
I also tried the Opteka on the Sony Alpha 550 - this used MF Check Live View. Works great even at 7x zoom (14x zoom is a bit too shaky for a 85mm lens.)

Accuracy even at no zoom using MF Check LV was pretty good!

However, when I tried to use the Quick AF Live View mode, manual-focusing using the LCD, it just seemed to be off all the time. However I could notice a slight sharpening happening in Quick AF Live View mode.

Finally, don't fear the 1 meter minimum focusing distance - you can dismount the lens and turn it the other way around. You can even control the aperture using the aperture ring!

It gives about 70mm for a 36mm-wide sensor, or 1:1.94x maximum magnification.
In other news, there might be a Samyang 35mm F1.4:
http://www.lenstip.com/index.php?art=122
I would buy that no questions asked! Knowing the obscene quality of the Samyang 85mm F1.4 you can bet the 35mm is going to be a winner. Since it is a full-frame wide-angle it should have a better MFD than the Sigma 30mm F1.4's mediocre 40cm. (The Sigma looks nice on FF despite the vignetting!)
Jan 1 2010, 05:54 AM
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