lesong_wang

(continued)

If you have the money, go for the 35 f1.4 L, which is the perfect lens in this focal range, though its build quality leaves a lot to be desired for such an expensive "L" prime lens.

I have the 28 f1.8. Optically it is very close to 24 f1.4 L. Build quality is not the best but better than the non-usm primes such as 50 f1.8, 35 f2, etc, you know, more in the class of 85 f1.8/100 f2. I use it a lot for indoor non-flash pictures. It is quite usable wide open and can handhold without flash for most situation at ISO 400. Edge is soft at large aperture, but I wonder if one cares much about edge performance when shooting wide open. Stop to f5.6, any prime lens would be able to out-perform the resolution of your 10D.

On 10D, its focus is deadly accurate, while I constantly have inaccurate focus with 35 f2 and 50 f1.4. Enough for me to sell my 35 f/2 and keep the 28 f1.8 as my main indoor lens.