Canon L Lens : Are Canon L Lenses Better Than Other EFs?

Posted on Mon Oct 19, 10:18 by Daimaou, Survivor, Tokyo - Japan
Home Page: http://www.akihabaranews.com
Manual Focus, Tripod, same ISO, Same aperture... This is not the first time I see such difference between this lens and others

Posted on Mon Oct 19, 10:36 by PeterR, Denmark
Home Page:
If you shot the pictures at aperture 4.0 for both lenses, 4.0 would be the worst choice for the L-lens (24-105) and thus seem out of focus ie. unsharp.

Shooting the picture with the EF50mm F1.4 USM at aperture 4 gives the lens a considerable advantage in terms of sharpness. Then again, thats the beauty of having af 50mm fixed lens at F1.4

Posted on Mon Oct 19, 11:00 by Lorra, London
Home Page:
Gosh, learn how to focus first will you?

Posted on Tue Oct 20, 03:02 by Turbokuni, Photographer, Orange County, California
Home Page:
Fixed lenses are always sharper than zoom lenses

Posted on Tue Oct 20, 05:06 by onlyamateur, observer, thenet
Home Page:
agreed with the above comments that you should control focus with manual distance control, lock everything else (that's aperture for you, not just ISO).

You could use better test subjects too, with many fine lines and color contrast. (PS: It's okay to copy other camera review site focus tests)

Plus, the lighting was really harsh (taken with built-in flash, how horrible!).

If there's any point in your post, it's that an L-lens that cost many more, will allow Beginners to take more proper pictures.

Not that beginners really need L-lenses anyway, with their awesome build quality and optics.

Posted on Tue Oct 20, 08:14 by Daimaou, Survivor, Tokyo - Japan
Home Page: http://www.akihabaranews.com
Well you are all wrong for sure... The Picutre on the Left was taken with the 15-85mm at 50mm, while the picture on the right with the 24-105mm.

Setting was :

Tripod
No Flash
Same ISO 100
Focal Length 50mm
F/4.0 On both lens
Exposure 3.2 (each time)
Manual Focus (Did it several time and check with AF just in case)

Posted on Tue Oct 20, 08:41 by eh
Home Page:
exposure is 3.2 sec? maybe your floor was shaking.....or maybe an earthquake?? 3.2 sec sounds a long time for exposure, expecially to do a sharpness test....

Posted on Tue Oct 20, 09:01 by Daimaou, Survivor, Tokyo - Japan
Home Page: http://www.akihabaranews.com
This was in Low Light condition I did it at night, I did other test yesterday afternoon under the sun and same result, I will do it again today anyway since I need to do more test with this camera

Posted on Tue Oct 20, 07:17 by D, Engineer, Korea
Home Page:
Was IS turned on when you shot with the 24-105? Never used a 15-85 before but with my 24-105 the IS gets a little flaky sometimes when doing long exposures on a tripod. I seem to get better results when I turn it off during night shots. Maybe try some test shots again with faster shutter speeds and post the exif data if you can (or raw files if possible).

Posted on Sun Oct 25, 09:25 by Dayak, Engineer, Jakarta
Home Page:
If you use an IS lens with tripod, you must turn of the IS.

When you take the picture, the IS is On or Off ?