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Thread: Fun with the 645D

  1. #151
    Workshop Member kuau's Avatar
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    Re: Fun with the 645D

    Spring time Tulips FA 120mm Macro
    Steven

    Steven Kornreich
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  2. #152
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    Re: Fun with the 645D

    What can one say Steve except...simply lovely!!! Great color and subtle OOF and tonal transitions. Would make a great print for the wall! You mentioned Springtime was just arriving your way? Looks like its made a grand entrance and you captured it nicely!

    Dave (D&A)

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    Re: Fun with the 645D

    Nice one Steven. Are those in your yard? I love tulips but the local rabbit population doesn't allow many. This shot could be a good candidate for focus stacking as well.

    Tom

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    Re: Fun with the 645D

    Quote Originally Posted by tsjanik View Post
    Nice one Steven. Are those in your yard? I love tulips but the local rabbit population doesn't allow many. This shot could be a good candidate for focus stacking as well.

    Tom
    Agree Tom! It would be interesting to compare the shot as taken above, compared to a one taken with focus stacking. I suspect that I would prefer this particular shot just the way it is, with a nice smooth transition to OOF areas as opposed to one where the entire field of flowers was within the depth of field (ie: sharp). Then again, that's just a preference.

    Dave (D&A)

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    Re: Fun with the 645D

    Just for fun. I am just preparing for the summer Milky Way. DFA 55mm, f/4.5. 188 seconds, ISO 1600. The corners are not the greatest at f/4.5, I will have to try f/5.6 and see if it tightens up the star images. The Pentax 67 105mm (late) gave better corners at f/4. Shot on an Astrotrac mount.

    I have been playing with my 645D over the last month or so--kicking the tires and slamming the doors. It is a very versatile machine.
    Last edited by Shashin; 5th June 2011 at 18:09.

  6. #156
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    Re: Fun with the 645D

    Quote Originally Posted by tsjanik View Post
    Nice one Steven. Are those in your yard? I love tulips but the local rabbit population doesn't allow many. This shot could be a good candidate for focus stacking as well.

    Tom
    Tom and Dave, Thanks
    Nope not in my backyard, this was taken down in salt lake city at a place called thanksgiving point, during the tulip festival, it was a tricky day to shoot, overcast light was perfect but it was wind, so lots of movement, focus stacking would have been almost impossible.

    Steven
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    Re: Fun with the 645D

    Quote Originally Posted by kuau View Post
    Tom and Dave, Thanks
    Nope not in my backyard, this was taken down in salt lake city at a place called thanksgiving point, during the tulip festival, it was a tricky day to shoot, overcast light was perfect but it was wind, so lots of movement, focus stacking would have been almost impossible.

    Steven
    Steven: can you tell me if you use a specialized program to do focus stacking? It interests me as a technique I could use for landscapes?.
    Dave

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    Re: Fun with the 645D

    The tulips are marvellous! And the astronomical one looks pretty good too - an area where my kit falls down, I've found.

    You can do focus stacking in Photoshop (but it is not called that), I did find a tutorial on it online somewhere, a British photographer guy who puts little films up on you tube.

    Here
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    Re: Fun with the 645D

    Dave:

    I'm just now learning the technique. I've used photoshop for stacking and it seems to work well with simple scenes. Zerene Stacker Pro was recommended to me on the Pentax forum. PS seems to have trouble with complicated scenes, e.g. in this example from yesterday, PS masked perfectly in-focus areas and allowed blurred areas to show, I modified some of the masks but certainly not an automatic process.
    Tom

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    Re: Fun with the 645D

    Hi Tom,

    Interesting composition. Textures, colors and detail is lovely! I don't have the near the experience in focus stacking as you do but have run into the situation in PS as you described. Have you found any drawbacks to Zerene Stacker Pro? Thanks!

    Dave (D&A)
    Last edited by D&A; 10th June 2011 at 05:37.

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    Re: Fun with the 645D

    Helicon Focus is also a good stacking/stitching program. All stitching programs can introduce artifacts--that is just the nature of the process.

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    Re: Fun with the 645D

    Quote Originally Posted by D&A View Post
    Hi Tom,

    Interesting composition. Textures, colors and detail are lovely! I don't have the near the experience in focus stacking as you do but have run into the situation in PS as you described. Have you found any drawbacks to Zerene Stacker Pro? Thanks!

    Dave (D&A)
    I've only tried stacking a few times and only with PS. Zerene was recommended but I have not tried it. I had been mostly a film user until the 645D, so I don't have much exxperience with some digital techniques.

  13. #163
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    Re: Fun with the 645D

    Thanks Tom. I'm trying to determine which of the stacking software has the best combination of ease of use and versitility, without some of the glitches I ran into with PS.

    Dave (D&A)

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    Re: Fun with the 645D

    Quote Originally Posted by ManuelGF View Post
    Pentax Demo Barcelona Fair 75 / 2,8 AF at f13. Processed in cs5. 100% crop.
    Just for grins, here's a quick process to this image done in Portrait Professional that took about 40 seconds.
    Last edited by bradhusick; 17th July 2014 at 09:26.
    Brad Husick

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    Seriously thinking about the 645D

    Hi Gang,

    I am thinking of selling my D3x to move up to the larger sensor and no AA of the 645D. I have read various things about the non-digital designed lenses concerning loss of sharpness and their inability to resolve the sensor. As a shooter for over 45 years I rarely pay attention to the technical minutia. I don't know an MTF chart from an eye chart, but I want good color rendering and sharpness at most settings. As a start, which of these lenses do you prefer for the 645D: 45-85 AF, 75, 120 or 120 AF macro. Does anyone have any experience with the new 55 2.8 that was supposedly designed for this sensor? I will shoot primarily architecture and street scapes with the camera. Also, is there a viable T/S lens made for this camera. My past experience with Hartblei on a Contax 645 with a P25 back was poor.

    Thanks for the help!

    Aboud

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    Re: Fun with the 645D

    Aboud:

    I have the following lenses:

    Pentax 645 DFA 55mm (the new lens)
    Pentax 645 A 35mm manual focus lens
    Pentax 67 105mm lens (late version)

    I am happy with all of them. As with all lenses, stopping down helps, but I am happy shooting wide open as well. The 120 macro, whether MF or AF, is highly regarded. The 45mm Pentax lens has a bad reputation. I tend to choose lenses for their angle of view--a lens may be great, but if it is a focal length I do not use, it is rather a moot point.

    The only shift lens I know of is the 75mm Pentax 67 lens, which would need a 645 to 67 adapter. I have no idea how well it works on the 645D. However, I like my 105mm 67 lens on the 645D and others have had good success with other 67 lenses. I picked up the 105mm for its speed and size, but the 120mm macro is better.

    I would avoid pixel peeping. 100% is not a valid viewing condition, no matter how large you print. Although it is a lot of fun to peep.

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    Re: Fun with the 645D

    Aboud,

    The following lenses are very nice:

    P645:
    35 A or FA
    75 FA
    120 A or FA
    150 FA
    200 FA
    300/5.6 or /4 FA
    400 FA
    45-85 zoom is good

    P67 (needs adapter; pentax version has auto-diaphragm):
    55/4 latest version
    100/4 macro
    200 latest version (less exp than 200 FA, but larger)
    above 3 take 77mm filters.
    (300 latest is nice, but expensive and large, so stick with 645 FA version)

    the latest 55 FA has had more poor reviews than not. The 67 55mm is better, but manual focus (and larger).
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    Workshop Member kuau's Avatar
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    Re: Fun with the 645D

    +1
    Quote Originally Posted by rjones View Post
    Aboud,

    The following lenses are very nice:

    P645:
    35 A or FA
    75 FA
    120 A or FA
    150 FA
    200 FA
    300/5.6 or /4 FA
    400 FA
    45-85 zoom is good

    P67 (needs adapter; pentax version has auto-diaphragm):
    55/4 latest version
    100/4 macro
    200 latest version (less exp than 200 FA, but larger)
    above 3 take 77mm filters.
    (300 latest is nice, but expensive and large, so stick with 645 FA version)

    the latest 55 FA has had more poor reviews than not. The 67 55mm is better, but manual focus (and larger).
    Steven Kornreich
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    Re: Fun with the 645D

    Quote Originally Posted by rjones View Post
    Aboud,

    The following lenses are very nice:

    P645:
    35 A or FA
    75 FA
    120 A or FA
    150 FA
    200 FA
    300/5.6 or /4 FA
    400 FA
    45-85 zoom is good

    P67 (needs adapter; pentax version has auto-diaphragm):
    55/4 latest version
    100/4 macro
    200 latest version (less exp than 200 FA, but larger)
    above 3 take 77mm filters.
    (300 latest is nice, but expensive and large, so stick with 645 FA version)

    the latest 55 FA has had more poor reviews than not. The 67 55mm is better, but manual focus (and larger).
    Quote Originally Posted by kuau View Post
    +1
    +2

    Add the 67 55-100mm zoom and the 67 400mm ED, but both are very heavy and the 645 45-85 and 400 ED are much lighter and very good as well.

  20. #170
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    Re: Fun with the 645D

    If you would like to see the difference between the new 55mm and the 120mm macro, go here (keep scrolling down the test charts are way to the bottom:

    http://www.denjuku.gr.jp/review/201006/95.php

    Chris Willson has done a lot of work with the 55mm as well as the 67 105mm. Here is his site:

    http://travel67.wordpress.com/

    He also has some full resolution images from the 55mm and 67 105mm lenses on his Flicker site.

    Ganref has lots of samples from different lenses on the 645D. They can take some time to load:

    http://ganref.jp/magazines/index/1/0/368

    http://ganref.jp/magazines/index/1/0/369

    You can find more sample images of the new 55mm here--load times can be long and you need to scroll down:

    http://dc.watch.impress.co.jp/docs/r...04_371978.html

    And Pentax Japan has full-res samples as well.

  21. #171
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    Re: Fun with the 645D

    Quote Originally Posted by tsjanik View Post
    +2

    Add the 67 55-100mm zoom and the 67 400mm ED, but both are very heavy and the 645 45-85 and 400 ED are much lighter and very good as well.
    I too agree with this list of good performing lenses on the 645D but keep in mind in some cases, there is great sample to sample variability, which often affects performance at the wider apertures. I've been delayed a number of times, but hope to post my in-depth testing of multiple samples of each of these Pentax 645 FA Af lenses as well as some others in the near future.

    *** (Recent Addition)..... In regards to the latest Pentax FA 55mm f2.8 WR 645 lens..there are some nice pluses but also minuses I found after testing a number of samples of this lens. Center sharpess is excellent, equaling and even surpassing surpassing most any other Pentax 645 lenses near this range. Edge corner resolution drops off, especially at the wider apertures, which is more pronouced as camera to subject distances become greater. So it can be a good lens, depending what one plans to use it for and with it's WR, along with the WR of the body, can often make a worrry free pair in inclement weather. Still for some types of landscape work, there are other lenses that have more even sharpness across the frame. I found sample to sample performance was consistant.

    DAve

    Dave (D&A)
    Last edited by D&A; 11th June 2011 at 06:04.

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    Re: Fun with the 645D

    I have 11 lenses. Maybe I just found a good one, but my 45~85 FA, at f13, 45mm setting, is magnificent for the seascapes I do. I recently made two different 24"x32" prints, matted and framed them. I am VERY happy with this lens. My copy of the 35 A is very good also (subjectively not quite as sharp as the 45~85). Digilloyd (paid site) has an excellent objective review/tests of a whole bunch of lenses. As stated above, he finds the 45mm one of the poorer performers. He raves about the A macro (so do I).Dave in NJ

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    Re: Fun with the 645D

    I spent this early morning at Snow Canyon State Park, Utah, near my home, with my new 645D. Here is a three frame vertical stitch, 35mm @F19, ISO 100. Some minor tweaks but pretty much how the raw file opened up. I'm not sure what size really works best for uploading but here it is.

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    Re: Fun with the 645D

    Well gang, I did it. I bought Steven's 645D and a couple of his lenses and acquired a 45-85 as well. I did sell the D3x, with some hesitation, but something had to give. I would like to get my hands on a pristine 150 3.5 so it there is one out there, drop me a note at [email protected].

    I'm also interested in hearing if anyone has any experience with the Zoerk shift adapter to put 67 lenses on the 645. I was thinking I might sell off my 24 and 45 PC-E if this was a viable solution for architecture. I hear the 67 45MM & 55MM are great for this application. I am just wondering how cumbersome it might be.
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    Re: Fun with the 645D

    Quote Originally Posted by aboudd View Post
    Well gang, I did it. I bought Steven's 645D...
    As one door closes, another opens. Welcome to the club.

  26. #176
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    Re: Fun with the 645D

    Quote Originally Posted by Shashin View Post
    As one door closes, another opens. Welcome to the club.
    Yes, welcome to the club Aboud! Regarding the 150mm f3.5, are you primarily looking at manual focus lenses for the 645D or FA Af ones? Some of the manual focus lenses had the same optical formula as their Af counterparts, some were redesigns The majority of my testing of multiple samples of the same lens (and variosu lesnes for this system) were with the FA af ones. The 150 f3.5 MF lenses is different than the 150mm f2.8 AF. As for the P 67 lenses, early and late versions of the same lenses are available and in some cases, although the optical design seems similar, performance is not. This is especially true in the case of the P67 55mm lens!

    (Addition)...The 45-85mm lenses is a excellent one. Strongest and sharp between 45mm to approx 65mm..then from 65mm to 85mm, most samples tend to loose a bit of resolution...especially on the edeges/corners.

    Sounds like there is going to be some interesting times ahead with the camera Aboud...and I too was reluctant to having had to give up some of my other systems and lenses to acquire it...but no regrets so far. Enjoy!

    Dave (D&A)
    Last edited by D&A; 12th June 2011 at 09:33.

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    Re: Fun with the 645D

    Quote Originally Posted by aboudd View Post
    Well gang, I did it. I bought Steven's 645D ......
    Yes welcome to the somewhat small club. You don't mean kuau's 645D, do you?

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    Re: Fun with the 645D

    Quote Originally Posted by Charles Wood View Post
    I spent this early morning at Snow Canyon State Park, Utah, near my home, with my new 645D. Here is a three frame vertical stitch, 35mm @F19, ISO 100. Some minor tweaks but pretty much how the raw file opened up. I'm not sure what size really works best for uploading but here it is.
    Good one Charles. Looks like a nice place to be.

  29. #179
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    Re: Fun with the 645D

    Moved up to the 645D from D3x about 2 months ago. First time with medium format (albiet crop) and with Pentax, and very happy so far.

    200 FA - Skagit Valley Tulips in Washington


    35 A - Trondheim Norway


    35 A - North Norway


    35 A - Taken from a ship in North Norway (finally got some sunshine)


    35 A - Iceland iceberg on black sand beach


    35 A - Iceland reflection along ring road
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    Re: Fun with the 645D

    Welcome:

    Super first post. I love the iceberg and Trondheim.

    Tom

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    Re: Fun with the 645D

    Welcome Laurence.

    Love the Trondheim shot.
    Impressive series overall.
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    Re: Fun with the 645D

    Love the last image!

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    Re: Fun with the 645D

    Hi Laurence,

    Fantastic 1st post with equally impressive images. Welcome and it's nice to have another 645D shooter amoung us.

    Dave (D&A)

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    Re: Fun with the 645D

    Laurence, those are fantastic, I particularly like the Trondheim one. An area on my wish list to visit one day, funds permitting.
    Odille

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    Re: Fun with the 645D

    A shot with the 67 75mm f2.8 and #2 extension tube; at f/2.8
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    Re: Fun with the 645D

    Tom,

    Love the soft delicate nature of the image...and the colors are vivid yet subtle and soft-like, not overwhelming. A most attractive picture. I haven't worked much with any of the extension tubes but your image certainly makes that prospect inviting.

    Dave (D&A)
    Last edited by D&A; 21st June 2011 at 05:26.

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    Re: Fun with the 645D

    No Pictures to post, but I have a question for the board. I have quite a few 645 A lenses (manual focus), as well as FA lenses. The advantage of the FA versions, is that ACR knows what lens etc was used, and I can apply their built in lens corrections. Wonderful feature. Do you think a firmware update could be issued, that would allow me to manually select a MF lens from a list, so the file would have lens info in it? I could then hand select the lens from ACR for lens correction. I now can do it: if I remember which shots were made with, say, the 75mm A lens, I select in ACR the 75mm FA lens, and it makes the corrections.
    What do you think? Can we "petition" Pentax to do it, if its possible?
    Thanks in advance
    Dave

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    Workshop Member kuau's Avatar
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    Re: Fun with the 645D

    Laurence, fantastic images
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    Re: Fun with the 645D

    Yep it was my 645d
    I may now have sellers remourse. Especially after seeing Laurence first post
    Quote Originally Posted by tsjanik View Post
    Yes welcome to the somewhat small club. You don't mean kuau's 645D, do you?
    Steven Kornreich
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    Re: Fun with the 645D

    Sorry to hear that Steven, we'll miss your posts. I saw your M9 for sale at another forum, so I knew something was up. Good luck with your new system.

    Tom

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    Re: Fun with the 645D

    Thanks Tom.
    Yep I went "all in" with a tech view system..

    Steven
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    Re: Fun with the 645D

    645D with 120 macro, 200 ISO. Liked this one so much I decided to make it the opening page on my web site.
    I am now officially in love with the 645D ... until the D2 comes along.
    Last edited by aboudd; 20th January 2012 at 16:08.
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    Re: Fun with the 645D

    Oh, one more from an assignment. This is three stitched images, shot with the 45-85 (@45MM)

    No Stephen, you can't have the camera back.
    Last edited by aboudd; 20th January 2012 at 16:08.
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    Re: Fun with the 645D

    Quote Originally Posted by aboudd View Post
    645D with 120 macro, 200 ISO. Liked this one so much I decided to make it the opening page on my web site.
    I am now officially in love with the 645D ... until the D2 comes along.
    Wonderful.

    Don't be taking any guff from those that say the 645D is not a "real" MFD camera.

  45. #195
    Workshop Member kuau's Avatar
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    Re: Fun with the 645D

    Aboudd,
    Nice work.
    I new my camera would end up in good hands....
    Still putting together my new system.

    Steven
    Steven Kornreich
    www.kuau.com

  46. #196
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    Re: Fun with the 645D

    Quote Originally Posted by aboudd View Post
    645D with 120 macro, 200 ISO. Liked this one so much I decided to make it the opening page on my web site.
    I am now officially in love with the 645D ... until the D2 comes along.
    Impressive Aboud! Many (including myself) have been singing the praises of the 645D...for it's excellent image quality and most of all, it's performance/price ratio.

    Your first posted image is strikingly unique and I can see how it makes a great home page image. Looking forward to seeing more.

    Dave (D&A)
    Last edited by D&A; 28th June 2011 at 07:40.

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    Hands on fun with the 645D

    Remember how Wilson never showed his face on Home Improvement?
    Last edited by aboudd; 20th January 2012 at 16:07.
    On-line portfolio
    www.abouddweck.com

  48. #198
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    Re: Fun with the 645D

    I received an A 120mm lens this week. Here are some results. The only processing was some contrast changes to the lake image--the others are straight out of the camera.

  49. #199
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    Re: Fun with the 645D

    These are some great posts, as I consider the 645D too. The sensor is the exact same Kodak KAF 40000, as the Hasselblad H4D/40, that I use to own, so I don't know why anyone wouldn't consider the 645D to be a real MFD. The 645 D has a few things I think are essential for MFD, such as weather sealing. Yes, I know I can't switch DB's, but at these great prices one could adapt! Any thoughts to only 50,000 shutter clicks?

  50. #200
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    Re: Fun with the 645D

    Quote Originally Posted by Shashin View Post
    I received an A 120mm lens this week. Here are some results. The only processing was some contrast changes to the lake image--the others are straight out of the camera.
    The Pentax 120 f4 macro, both in MF and Af incarnations is one of Pentax's finest lenses for their 645 system...and no doubt in print, your images Shashin must look lovely...especially some of the flower ones.

    Johnny, yes, the 645D is a very viable MFD alternative, especially for the money. Careful lens selection (including picking out those samples that perform best) will only enhance the already good performace of the camera. The 50,000 shutter click estmate on the shutter doesn't have me worried. As you well know, no one fires these cameras like say a Canon or Nikon DSLR and I believe and hope Pentax will be quite reasonable if ever the shutter needs attention. I think when all things are taken into accont, the camera gives one a lot for their money.

    Dave (D&A)

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