dougpeterson
Workshop Member
It's not just you: there are some definite artifacts in the images posted. I note aliasing problems in the hair, low-frequency-low-magnitude color noise, and some smearing of certain details.I'm not sure what I'm seeing, but I see something. While there is plenty of pixels here for sure, the first shot has some blurring of fine details like the leaves. I also see luminance speckling in the first shot, in Lance's hair and forehead (mostly light specs), and in the texture of the truck grill (mostly dark specs). Not sure if this is due to its pre-production status or just bad JPG compression for web, but I saw it on my laptop screen this morning, then even clearer on my Eizo at work.
I wonder on the first shot if the 80mm lens just isn't suited for infinity performance, as the close-up detail of Lance is much better.
Something interesting came to mind when pondering what I'm looking at, as the files don't have the same sparkle and per-pixel crispness as Guy's P25+ (or even the ZD). Is it possible that the Mamiya MF lenses aren't really able to resolve what the sensor is? MF format lenses typically haven't had to resolve as much detail (lp/mm) as smaller format lenses because the surface area is so much larger and the net result was a greater amount of overall information in the scene and less enlargement required for a print. Now that the P65+ has pixels the same size as 35mm DSLRs, perhaps the lenses aren't really up to the task. Or maybe you just have to be very critical in selecting the right lenses to work with this back.
Maybe I'm the only one who sees this, maybe not.
I'll be very curios to see side-by-side, same lens, same settings shots from P25+, P45+, and the new P65+.
Thanks,
David
Pre-production firmware and preliminary-only support for the P65+ in the current public release of Capture One 4.5.2 are likely responsible for almost all of it.
We saw the same thing in pre-production releases of the P45+. Anyone who has been involved in the release of such a product knows that there are trees of development, and the most recent branch is never available for testers outside of the company because they almost always have embarrassing errors. Internal development goes like this: fix/improve A and B and cause problem C. Then fix problem C and release to testers. While that is being tested problems D and E have already been fixed or improved but in doing so have caused problem F which make it unsuitable for public testing.
All of that is by way of saying these problems are likely already fixed on a version in DK, but not in the stable version shipped to Jack and Guy which is probably a month or two out of date since they only stop to make "stable" versions every once in a while (it doesn't make sense to stop development and squash bugs while you're doing internal development).
I'll put up 100 shares of GM that says all of these issue are gone in the shipping version. O wait, I'll put up $20 instead; that's likely to be more valuable by P65+ release time.
As for the Mamiya glass, I expect the best lenses to hold well beyond the P65+. The 80mm, 120mm, 150mm and likely the new 45mm are very sharp. The 28mm will lack somewhat in the corners but that's the price of any lens that wide on an SLR. Older Mamiya glass is probably going to lack a bit but if you're springing for a P65+ then you're going to be a good candidate financially for the newer first rate glass and/or a technical camera with large format simple-lens (non retro focus) designed schneider/rodenstock glass. And we've always suggested the older Mamiya glass as a good way to expand your range of lenses at very little cost, not as a way to get your primary lens/lenses cheap.
Doug Peterson, Head of Technical Services
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