IQ comparison advice

[lucky_13]

Hi I'm wandering if the IQ is compareble at all between the Canon 24-105 F/4L IS USM and the Canon 18-135 STM lenses. this is not what focal length is better on a crop comparison just IQ please.

 

[valb]

Easy. IMHO the 24-105 is streets ahead of the 18-135 not only in IQ but in every other respect excluding focal length.

 

[cmcm789]

It will depend on how/ where you use them. If you use them both stopped down, you may not notice much difference in IQ. I recently bought a Canon 70-200 f4 to upgrade from my 55-250 IS. In every respect the 70-200 is better (apart from lack of IS) but IQ is not the greatest upgrade. There is a lot of talk about better glass having better contrast and colour, but side by side with some of the cheaper lens, its barely noticeable.

You would be best if you can to find someone who has both and take advice from them. In the absence of that, check http://www.photozone.de/ for reviews or compare resolution here http://www.the-digital-picture.com/...meraComp=736&SampleComp=0&FLIComp=0&APIComp=0

Obviously that's only going to give you limited information, but the 18-135 STM seems to do ok.

 

[lucky_13]

Thank you. I would be shooting at F/4 most of the time. I had the 15-85 and i left the aperture to 5.6 on that as I didn't want the exposure to change as I zoomed. I have a 50 1.8 and I only shoot between f1.8 and f4