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Latest Review Posted SMC Pentax-M 35mm F2.8
Prices of 35mm lenses have blown up over the last few years, so I was super enthused when I found this one in good condition for just over $100.

Wide open shows the worst of this lenses performance, there's coma at the edges/corners and spherical aberrations that rob the image of contrast and resolution. However once you close the aperture to f/4 the image improves dramatically - spherical aberrations disappear, coma is noticeably reduced, and there's TONS of contrast and good resolution. At f/8 the image is really sharp across the entire frame.

Compared to the older f/3.5 35mm lenses, this M version has better edge/corner sharpness, better flare resistance, slightly lower chromatic aberrations, and an extra 2/3 EV of brightness at max aperture. The only area where the older 35mm outperforms this one is wide-open performance at f/3.5 - no spherical aberrations and super sharp/contrasty in the center, however if you stop the M lens down to f/4 it outperforms the older versions in the mid-frame and edges. This f/2.8 version has warmer tones similar to the f/3.5 35mm SMC Takumar lens. I personally prefer this f/2.8 version over the f/3.5 versions.

My copy has a very tiny amount of haze under the front element, but it's only visible when shining light through the back - something that will never happen in real-world use.

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