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02-08-2011, 02:03 PM   #1
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645D and image quality

I recently bought the 645D (body only) and use it with an adapter and my 67 lenses. Today I used the 100mm Macro and am BLOWN AWAY by the stunning detail and sharpness I get, even at ISO 800 (I haven't gone higher, yet). The 45mm works fine, too, as does the 75mm (both newest versions). I have not tried out the 55-100 zoom, the 105mm or the 165mm/2.8, yet.
What I HAVE tried out is the 165mm LS but it doesn't work, even not with a hot shoe LS adapter I recently bought. Can anyone tell why?

I'll continue using my P67II for landscape b&w photography but I'll sure use the 645D for everything else.

02-09-2011, 03:08 AM   #2
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Could you post some of the pictures you have taken?
02-09-2011, 05:48 AM   #3
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It was a job so I can't post full-sized pics. Here is small version of the original and a crop at 100%. Taken from RAW (PEF) with ACR, no extra sharpening or contrast. I just brightened it a bit. ISO 200, aperture 16, 1/30, I think. Free hand.
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Last edited by phonoline; 02-09-2011 at 05:53 AM.
02-09-2011, 11:30 PM   #4
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QuoteOriginally posted by phonoline Quote
It was a job so I can't post full-sized pics. Here is small version of the original and a crop at 100%. Taken from RAW (PEF) with ACR, no extra sharpening or contrast. I just brightened it a bit. ISO 200, aperture 16, 1/30, I think. Free hand.
Thanks Phonoline.

02-13-2011, 09:52 PM   #5
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I wish I could see a comparison of the same shot taken with K5, same settings, and same crop..Looks like it catures a lot of detail though.
02-14-2011, 07:32 AM   #6
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Well, we are talking about 40MP here and medium format. The 100mm macro 67 lens is tack sharp. I have NEVER seen such high resolution except when I once used the new 645 Mamiya with 33MP and great lenses.
The K5 will not come close. Not even the Nikon D3x can come close.
02-14-2011, 01:17 PM   #7
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Have you tested the 67 165/2.8 yet? I'm curious to see how it performs.
02-15-2011, 07:32 AM   #8
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I've tried it out but have yet to view the pictures on my computer. My first impressum was that it isn't that well-performing but the 645D screen is a little irritating sometimes when it comes to sharpness. I'll let you know as soon I have found some time.

02-15-2011, 04:01 PM   #9
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I have tried my 6x7 165mm f2.8 on the 645D and also have not been totally convinced by its resolution. I always liked it on my 67ii, but just seems lack lustre. I haven't done controlled testing - just a subjective impression.
02-15-2011, 07:49 PM   #10
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That's the same impression I get using it with the 67. The late model 200/4 should be worth a try though.
02-20-2011, 04:14 PM   #11
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Lloyd Chambers has tested a few 67 lenses on the 645D. The results I am getting from my own test chart and outdoor shooting tally with his:

-the 45mm is decent but not great
-the 55mm is excellent; I would add that the 55-100 zoom is equal or better at 55mm
-the 300mm EDIF is excellent


I have done direct comparisions to 67II shots using Agfa APX 25 and Rollei ATP 1.1 (same time, same lighting, same position, same lens, etc) and I have found that large prints from the 645D are superior in terms of sharpness, resolution and detail. I have included one example for reference, comparing ATP 1.1 (scanned on my Nikon 9000ED) with the 645D.

-materialsguy
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02-20-2011, 05:09 PM   #12
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This result is surprising to me as ATP is a remarkable film. I wonder if the result would be the same if the ATP neg was drum scanned on an Aztec premier.
02-20-2011, 06:15 PM   #13
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But this is just the point: for MY processes, the 645D IQ is demonstrably superior to what I have been doing with MF film (and I love working with film). Now if we start talking about pixel shift enhancement, focus stacking, exposure blending and HDR....

My intent was not to go down the film vs digital road yet again. I just want to go out and capture images.
02-20-2011, 06:47 PM   #14
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Nor was it my intent to dredge up the film vs digital debate. But I suspect a lot us still primarily using film are looking at the 645D as the tipping point. The fact that the 645D can beat Rollei ATP, which is the sharpest, finest grain film I've ever used is impressive.
I know the Nikon 9000 is capable of top notch scans, but i can't help but wonder how an 8000 DPI drum scan would compare.
02-20-2011, 10:16 PM   #15
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Film or Digital IQ aside it would be interesting to see the full uncropped 67 frame as well to compare with the 645D full frame in terms of coverage angle to judge the relative impact on an overall print. My point being that a 67 w/55mm's equivalent on the 645D is roughly a 35mm, and conversely the 645D w/55mm's equivalent would be roughly a 90mm on the 67. (??)

Last edited by VoltMan; 02-20-2011 at 10:49 PM.
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