I am having serious problems with my new lens:
1 CA .
3 vignetting ,light falls off , seems even worse than my kit .
But I like the ring USM with FTM feature.
So I am not sure should return it and exchange to another copy of this lens , or just send it to Canon and get it calibrated.
As you mentioned , EF-S lenses can only be used on a cropped body , this means I ca not use my EF-S60mm (did not get it yet , just ordered) on my friend's 5D to test, right?
Well, what is a comparable or similar macro lens in this price range that can be used on a FF body?
Is this a macro?
I mean I am not sure all primes are also macro lenses .
sorry for my ignorance , I hope some one compare this EF 50 aginst EF-S60, I 've got a EF50F1.8 but I hate it , this looks so so so horrible like a toy , plus it is so soft compare to EF-S60 , is EF 50 F1.4 any better than F1.8?
If so I may get the macro lens instead as I am interested in the 5D and sharing lenses with my father and my friend .
One final question : Why are there so many people raving about the EF50 F1,8 and recommending any newbie to get it with his or her rebel or 30D?
I can see this produces interesting bokeh but it is not as sharp as many raving about it to be , when you hava a fast zoom lens like EF-S17-55 or Tamron 17-50 F2.8 , do you still need this kind of fixed focal length lens like this cheap 75USd lens?
I think 50mm on a cropped body is too long or narrow and for landscape , it is not sharp enough .
BTW, my friend's Tamron 17-50 is very sharp , much sharper than my father's Sigma 17-70 , and my Canon comes some where in between them .
If the Tamron had USM and FTM , I will get it without any hesitation.
It is quite fast focusing lens ,though it is too noisy to use in my church .
I beleive this Tamron got some award from EISA.
Maybe , I will add this one , it does not hurt my other lenses or camera, I just need to sell my Fuji S6000FD , which I'm fed up with .
Ok thanks a lot and you are right IS works really well , makes about 3 stops difference , some times even 4 stops .