Friend of mine is willing to sell his 50mm f1.0L very cheap as he is moving to Nikon.
Price is very reasonable consireding used ones go around $5000 on Ebay.
Only problem is there is a dust. Not much actually one single flake on one of the elements inside. It is about 1 cm from the side, since it is a HUGE glass that dust flake is strikingly visible when you look at it.
I can not see anything from the viewfinder, and I did couple of test shots with 5D and did not see any dust or flake reflected on my images.
He gave me the lens for a week to evaluate before buying, is there any circumstances I can try to reflect that dust/flake on the image? Such as wide open? Shoot at f11 or higher? Shoot a sky? White paper? etc?
I just want to see if it will be visible in some conditions and if it is that will possible lower the selling price