Is there a 1.2 alpha lens?

Started Mar 3, 2013 | Discussions thread
kurja
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Re: Is there a 1.2 alpha lens?
In reply to jeffcpix, Mar 6, 2013

jeffcpix wrote:


I can see how a wide angle lens might be problematic -- what I don't understand is why the speed of a lens makes the light rays more oblique and less likely to 'go down the well' -- since it's probably a retrofocus design, isn't the 'oblique-ness' of the light rays restricted by the depth of the camera from lens mount to sensor/film?

I would suppose the more out of focus a ray is, the more oblique it's angle to the sensor would be - and with F1.2 or the like, the out of focus areas are very out of focus. Perhaps someone more knowledgeable could clarify this?

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