Joseph S Wisniewski

You might look into the original Canon 50mm f1.2 EF. An oldie but a...

I'm sure it was patent protected, a few decades back, and long expired.

@bmwzimmer It's Canon: the EF lenses already have aperture and focus motors. If the message set for the R lenses is a superset of the EF lenses, then all you need is basically a dumb extension...

@lacikuss "Just buy into M43, physics will always limit a FF system with extraordinary lenses."

It's the other way around. There's nothing M43 that can match the shallow DOF of the new 58mm f0.95...

The APS and 4/3 fast zooms are essentially FF designs with a speed-increasing "wide converter" rear end (like a Metabones adapter). That's why they have basically the weight and width of their FF...

@lancet it's unknown whether the new cameras have defeatable UV/IR blockers. If you want the best performance from a mirrorless, you integrate that filtration into the sensor cover glass, so you'd...

@Ed Ingold, the effect was negligible on telephotos. That's why they came with both glass and gel filter holders. Gelatin filters were thinner (and had a lower index of refraction) so the effect on...

I'd like more options with the crop feature. Some lenses, especially longer ones, have good coverage past APS-C, and lenses without internal baffles can do APS-C vertical or horizontal crops within...

@Grive You beat me to it. That's basically what I was going to say.

Or I'd put it at the end of "the stack" that I usually carry: 1.4x TC, 2x TC, 8, 12, 20, 36mm extension tubes...

RedFox88 "Lol, guess you’re not an engineer!"

I am an engineer. But it doesn't take an engineer to see that this is possible, because...

Nikon did it in their F to Z mount adapter.

kreislauf: so you want more features for less money? makes total sense.

Well, you are stripping out the mirror, along with its motion compensation system, and the heavy glass pentaprism....

Do you own polarizing sunglasses? Probably not, because modern tempered "safety glass" use in cars kinda put the kibosh on it. I have polarized Serengeti driving glasses, and they cause the whole...

The third effect has nothing to do with the optical path behind the lens and everything to do with the lens itself.

When using front polarizers, you have the optics stacked in the following order:...

The second effect is major: the glass behind the rear element will increase spherical aberration of fast lenses: they will become softer wide open. This is why the fastest lenses of all, high...

Well, Jeff, you're close...

"Any EF lens can take advantage of the drop-in filter, with no size cost - that we could tell - compared to the standard adapter."

The drop in filter will have three...

Gone, and soon to be forgotten.

My own forecasts showed lightfield imaging not really being viable for such a long timeframe that I don't have to worry about it.

@webrunner5, the lens array only needed very low resolution. It was something that could be stamped quickly.

What killed Lytro was the insane data overhead. They lowered their decimation ratio so...

They just passed $1,000,000.

They're at 10x their funding goal, with 34 days to go.

Yashica hasn't been a "Japanese Camera Brand" in quite some time. Kyocera sold the name to a Hong Kong product distribution and "brand management" company called "The Jebsen Group". In addition...

Except that Minolta used them to actually add data. This just "sets the controls" that they didn't want to build onto the camera.

A retro ISO control would have been fine. ;)