Foggy wrote in post #8502888
The only problem is that the Sig 30 1.4 is a crop lens only. Not a problem but I worry about the resale value later when I need to upgrade the lens/to FF.
The great thing about the lenses I am letting go, are that I bought them used. I can easily break even with the price I paid back then.
For the Siggy 30, I'm not sure I would be able to break even with it when I sell it in the future. I could be wrong.
I haven't tried the lens but I have heard of the borders being quite soft.
So buy the Sigma used, too. I got mine for $320 shipped. I could easily get that back. And you can view sample images to make sure it is a good copy.
The corner softness is blown out of proportion, IMO. No it is not a landscape lens with razor sharp corners at F8. The 35L will win that contest - if only because it is a FF lens on a crop cam. The 30's corners are not soft, just softer than the center. And besides, in any real world situation where you want a f1.4 fast prime, the corners are probably not going to even be in focus.
If you wanna buy the L, great, I was just trying to save you a buck or two. For a crop camera, the Sigma 30 is 95% of the L lens for 30% of the price.