Tuesday, 19 June 2018

lens - Is there an IQ gain from Canon's 18-135 to 24-105L?


Just got a Canon 40D body, and was about to get Canon's 24-105L lens. I hear people raving about the lens, and it all made sense until I saw a Cameralabs' review of the lens.




So don’t buy the EF 24-105mm expecting an upgrade in optical quality alone or you may be disappointed. Where this lens really scores over general-purpose EF-S lenses is in terms of build and mechanical quality ...



Now I'm contemplating getting a 18-135 for a 3rd of the price.


I'd be interested to hear from somebody who had some experience with the lenses, and not just read some reviews (like I did).



Answer



I have a 24-105 L and it is an excellent lens. The build quality is superb which makes it heavy but the L series lenses become an asset as a result of their build - it will last.


The image quality is also excellent. Check out the digital picture review linked to above. Whilst Andy says some will say he is bias (for a long time I think he has only reviewed Canon gear) - the bias is somewhat irrelevant when you're comparing Canon to Canon.


The 18-135 covers a longer range, typically this isn't a good thing IQ wise in zoom lenses (with some exceptions). I haven't used this lens though.


Check out this link which contains comparison images of a lens test chart with both lenses. Set the focal lengths and apertures to comparable values. To me, at a quick comparison, the 24-105 looks to have significantly improved IQ:


http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=355&Camera=453&Sample=0&FLI=0&API=0&LensComp=678&CameraComp=474&SampleComp=0&FLIComp=1&APIComp=0



My advice? Invest in the best quality lenses you can afford to. If you buy L or at least don't buy EF-S, they will last forever and transcend any bodies you own be they cropped or full frame.


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