[quote name='Alexander ' date='19 July 2010 - 07:24 PM' timestamp='1279560264' post='1129']
I checked with foto-tip.pl, they say the Pentax-version, as with my Samyang 85mm 1.4, has automatic aperture (the A-setting on the aperture ring). [color="#0000ff"]Maybe it's because of the pin that sticks out and controls the aperture on K-mount lenses, no electronics needed maybe?
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I'll be buying this lens when it gets dark at night here and I again can see the stars <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/smile.gif' class='bbc_emoticon' alt='
' />
[/quote]
Exactly, mechanical coupling.
I am not sure whether it will therefore work well with the camera when it comes to metering. Something worthwhile investigating, however, because that would make life a lot easier already.
As Klaus says, however, you may find it not wide enough on APS-C.
Kind regards, Wim
I checked with foto-tip.pl, they say the Pentax-version, as with my Samyang 85mm 1.4, has automatic aperture (the A-setting on the aperture ring). [color="#0000ff"]Maybe it's because of the pin that sticks out and controls the aperture on K-mount lenses, no electronics needed maybe?
[/color]
I'll be buying this lens when it gets dark at night here and I again can see the stars <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/smile.gif' class='bbc_emoticon' alt='
' />[/quote]
Exactly, mechanical coupling.
I am not sure whether it will therefore work well with the camera when it comes to metering. Something worthwhile investigating, however, because that would make life a lot easier already.
As Klaus says, however, you may find it not wide enough on APS-C.
Kind regards, Wim
Gear: Canon EOS R with 3 primes and 2 zooms, 4 EF-R adapters, Canon EOS 5 (analog), 9 Canon EF primes, a lone Canon EF zoom, 2 extenders, 2 converters, tubes; Olympus OM-D 1 Mk II & Pen F with 12 primes, 6 zooms, and 3 Metabones EF-MFT adapters ....