| Latest Review Posted | Carl Zeiss Flektogon MC 20mm F2.8
I use only vintage analog lenses, and this is one of them I've been using for several years. It is the Zebra version that fits a 77mm thread that I stepped-up to 86mm to avoid vignetting when using on a shift adapter.
In FF simulation, using a ZhongYi Turbo II focal reducer booster on an APS-C camera, the edges show soft all the way up to f/22. Center area is sharp from f/8.
In APS-C modus, using a Fotodiox Shift adapter, the edges show soft up to f/11-f/16, which is very disappointing. Center area is sharpest at f/11. Corners show sharp at f/22 but then the center softens. The sweet point is f/11.
Rendering of color and contrast is really punchy and warm.
Compared some Flekt basics to my Asahi Pentax Takumar 17/4:
1) Flekt needs f/11-f/16 to match Tak f/8 in sharpness
2) Flekt needs about 25% longer exposure than Tak at same f stop
3) Flekt is rectilinear, but Tak is fisheye
Compared some Flekt basics to my Zenitar 16/2.8:
1) Flekt needs f/16 to match Zen f/6.3 in sharpness
2) Flekt needs about 50% longer exposure than Zen at same f stop
3) Flekt is rectilinear, but Zen is very fisheye
My Flekt got completely overhauled and is 100% clear and clean. I tried to sell my Flekt on ebay, but to no avail. So I decided to keep it on the Fotodiox Shift adapter as a cheap alternative to the expensive Canon FD 35 TS. No comparison of course, as that Canon is much sharper than the Flekt.
Anyway, throughout the past years I've been shooting with this lens a... |
