Would a SIGMA 150-500MM 1:5-6.3 APO OPTICAL STABILZER fit a Sony Alpha a68?

[Stua27]

Hi 

I'm looking to buy a 500mm lense for wildlife photography, so I was wondering if a SIGMA 150-500MM 1:5-6.3 APO OPTICAL STABILZER would fit my a68? There isn't alot of information online on this and trying to find a store with Sony equipment is hard. 

Thanks 

[thebeardedgroundsman]

Hi, 

This lens is available for Sony A mount and so it would fit your a68.

As the a68 is cropped sensor all the a mount lenses will fit (Full frame cameras need to watch out as some A mount lenses will    have heavy vignetting where the edge of the lens shows in the photo - however, this is mainly in wide angle lenses, I've yet to find it in a telephoto lens.

Here's a link to a review of the lens from a good camera shop in Britain, who I have found very good for used equipment.

https://www.wexphotovideo.com/blog/reviews/sigma-150-500mm-f5-63-dg-os-hsm-lens-review/

 

[XKAES]

Super-wide, full-frame lenses will only have "heavy vignetting" -- AKA, light fall-off -- if they are not retro-focus lenses.  All of these require a mirror lock-up to use -- such as Minolta's first two 21mm lenses. 

Those that have a retro-focus design -- like Minolta's later 21mm and 20mm lenses -- largely avoid light fall-off, and it is typically eliminated by stopping down a couple of f-stops.