must say that i'm tempted by one of these solution (HCAM, Actus, or the Arca universalis).
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    Re: A7RII + Cambo Actus

    I'd be all in on the Arca if it wasn't for the strange L-bracket camera mounting that seems overly fussy to me and now the Actus offers the Canon auto lens mount its by far the moat rounded system of all these mini vies cameras. I'm very tempted and hope to have a good look at one very soon.
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    Re: A7RII + Cambo Actus

    "Applying movements at both ends" is what I do with my 4x5 film camera.

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    Re: A7RII + Cambo Actus

    Quote Originally Posted by scho View Post
    First try with the A7RII on the Cambo Actus. Used the standard bellows with a Rodenstock APO-Grandagon 55mm f/4.5. A 4 shot pano at f/11, ISO 50 with about 1 degree downward tilt. Stitched in LR with Photomerge. Final is a 74 MP image, click to get link to full size image.

    The setup




    4 shot pano

    Hello,

    I must say that these results are very impressive and now I am curious about Rodenstock APO-Grandagon 55mm f/4.5. Are you able to share some more info about this lens performance on Sony Alpha 7rII with Cambo Actus Mini? I am particularly interested in how far you could go with the rise and fall and horizontal shifts. Did you notice any colour cast or chromatic aberration when performing shifts? I am currently researching on Cambo Actus Mini and bought a Sony Alpha 7rII especially for this camera, the biggest problem for me at the moment is the choice of the right lenses. Pictures from Rodenstock APO 55mm looks looks fantastic but did you spent a lot of time creating LCC profile and in post production? Are you able to focus with this lens to infinity when using standard bellows? Excuse if I am appearing to be ignorant but I am rather new to the world of LF lenses. I am also considering some MF lenses but still not sure which ones will be best to use on 7rII and Actus- any suggestions would be more than appreciated. I am going to use Actus mainly for architecture and landscapes and as I am a detail freak I love correct colours and sharpness across the whole image. Looking forward to hear more about your experience with Actus and Sony! Thank you.

  44. #44
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    Re: A7RII + Cambo Actus

    Quote Originally Posted by Blazej Marczak View Post
    Hello,

    I must say that these results are very impressive and now I am curious about Rodenstock APO-Grandagon 55mm f/4.5. Are you able to share some more info about this lens performance on Sony Alpha 7rII with Cambo Actus Mini? I am particularly interested in how far you could go with the rise and fall and horizontal shifts. Did you notice any colour cast or chromatic aberration when performing shifts? I am currently researching on Cambo Actus Mini and bought a Sony Alpha 7rII especially for this camera, the biggest problem for me at the moment is the choice of the right lenses. Pictures from Rodenstock APO 55mm looks looks fantastic but did you spent a lot of time creating LCC profile and in post production? Are you able to focus with this lens to infinity when using standard bellows? Excuse if I am appearing to be ignorant but I am rather new to the world of LF lenses. I am also considering some MF lenses but still not sure which ones will be best to use on 7rII and Actus- any suggestions would be more than appreciated. I am going to use Actus mainly for architecture and landscapes and as I am a detail freak I love correct colours and sharpness across the whole image. Looking forward to hear more about your experience with Actus and Sony! Thank you.
    I don't recall having any problems with lateral color casting when using the 55 shifted, but did experience strong magenta casts with the 45 using max lateral shifts. The 55 works well with the standard bellows and will achieve infinity focus. Sharpness is excellent. I never used a LCC profile with the 55 and only standard post processing. As I mentioned before, I don't shoot much architecture so if you need extreme shifts YMMV and that is true for most LF analog lenses used on the Actus.
    Carl
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    Re: A7RII + Cambo Actus

    I'm borrowing a Rodenstock 45 apo sironar digital (purple band) with a view to purchase. I'll be using it mostly in the studio but wondered if anyone has used it at infinity with the a7r/II with the normal standard not the WA one that's definitely needed for the 35?
    never trust the opinion of anyone who lists a load of gear in their forum signature. Dealers do not email me asking to buy your products.

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    Re: A7RII + Cambo Actus

    So I answered my own question. NO withe the rear element touching the lens body standard it's focuses about 3ft in front of the lens, if I could focus in the studio but not at infinity it would be usable.

    I don't shoot wide often enough to warrant buying a new rear standard so I'll have to look at. 47/50 or 55 instead.
    never trust the opinion of anyone who lists a load of gear in their forum signature. Dealers do not email me asking to buy your products.

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    Re: A7RII + Cambo Actus

    Quote Originally Posted by MrSmith View Post
    So I answered my own question. NO withe the rear element touching the lens body standard it's focuses about 3ft in front of the lens, if I could focus in the studio but not at infinity it would be usable.

    I don't shoot wide often enough to warrant buying a new rear standard so I'll have to look at. 47/50 or 55 instead.

    If the rear optic is too large to fit inside the rear standard bayonet mount, then it's a tough call whether the modified rear standard would help. Some of the wide lenses, like the HR-S 35 have small enough rear elements that can fit inside the rear standard bayonet and attain focus, even without the modified version. But what I've found is that it still presents an issue for shifting, since you cannot attain the same focus position when shifting, because the rear standard bayonet mount then blocks the ability of the lens to attain the same depth as the focus position within the bayonet holder when not shifted.

    This is illustrated about 2/3 of the way down my just published article concerning wide angle options on the Actus Camera:

    https://captureintegration.com/seein...e-cambo-actus/


    Steve Hendrix/CI
    Steve Hendrix, Sales Manager, www.captureintegration.com (e-mail Me)
    Digital Cam: Phase One | Leaf | Leica | Sinar Authorized Reseller
    TechCam: Alpa | Cambo | Arca Swiss | Sinar Authorized Reseller
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    Re: A7RII + Cambo Actus

    cambo now have a new 60mm lens
    https://cambouk.wordpress.com/2016/0...-at-photokina/

    looks suspiciously like a rodenstock enlarger apo rodagon optic to me? or maybe schneider?
    never trust the opinion of anyone who lists a load of gear in their forum signature. Dealers do not email me asking to buy your products.

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    Re: A7RII + Cambo Actus

    Quote Originally Posted by MrSmith View Post
    cambo now have a new 60mm lens
    https://cambouk.wordpress.com/2016/0...-at-photokina/

    looks suspiciously like a rodenstock enlarger apo rodagon optic to me? or maybe schneider?

    My guess: an Old stock of Sk componon 60/4 apo hm same as digitar 60/4...

    All the componon apo hm 60/80/90/100 play very well At f8/f11...even the 45apo hm allow 5/7mm of shift on 24x36 sensor with digitar crispiness
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    Re: A7RII + Cambo Actus

    Tried doing some stitching with the Leica R 35-70 Vario-Elmar f/4 on the Cambo Actus with Sony A7R-FS (CC filter on lens). Two images below are composed of two shots each stitched with Photomerge in LR.





    Barely enough room to shift inside the relatively small image circle of the 35-70 @ 35 mm. I'm going to try some of my Pentax 645 lenses next, particularly the Pentax 645 A 35/3.5.
    Carl
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