Richard Schumer

@cdembrey: I probably should have written it differently; I didn't mean only skilled as in well-educated, I mean skilled in the minuscule, repetitive work of polishing and assembling optics; I...

Just because this makes no sense to me doesn't mean it makes no sense to someone else, but I have basic questions which have no answers. In no particular order:

Why "copy" a Leica SL? This is a...

@padam -- Here's a shot taken some time ago with a Pentas *ist DS with that 50mm f:1.4 lens *wide...

"The great genius of American industry is to make things cheaper and charge more for them"
--Henry Ford.

When (tetraethyl) lead was introduced in gasoline, companies charged a nickel more per...

@padam -- Nice photos! Pan-plus gives great tonality, too. My short use of the lens, as I said, was primarily wide open and with Tri-X developed in Microdol or Ethol UFG,, a very different...

@ padam -- Our mileage varies. Looking back, those were the days of "available light" photography with the introduction of Tri-X film, so my experience with that lens was mostly wide open, IIRC. ...

I actually had a Carl Zeiss Jena Biotar 58mm f:2.0 lens I bought new circa 1958 mounted on a Pentacon body. The camera was an eye-opener (the first permanent pentaprism SLR) but the lens sucked so...

@Cameracist What? Is DPR part of the anti-Russia/Trump Fake News conspiracy?

Is a kickstarter-like funding drive in Roubles involved? Cause when I enhanced the photo above in GiMP, it appears the lens is a 35mm (visible on the rim) of obviously retrofocus design; the...

Part Two:

The missing element in all this is being able to see one's image as others would see it. The photographer knows and remembers his relationship with the subject; the viewer has no such...

(Posted in Error)

The first rule of compsition I learned was that if a picture of a person hasn't enough "headroom," it makes the person seem too tall. I was about ten years old. Some years later, shooting sports,...

Those elements are now even more aspherical than before. ;o}

Too bad, though.

Say, does anyone know the refractive index of Super Glue?

Bah! This "news" is by and for the legal departments; expect big patent battles or cross-brand patent exchanges in future. Curved sensors are great in theory.

The problem is that, in theory,...

It's likely Canon's sensor design and fab teams aren't up to the technological challenges presented by Sony's teams; I doubt Canon is so cynical as to try to cheat past and prospective...

Well, I think you're over your head with the comment about Formula-1. I have driven a Ralt Formula 1 chassis from circa 1975 (with a hot rotary motor) and it is quite as easy to drive as any Honda...

It probably is -- the main benefit of the short flange distance on the mirrorless body is in wide and extra-wide lenses. That short back distance makes for smaller, simpler designs than more...

You will almost certainly say two words, one of which is "Oh!"

"There are only 95 of the ‘Edition 0.95’ lenses worldwide, which have unpainted engravings...."

One wouldn't want to lead the eye away from the fine finish with gaudy, attention-grabbing operating...

Placed 27^th in the challenge. San Francisco, CA, 16th St. BART SW plaza