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View Full Version : 28-135 IS USM - Sweet spot

Maxima
3rd of May 2005 (Tue), 12:39
Can anyone tell me what the sweet spot for this lens is? And @ what focal length will you see the sharpest image? Thanks much!
J Rabin
3rd of May 2005 (Tue), 12:40
f/8 - f/11 and between 70-135 worked good before I sold it. Less than f/8 and images were fine personal stuff, but not good enough for work. J
toddb
3rd of May 2005 (Tue), 15:51
Ya, that's about what I saw too, f/8-f/13. I seem to shoot allot at 50mm and looks pretty good there as well...just sort of in the middle of the focal length I guess, but I notice the sharpness factor in the aperture then in the focal length personally. I really try to avoid the top 2 widest apertures if I can help it on this lens, but it's not really that bad, I think it is better then allot of the non-L lens.
ed2day
3rd of May 2005 (Tue), 15:57
At f/11 I think mine is sharper than both my 17-40L and recently acquired 24-70L.
toddb
3rd of May 2005 (Tue), 16:08
ya, I couldn't hardly tell at f/11 with my 17-40 and my 50mm 1.8.
Maxima
3rd of May 2005 (Tue), 16:15
Thanks much for the help guys, I'll have to see what she can do at f/11.
toddb
3rd of May 2005 (Tue), 17:30
Thanks much for the help guys, I'll have to see what she can do at f/11.

Don't forget f/8 is really good too. For indoor shots I almost always keep it on f/8 and let the flash compensate for the lighting.
J Rabin
3rd of May 2005 (Tue), 18:17
Can anyone tell me what the sweet spot for this lens is? And @ what focal length will you see the sharpest image? Thanks much!

Maxima. I looked for a 28-135mm image. This was handheld @70mm and f/13, my sweetspot for this lens. Plane of focus through apples near her left hand. The reducing/sharpening for jpg does not do this lens image justice when at its best. In original, the apples high up and back were appropriately blurry.
http://postit.rutgers.edu/uploads/Apple%20Promo%20Gail%2Ejpg
This was part of an apple promotion. Subject matter not interesting to you guys, but the image color, contrast, sharpness were good for consumer lens. Hope that helps your assessment. J
Maxima
3rd of May 2005 (Tue), 18:50
J Rabin,
Nice!! Thanks much for sharing, I need to play around with mine some more. Thanks again!
london
3rd of May 2005 (Tue), 19:02
I'm selling my 28-135mm on eBay (purchased a 70-200mm f/4 instead). I just wasn't happy with it, despite generally favorable reviews. Overrated, I thought.
Adam Hicks
3rd of May 2005 (Tue), 22:02
From the reviews I've seen and this lens' ratings, I think eBay is the sweet spot for it.

:) Sorry couldn't resist. But try the Tamron 28-75 instead. Anything over f3.5 is the sweet spot on it.

Adam
london
3rd of May 2005 (Tue), 22:46
From the reviews I've seen and this lens' ratings, I think eBay is the sweet spot for it.

Well said, Adam! :D