ProfHankD

Truth is it really depends on what attributes you're looking for. Different brands tended to favor different metrics. For example, Minolta used the fact that they made their own glass to be ...

For the lens, there *might* be a fairly easy fix. Usually, such contacts are on a printed circuit board, but I don't think these are. They look like actual metal set into a plastic part. If so, you ...

Well, I'm not affiliated with Imatest nor pricy to their customer list, but I know a lot of manufacturers are indeed using it for testing of their camera+optics products. Actually, they'd be ...

A very strange way of taking this, because lenses and sensor IQ at different ISOs vary, but sort-of yes. You'll probably get higher effective total resolution on, for example, a 24MP FF out of ...

Well, that's a pretty serious misunderstanding of how this works.... First off, smaller pixels make resolution, CA, etc. issues worse, and the truth is that most old FF lenses can't do much better ...

Class A: Discussed many times before... but the biggies involve dumb A+B,B encoding of channels with exposure set by B so it clips and AA filter corrupts stereo separation.

migus: I don't really know what the right answer will be, but Canon's dual pixel has a variety of issues that other forms of plenoptic sensing (which is what dual pixel is a wimpy version of) don't...

Almost any old "fast fifty" is a viable choice -- and you certainly can't go wrong spending $10 on a Minolta MC Rokkor 50mm f/1.7. However, the bokeh from the M42 Takumars is really outstanding. ...

I'm honestly shocked. The whole thing looked like somebody's first attempt at shooting log video and grading it later. Put another way, is this a video camera company with nobody who has any...

I did -- back in 2015.  Did more than a little postprocessing of the data from it too.... Fully agree with this. You folks don't seem to have gotten my original point here, which was that even the ...

migus: Canon's dual pixels in the 5DIV are not a superior solution to the main-sensor-PD problem... they just have different problems. A segmented-pixel approach may well be the eventual winner,...

Once again, Tom, just because you don't like it doesn't mean it is a poor design . For example, I'd take the ergonomics of any of my Sonys over my GX850. The GX850 is fairly feature-laden, but ...

Not to be cute, but that's worked with CHDK for nearly a decade. I have fleets of PowerShots that I use that way, from $70 20MP ELPH180 to $130 16MP 50x Zoom SX530HS, with various ...

I don't see it as better -- it's too limited. Imatest gives a lot more data even for MTF measurements; MTF50 was about all one got from MTF Mapper in 2015 (when the paper was written). Still, we ...

There is a basic truth in that a fixed lppmm lens resolution gives more total detail when sampled over a larger area, but focal reducers and teleconverters used as coverage enlargers change that . ...

I'm willing to believe my FDn was just a terrible copy, but my silvernose renders quite a bit differently from either FDn without showing any signs of badness... very strange. They are certainly ...

Yup; very much so for my FDn 50mm f/1.4 vs one a student of mine had. My "silvernose" FD 50mm f/1.4 is somewhere in that huge gap between the two, but really doesn't behave like it has the same ...

For what it's worth, I've gotten to know the folks at Imatest pretty well from chatting with them at the Electronic Imaging conferences. For some of the work I was publishing at EI, I was ...

I can't imagine the f/1.4 is sharper, unless you mean @ f/1.4 vs. f/1.2. Of course, slower lenses are always cheaper... but I disagree about which is the better buy. The FL 58mm f/1.2 was ...

I agree. This old Minolta is something special... although it's a little too special at f/1.2: the rendering is a little too distinctive to shoot lots of shots wide open. The really exceptional ...