ProfHankD

I see some of the usual branching, but most of that doesn't look so much like fungus as dried liquid that infiltrated. I wonder if somebody else tried to use flooding with some solvent to clean this? ...

It's interesting... they do say 46x46mm in various places, but that doesn't match the overlap measurements I made on the actual images shown (which is how I got my 41x41mm numbers above). It looks...

Thanks. It was sort-of "done" when the paper went to Electronic Imaging, but it seems a lot more broadly useful, so that's how it's evolving now. Lafodis160 is still being tweaked to be easier for ...

"any digital medium format cameras that capture a 6x6 cm image?"

Yes -- and much larger: http://largesense.com/ . If a (very slow) scanning camera will do, then my sub-$50 Lafodis160 (see...

Circular variant of many rectangular shift-and-stitch adapters to the back of large-form bodies... sort-of the degenerate case of what my Lafodis160 does with an ESP32-CAM and polar-coordinate...

Well, who cares? You ARE returning the lens, right? Honestly, separation usually doesn't look like bubbles. It usually looks more like: Element separation on the left side That's basically a very ...

Not cheap, but the 60mm f/2.8 macro seems competitive with things like the Laowa 60mm f/2.8 (which goes to 2:1, but is only FF in the macro range).... and given that the Laowa lens was quickly...

Placing a 1" sensor in a phone isn't the hard part -- getting a decent lens on it is. My guess would be the wide lens is because it was easier to make thin. The catch is, that's going to have rays...

Had he used any of the Panorama Tools derived free software, he would have gotten high-quality blending for free.... For what it's worth, that's not what we're try to do with Lafodis160. The ...

Not a bad variant of the older multi-shot shift-and-stitch schemes, but this is limited to slightly less than 48x48mm square. Kind-of a degenerate version of my Lafodis160 , which moves a tiny ...

Spots could be anything that deposits, including fungus or haze. Spots in a branching pattern are surely fungus. Usually, the things that can't be cleaned are either: (1) Fungus that's been there long ...

The lookup table is literally the image of the PSF... well, give or take that thing about needing negative values too.  ;-) It is so much easier than the "old way" using dichroic mirrors... as in ...

Thanks largely to Trump, the USA suffered a long period of many people not dealing with COVID19 appropriately... which honestly is still a problem in the form of a significant number of people...

Halftrack: Sony gets a lot of hate for their UI, but it mostly just follows Minolta rather than Nikon or Canon... and I always liked Minoltas -- each of us is allowed to have our preferences. The...

Parallax is not easily compensated for close focus, and the rangefinder also fails for essentially the same reason. A shorter focus throw does tend to reduce lens size, but I don't think that was ...

Sometimes, people will use crazy glue to permanently attach such an adapter. (I've had a couple like that via eBay.) If so, simply use thermal stress to break the bond. Stick the lens in a cool ...

marc petzold: Like I said, I don't care for AF lenses... that's just there because I see $200 as ok just to have a backup if you can't manual focus. Don't like it? Get a new A7RII body for $1298...

It has only been "a thing" since I started pushing the idea at Electronic Imaging about a decade ago. I will say that, for example, the idea was very well received by folks like the founder of ...

To be clear, only most of the lenses are used (and no longer available new). The body is brand new -- just not Sony's newest model -- and the Laowa and Opteka lenses and various adapters are all new.

A guess, but that sounds like one is the aperture iris and the other (the square one) is the shutter. Some USSR lenses did that too. The bokeh will look like the aperture.