Quote Originally Posted by hodnik View Post
so today after shooting at the airport, i set the camera up on the tripod, set the 10sec timer, set the exposure, focal, aperture all the same and took some shots. i will attach them below.

i do not want to come off as a 'troll', or a complainer, whiner, whatever. i want to make sure i am getting my money worth here.

thanks for looking
Hi, at f/8 you will find most lenses are very good IQ-wise, and the difference between an average lens and a high-end lens is small at f/8 (if f/8 is OK you don't really need the expensive lenses). Another test you could do to see what the 70-300L gives you would be to compare shots at 250 mm f/5.6 between your new lens and the EF-S 55-250. You could use some of the popular test shot subjects (e.g. a focus test chart), and since aviation seems to be your thing you could also take some test shots at a subject that has bright sky in the background (e.g. a flagpole or a chimney) to see field-like differences in CA etc.

The EF-S 55-250 is not bad at all, but I'm sure you'll notice the difference - probably a more significant difference than in the shots above.

Good luck with your new lens!