QUOTE(HaN18 @ Sep 8 2014, 01:58 PM)
yok70 albnokSo without modification my picture will look like this? with all the black things on corner?
http://www.imaging-resource.com/news/2014/...ony-lens-mounts Yes, unless... it is an APS-C zoom lens.
Some APS-C zoom lenses can, without removing the rear baffle, work on full-frame, when zoomed to a certain focal length onwards.
The Sony 18-70mm F3.5-5.6 DT for A-mount for example, would work on full-frame when zoomed to around 22mm - quite a nice wide bonus! Same for the Sony 11-18mm F4.5-5.6 DT for A-mount, working at 14mm onwards.
I don't remember exactly for the 18-250mm F3.5-6.3 DT but if I remember correctly, it worked on full-frame from 90mm onwards. Not all zoom lenses can be zoomed to work on full-frame though!
Other nice benefits of using APS-C lenses are the usually closer focusing distance, smaller size of lenses and lighter weight. The Sigma 19/30/60mm F2.8 DN series also works great when their rear baffles are removed - but you should Google to see those images to see if you're okay with the vignetting and softness on the side.