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Thread: Arca Swiss RM3D - versions?

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    Senior Member ceh's Avatar
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    Arca Swiss RM3D - versions?

    I checked the picture of the product,but it seems to me that this version is different than others RM3D:



    ussual version:



    Can anybody explain the function differences please?
    The first image is a demo camera with a lens an a finder for good price.
    Thank you for your help.

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    Re: Arca Swiss RM3D - versions?

    This is an earlier version of the RM3. For more information see, e.g,

    View Cameras and Optics: Arca-Swiss R-Line Camera

    Compared to the newer version, movements are restricted. The current version is, IMHO, a substantially improved design. Compare, e.g., the way you shift on this model and the current one ...

    Chris

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    Re: Arca Swiss RM3D - versions?

    Also note the most current RM3D*i* -- the *i* version allows the front standard to be rotated 90 degrees and remounted, thus turning the tilt movements to swing movements. On the older non i version, you had to lay the camera over on its side to get swing.

    Also, the *i* version has an electronic interface built in that will allow for the benefits from the upcoming "eModule" now in beta to communicate with the camera body settings. The eModule gives digital readouts for focus distances and DoF's for different lenses at different working apertures, has a sonic distance measuring device for accurate interior work and has an onboard electronic level. I will be writing some more about this device very soon, so stay tuned
    Jack
    home: www.getdpi.com

    "Perfection is not attainable. But if we chase perfection, we can catch excellence."

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    Re: Arca Swiss RM3D - versions?

    Quote Originally Posted by Jack View Post
    Also, the *i* version has an electronic interface built in that will allow for the benefits from the upcoming "eModule" now in beta to communicate with the camera body settings. The eModule gives digital readouts for focus distances and DoF's for different lenses at different working apertures, has a sonic distance measuring device for accurate interior work and has an onboard electronic level. I will be writing some more about this device very soon, so stay tuned
    As a starter, there is a short video (in French) in which Martin Vogt is showing the eModule:

    Le e-module pour la série R-line d'Arca-Swiss - YouTube

    Looking forward to your posting on the eModule!

    Chris

    Chris

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    Senior Member ceh's Avatar
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    Re: Arca Swiss RM3D - versions?

    Jack,Chris,
    Thank you for your remarks.

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    Senior Member ceh's Avatar
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    Re: Arca Swiss RM3D - versions?

    I have received the list of functional differences between the new and the old type from the seller:

    First image Arca Swiss Rm3d is the first production version after the prototypes and it has the following movements:

    Tilt 10°
    Left 10 mm Right 10mm
    Rise 20mm
    Fall 5 mm
    The tilt micrometric is the same as the regular version and compared to the Rm3di by rise and fall the lens moves.


    The Rm3di (the newer model) has the following movements:
    Tilt 10°
    Left 20 mm Right 20mm
    Rise 30mm
    Fall 10 mm
    By rise and fall only the back moves - this is important for vertical stitching.

    How much will those defferences limit my practice?
    With the technical camera I will shoot landscapes and I think of a digi back with the 48x36 (Leaf Aptus 75) sensor.

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    Re: Arca Swiss RM3D - versions?

    Quote Originally Posted by ceh View Post
    First image Arca Swiss Rm3d is the first production version after the prototypes and it has the following movements:

    Tilt 10°
    Left 10 mm Right 10mm
    Rise 20mm
    Fall 5 mm
    The tilt micrometric is the same as the regular version and compared to the Rm3di by rise and fall the lens moves.

    How much will those defferences limit my practice?
    If you want to be able to (flat) stitch images (and this is not restricted by the image circle of your lenses) I'd definitely go for the larger movements. As you say yourself, vertical stitching won't work as the lens is moving. Only you will know if this is important but I would definitely try to get your hands on both models - as I wrote above, to me the RM3di is a much better camera body. (If the RM3di is out of reach, I would rather have a closer look at the Cambo - but this is all very subjective!).

    Chris

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    Re: Arca Swiss RM3D - versions?

    Actually the Rm3di has the following movements:

    Tilt up or down 5 degrees (if you rotate the plate this can be swing 5 degrees)
    shift left 15mm shift right 15mm
    Rise 30mm
    Fall 20mm.

    These are the standards while leaving the camera in the normal orientation.
    If you use an L bracket, you can rotate the camera 90 degrees and use the rise and fall for shift, giving you 30mm left and 20mm right. Something I do often.

    Paul Caldwell

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    Re: Arca Swiss RM3D - versions?

    This discussion seems predicated on the assumption that the RM3Di is available in some meaningful sense. Is that the case?

    Just Curious,

    Matt

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    Re: Arca Swiss RM3D - versions?

    If I am not mistaken, it's the most current model from Arca unless I missed
    an announcement, usually 4 to 6 weeks to get from date of order. I agree it's rarely something found "on the shelf".

    If you are interested in one, I would contact Rod Klukas, the U.S. Arca rep. as he will have better info on lead times. If you are outside the U.S., Rod might still be able to help.

    PM me if you would like his contact info.

    Paul

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    Re: Arca Swiss RM3D - versions?

    Paul,

    Thank you. I see that Rod has an ad at the top of this page. Nice to see more of an Arca presence online.

    --Matt

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    Senior Member ceh's Avatar
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    Re: Arca Swiss RM3D - versions?

    Thanx to all for the useful infos.

    Cenek

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    Senior Member ceh's Avatar
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    Re: Arca Swiss RM3D - versions?

    Paul,
    I am awaiting the answers of two Europian dealers. If I am not successful, I'll take advantage of your offer.
    I saw R.Klukas' clip at vimeo.com and similar instructional videos at:
    arca swiss r-line

    Cenek

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    Re: Arca Swiss RM3D - versions?

    You can also contact us. You know you'll always get straight answers rather than what the manufacturer itself is claiming. For instance the e-module: while on paper it's one of the most exciting things to ever happen to tech cameras, it has been "around the corner" for a long, long time, and at this point I refuse to be excited about, or make any decisions based on, it's availability until it's actually been shipped (en masse) and broadly tested by ourselves and our customers.

    Here are easy references for movement and size for the current Arca bodies
    Arca R :: Capture Integration – Medium Format Digital Back Sales & Rental and Other Professional Photographic Equipment

    Doug Peterson (e-mail Me)
    __________________

    Head of Technical Services, Capture Integration
    Phase One Partner of the Year
    Mamiya Leaf, Leica, Arca Swiss, Cambo, Profoto, LaCie, Canon, TTI, Broncolor & More

    National: 877.217.9870 | Cell: 740.707.2183
    Newsletter | RSS Feed
    Buy Capture One 6 at 10% off

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    Re: Arca Swiss RM3D - versions?

    Doug,

    You must have missed the fact I had an eModule on my Arca while we were both in Death Valley together . Yes it is a beta unit, but it is pretty neat what it can do and promises to be a stellar product -- of course assuming Arca can get it into production. One issue with Arca is they have trouble keeping the supply chain meeting demand with most of their products...
    Jack
    home: www.getdpi.com

    "Perfection is not attainable. But if we chase perfection, we can catch excellence."

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    Re: Arca Swiss RM3D - versions?

    Quote Originally Posted by Jack View Post
    You must have missed the fact I had an eModule on my Arca while we were both in Death Valley together . Yes it is a beta unit, but it is pretty neat what it can do and promises to be a stellar product -- of course assuming Arca can get it into production. One issue with Arca is they have trouble keeping the supply chain meeting demand with most of their products...
    I know you had a beta that was "somewhat working on your system. Absolutely. It's an extremely PROMISING product. But it's not here yet. Here are a small sampling of the descriptions of delivery dates:

    "As of mid-June [2009] it was not quite ready for production"
    Arca Swiss Rm3d Review

    "in a few months" - from what I was told at Photokina in Fall 2010.
    Hands On: the new Arca Swiss RM3Di :: Capture Integration – Medium Format Digital Back Sales & Rental and Other Professional Photographic Equipment

    "in a few weeks" - based on email communication in Spring 2011.

    "in a few days" - based on email communication in Fall 2011.

    Like I said, it's a potentially revolutionary product. But they have worn out their "benefit of the doubt" with me regarding time lines for delivery. I will gladly scream from the mountain tops about the e-module. But I will only do so once it is in my hands with several on the shelf ready to test and ship.

    Doug Peterson (e-mail Me)
    __________________

    Head of Technical Services, Capture Integration
    Phase One Partner of the Year
    Mamiya Leaf, Leica, Arca Swiss, Cambo, Profoto, LaCie, Canon, TTI, Broncolor & More

    National: 877.217.9870 | Cell: 740.707.2183
    Newsletter | RSS Feed
    Buy Capture One 6 at 10% off

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    Re: Arca Swiss RM3D - versions?

    Quote Originally Posted by MGrayson View Post
    Paul,

    Thank you. I see that Rod has an ad at the top of this page. Nice to see more of an Arca presence online.

    --Matt
    Matt I see you are in NYC . We have a nice selection of ARCA-SWISS equipment available for demo,rental and sale at our NYC offices.

    You should stop by some time.

    Lance
    LANCE SCHAD - Digital Transitions - Phase One,Mamiya | Leaf,Arca-Swiss,Cambo, Profoto
    direct/cell:610-496-5586 office:877-367-8537x224
    http://www.digitaltransitions.com email:[email protected]

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    Re: Arca Swiss RM3D - versions?

    Are my search skills weak, or is there really no iPhone App for determining the camera settings on the RM3Di? That can't be right...
    --Matt

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    Re: Arca Swiss RM3D - versions?

    Quote Originally Posted by MGrayson View Post
    Are my search skills weak, or is there really no iPhone App for determining the camera settings on the RM3Di? That can't be right...
    --Matt
    At the risk of upsetting the Arca crowd I'd just say that it shouldn't be surprising that a company that doesn't even have a web presence doesn't have an iPhone app ...

    (kudos to Rod Klukas for filling the gap btw)
    Remember: adventure before dementia!

    As Oscar Wilde said, "my tastes are simple, I only like the best"

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    Re: Arca Swiss RM3D - versions?

    Quote Originally Posted by MGrayson View Post
    Are my search skills weak, or is there really no iPhone App for determining the camera settings on the RM3Di? That can't be right...
    --Matt
    yup,
    there is one, it is a calculator.
    divide a lens specific number by the distance and then add a constant.
    there you go.
    -bob

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    Re: Arca Swiss RM3D - versions?

    Quote Originally Posted by Bob View Post
    yup,
    there is one, it is a calculator.
    divide a lens specific number by the distance and then add a constant.
    there you go.
    -bob


    I wasn't implying it was a difficult calculation. I imagined an electronic version of the viewfinder drums, that's all.

    I assume the constant is for DoF, as the "0" setting matches infinity, right?

    --Matt

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    Re: Arca Swiss RM3D - versions?

    Quote Originally Posted by GrahamWelland View Post
    At the risk of upsetting the Arca crowd I'd just say that it shouldn't be surprising that a company that doesn't even have a web presence doesn't have an iPhone app ...

    (kudos to Rod Klukas for filling the gap btw)
    I was thinking of writing one, but Bob let the secret out.

    --Matt

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    Re: Arca Swiss RM3D - versions?

    no, the lens dependent constant related to helical pitch and focal length (actually rear nodal point distance at infinity) and the constant is a calibration factor for your specific lens/camera/back combination. The result is the helical's setting for that distance.

    DOF is a standard calculation but better based on your intended use since DOF is fundamentally dependent on your circle of confusion which varies depending on use and output size.
    -bob

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    Re: Arca Swiss RM3D - versions?

    Interesting. The lens-dependent constant I understood. It was the additive one that confused me. I just plugged infinity into your formula and got the additive constant as the infinity setting. I was under the (obviously false) impression that all lenses had the same infinity setting, but I understand that calibration could show slight differences.
    --Matt

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    Re: Arca Swiss RM3D - versions?

    Quote Originally Posted by MGrayson View Post
    Interesting. The lens-dependent constant I understood. It was the additive one that confused me. I just plugged infinity into your formula and got the additive constant as the infinity setting. I was under the (obviously false) impression that all lenses had the same infinity setting, but I understand that calibration could show slight differences.
    --Matt
    It is your personal calibration constant.
    I have noticed that with longer lenses there is a small thermal coefficient that you might apply, but it is pretty small based on my limited testing.
    One other factor which you might consider is the focus shift that occurs as you stop down.
    Xcode here I come LOL
    -bob

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    Re: Arca Swiss RM3D - versions?

    Quote Originally Posted by Bob View Post
    It is your personal calibration constant.
    I have noticed that with longer lenses there is a small thermal coefficient that you might apply, but it is pretty small based on my limited testing.
    One other factor which you might consider is the focus shift that occurs as you stop down.
    Xcode here I come LOL
    -bob
    Focus shift? At this price point?

    I kid. It's not a question of which aberrations, it's only a question of how much of each. :sigh: <- Hey! Why doesn't that make an exasperated emoticon?

    --Matt

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    Re: Arca Swiss RM3D - versions?

    Quote Originally Posted by MGrayson View Post


    I imagined an electronic version of the viewfinder drums, that's all.
    It's called an "eModule" and with luck will be in production before 2013. Or 2014. Or...
    Jack
    home: www.getdpi.com

    "Perfection is not attainable. But if we chase perfection, we can catch excellence."

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    Re: Arca Swiss RM3D - versions?

    Quote Originally Posted by Jack View Post
    It's called an "eModule" and with luck will be in production before 2013. Or 2014. Or...
    I think mine is scheduled to arrive before June 2015
    -bob

    anybody have a canned design for a three lead hall-effect transducer to iPhone cable?
    I might get mine sooner if I build it myself

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    Re: Arca Swiss RM3D - versions?

    It's that pesky Unobtainium that Arca use. At least Alpa just build gear that you can buy, albeit at equivalent platinum pricing.

    Btw, Doug's description of Arca's delivery schedule sounds very familiar in the software business.
    Remember: adventure before dementia!

    As Oscar Wilde said, "my tastes are simple, I only like the best"

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    Re: Arca Swiss RM3D - versions?

    Quote Originally Posted by GrahamWelland View Post
    It's that pesky Unobtainium that Arca use. At least Alpa just build gear that you can buy, albeit at equivalent platinum pricing.

    Btw, Doug's description of Arca's delivery schedule sounds very familiar in the software business.
    Yeah, anything other than shipping notification means not this quarter

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    Re: Arca Swiss RM3D - versions?

    Quote Originally Posted by GrahamWelland View Post
    At the risk of upsetting the Arca crowd I'd just say that it shouldn't be surprising that a company that doesn't even have a web presence doesn't have an iPhone app ...

    (kudos to Rod Klukas for filling the gap btw)
    Rod's website has recently been redesigned:
    Arca-Swiss & Large Format Photography – Rod Klukas

    with pages specific to Arca-Swiss in 2 places:

    Arca-Swiss Information | Arca-Swiss & Large Format Photography – Rod Klukas
    Video | Arca-Swiss & Large Format Photography – Rod Klukas

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