Lenses for a camera I am awaiting for and a budget that closes soon

[Barry Bishop]

I have a budget that closes next monday (work in corporate world, use it or lose it). I have to buy lenses and I was wondering if these lenses would vignette at 5k or 4k? I understand that the crop factor will make the images now 35mm to 50mm (or something of the sorts). Any ideas?

http://www.amazon.com/Zeiss-Distago...1?s=electronics&ie=UTF8&qid=1322526053&sr=1-1

http://www.amazon.com/Zeiss-Distago...r_1_20?s=photo&ie=UTF8&qid=1322526172&sr=1-20

Im going into this somewhat blind...

 

[Nathaniel Haban]

They are designed for full-frame sensors, so they shouldn't vignette at 5k or 4k. The crop factor is going to be 1.4x, so essentially you're looking at: 18mm = 25mm , 35mm = 49mm.