If you are going to get a full frame L lens for a crop camera get one of the 24-x lenses, and then buy a Ef-s Ultra wide. 24-x is fine for an outdoor zoom in wide open places. Save buying the ultra-wide full frame lens for when you buy a full frame camera.
That makes sense, and incidentally is exactly what I did when I decided to buy glass to prepare for the move to full frame later on. I had the Tokina 12-24 f/4 DX at the time, a bombproof piece of kit that was!
« Last Edit: January 26, 2014, 04:12:58 PM by mrsfotografie »
5D3, 5D2, Sony α6000, G16 | EF: SY14/2.8, V20/3.5, 24/2.8, 35/2, Ʃ35/1.4, 50/1.8, Ʃ50/1.4 EX, 100L Macro, 17-40L, 24-105L, 70-200/2.8L IS II, 1.4x II, 2.0x III, 70-300L, T28-300 Di VC PZD | E: SY12/2, 35/1.8 OSS, 16-70 ZA OSS, 55-210 OSS, SY300/6.3 ED UMC CS, Metabones SB | Vintage FD & FL glass.