It's a bird

by Vian Esterhuizen

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No. There are several problems here. This lens looks a lot like the Senko 50mm f/0.95, i.e., it is a C-mount lens for 1" format video. This lens vignettes even on micro four-thirds (2x crop). There's no way the image circle will cover an APS-C or full-frame camera, and the registration distance is much much smaller than that of Nikon F. In order to get the ...


No, because the register (distance from the mounting flange of the lens to the sensor plane) is quite short.


With larger mount you can have larger exit pupil diameters. Ratio of entrance pupil and exit pupil is a measure for a lens symmetry. So with larger mount I suppose you can achieve more symmetric designs. The level of asymmetry affects among else depth of field (at given focal length, distance and aperture) and depth of focus. The look of out of focus ...


The mount's throat diameter limits the exit pupil diameter. It also has strong control over vignetting, so it restricts the pursuit of ultra-large aperture lenses with acceptable light falloff.

0 I'm waiting for more news on the adapter shown in the link above. I really don't want to sell all my Nikon glass but I do want to change to mirrorless. All rights, credit and thanks to Sony Alpha Rumors for getting the information about this adapter out to the ...


The problem you are experiencing is due to the way third party lens makers usually design their lenses to be compatible with cameras made by someone else: they reverse engineer them to work on the existing offerings of the camera maker at the time they design the lens. If the manufacturer later updates their system the original manufacturers have access to ...


Very briefly, lenses are generally only compatible with one particular mount, so if you want a lens for a Minolta Maxxum 5D, then you need to buy an A-mount lens, which is the name of the mount used on that camera. Minolta developed the A-mount for their interchangeable-lens autofocus cameras, and Sony also uses the A-mount. (Be aware though that Sony also ...


Vivitar is a third-party lens maker that can make a lens in a variety of camera mounts, so there's no way anyone can answer your question without being able to see the specific lens you're talking about. I'd suggest looking through a visual guide to lens mounts to see if the Vivitar uses the mount for the Minolta AF or Sony A-mount systems (the mount the ...


It looks to me like the turning action of the focus ring (from infinity to close) causes the gold coloured inner ring to move forwards with the lens arrangement. As can be seen in the link provided by 2012rcampion in a comment: closest focusing distance infinity: Looking now at the diagram this allows the small arm which pushes on the back of this to ...

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