ProfHankD

the_chris: Anti-Newton glass is really etched diffusers. I've tried them (many years ago). They slightly degrade resolution and contrast, but they sort-of work. A piece big enough for that scanner...

iso rivolta: Oil is the answer I know, but I don't want my film oiled. ;-)

Newton's rings ( https://en.wikipedia.org/wiki/Newton%27s_rings ) are a HUGE problem with this type of scanner -- or any glass-mounted slide or negative. Many color films in particular do not...

Well, sort-of. Old manual lenses often deliver higher resolution, but at at lower contrast. There are lots of performance metrics, and high microcontrast is one often targeted for optimization ...

The Vivitars are really not bad but also not great... except on extension tubes or bellows. There are Minolta MD 2.8 and 3.5 that are very good, and really many others, but the RE Topcor 135mm ...

I'd still be thinking in terms of heat/cooling to break the bond. At least there's probably not any loctite in there. ;-) BTW, it is easy to 3D print a thin gripping collar of any precise size. It ...

The winning shot is excellent, but rather typical of what people hope to do with long lenses. On that, congrats to the #2 entry for being less typical.

Lots of options, including flat black paint of any kind. Black 2.0 is really good and water clean-up. Black 3.0 is blacker still, but more fragile... and that's the problem with most very black ...

Effective focal length of shot; zooms are fine.

I suppose it would go well with the $99 B&W video projectors I bought in the mid 1990s. There were 16 gray levels, 640x480, and they were dimmer than dim:...

Congrats to Phantogram -- that's exactly the kind of thing I had in mind.

Entropy512: By definition, a "coded aperture" is an aperture, and only some type of optic has an aperture.

Prof. Allebach was doing his diffractive optics work in the early 1990s. The catch is...

Actually, no; this isn't shaping the OOF PSF of a lens. This is a digital diffractive optic, such as my colleague, Jan Allebach (...

Well, 33mm isn't quite 36mm, so you'd still need to rotate for portrait, but you'd be able to, for example, get square or 16x9 images with the full angular coverage of FF....

Interesting, but looks like yet-another 44x33mm... more multi-aspect FF than MF, really. Like the Fuji. Not that it would be a bad thing. Sony's been making those sensors for a while, so they're...

The full algorithm has been openly published. The C code has always been intended to be open source, but the use of ADC makes a simple-install distribution impossible. The new KEMY uses the same ...

Right now it's still a WWW form interface linked at http://aggregate.org/DIT/KREMY/ The problem is that it uses Adobe DNG Converter, so it's a mess to install. The tool itself is actually pretty ...

That happens. Case linings can decay in a variety of terrible ways.... I don't think there's any easy out. I'd start with a vacuum to get what's loose and then it's careful work with Q-tips and ...

I don't recall if I tried that or not. However, remember that the real test is extreme high ISO images -- many tools do great with modest noise levels. The problem is that most image training sets ...

takepictures21: That is better than expected. I wonder why they don't show them at the link DPReview gave:...