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I said, "most of the rest of the form is constrained by physics and ergonomics," and that still seems true? At a minimum, if digital camera construction has sub

I said, "most of the rest of the form is constrained by physics and ergonomics," and that still seems true? At a minimum, if digital camera construction has substantially changed the constraints on lenses, this fact has not led to a significant change in their overall form, to the best of my knowledge. If digital sensors substantially changed the physical possibilities, then perhaps it is ergonomics preventing them from changing.

astrange 5y ago
You can see a comparison at the top here: https://www.kenrockwell.com/tech/rangefinder-vs-slr.htm https://www.kenrockwell.com/tech/rangefinder-vs-slr.htm Sony sells wide angle "pancake" lenses that beat the ones for SLRs at compactness: https://www.backscatter.com/Sony-E-20mm-f-2.8-Pancake-Lens https://www.backscatter.com/Sony-E-20mm-f-2.8-Pancake-Lens https://www.bhphotovideo.com/c/product/12082-USA/Canon_2509A003_Super_Wide_Angle_EF.html https://www.bhphotovideo.com/c/product/12082-USA/Canon_2509A... Though there's some small SLR lenses too, I think they distort more or it takes longer to figure out the optics - not an expert there.
- asdfasgasdgasdg 5y ago
  Ken is mistaken about the size comparison, at least between that Leica and the Canon lens. The Canon is a wide zoom. Zooms with autofocus are of course going to be much larger than a manual focus, slow 21mm prime. (That prime is 3x as expensive, two stops slower, and lacking an autofocus motor compared to Sony's similar offering: https://www.bhphotovideo.com/c/product/1126141-REG/sony_sel075uwc_21mm_ultra_wide_converter_for.html https://www.bhphotovideo.com/c/product/1126141-REG/sony_sel0....) I will also note that pancake lenses have been around since the sixties and I believe that there were pancake lenses compatible with DSLR lens mounts. Suffice it to say I'm not sure I can say I am convinced DSLR optics are disadvantageous vs. mirrorless optics. I wish Ken would cite some sources because on Google his claim is the first and only relevant one document that turns up for a few pages.

astrange 5y ago

You can see a comparison at the top here: https://www.kenrockwell.com/tech/rangefinder-vs-slr.htm https://www.kenrockwell.com/tech/rangefinder-vs-slr.htm Sony sells wide angle "pancake" lenses that beat the ones for SLRs at compactness: https://www.backscatter.com/Sony-E-20mm-f-2.8-Pancake-Lens https://www.backscatter.com/Sony-E-20mm-f-2.8-Pancake-Lens https://www.bhphotovideo.com/c/product/12082-USA/Canon_2509A003_Super_Wide_Angle_EF.html https://www.bhphotovideo.com/c/product/12082-USA/Canon_2509A... Though there's some small SLR lenses too, I think they distort more or it takes longer to figure out the optics - not an expert there.

asdfasgasdgasdg 5y ago
Ken is mistaken about the size comparison, at least between that Leica and the Canon lens. The Canon is a wide zoom. Zooms with autofocus are of course going to be much larger than a manual focus, slow 21mm prime. (That prime is 3x as expensive, two stops slower, and lacking an autofocus motor compared to Sony's similar offering: https://www.bhphotovideo.com/c/product/1126141-REG/sony_sel075uwc_21mm_ultra_wide_converter_for.html https://www.bhphotovideo.com/c/product/1126141-REG/sony_sel0....) I will also note that pancake lenses have been around since the sixties and I believe that there were pancake lenses compatible with DSLR lens mounts. Suffice it to say I'm not sure I can say I am convinced DSLR optics are disadvantageous vs. mirrorless optics. I wish Ken would cite some sources because on Google his claim is the first and only relevant one document that turns up for a few pages.