Canon EF 28-135mm F3.5-5.6 IS USM Q&As

Zoom lens | Canon EF | 2562A002
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By: autumneagle (Nov 29, 2015)
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Hey everyone, I'm new to DPReview. I'm a proud owner of a Canon 20D who just recently (Today!) bought a 5D Mark III. I've also got the vertical grip on order and intend to pick up a speedlite soon (my base exchange sells the 320 which I assume will do the trick? I've never used one before). My primary question is this: Should I get some new glass? I pretty much take a wide berth of images. I enjoy landscape, nature, and wildlife photography but I also enjoy getting up close and macro. I just...
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Right now I have a 60D with a 28-135 kit lens and a nifty fifty that I've been using for a little bit more than a year now. It's clear to me that you should invest in lenses before you worry about the camera body, but if I can get both an L lens and a 5D, is it worth the investment to switch from the 60D that I have? I am talking purely image quality, as I am fully willing to carry around a heavier camera with me wherever I go. I feel that if I just got the 24-70 f/2.8 II, that I wouldn't be...
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Hi everyone, I have a question to ask. I am going to take photos of my friends in graduation ceremony (I will sit away from them, maybe 10m I am not sure, hence I need telescope lens), and recently I got a EF 28-135 IS lens. I got this lens on purpose for taking pictures in the ceremony (I am poor). However, on 135mm side, the aperture is only 5.6, by using the ISO 640 (I am using 1D 4.2mp one, so I really dont want use higher ASA), the shutter speed on monitor is about 10,15 in normal rooms....
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Hello,I am attempting to understand the correlation between image pixel brightness and the camera exposure settings. For example my understanding is that a difference of 1 f stop in camera settings either doubles or halves the amount of light admitted during a photo. However when comparing the two images in Photoshop's histogram the mean luminance does not change by half or double and the differences appears to vary between different bracketed photo sets. Is there a formula for predicting the...
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http://i.imgur.com/0Wd4uyg.jpghttp://i.imgur.com/RDxJgk4.jpgGot this 50mm f/2.5 awhile back ago, but never really used it; planning to sell it now. The autofocus button was broken when I bought it from the original owner, but I always used the manual focus. Does this look like it can be fixed? How much would they roughly sell for right now?On a side note (to avoid posting two threads): I'm looking for a new lenses for my T1i. I've had my T1i for about 2-3 years now; sticking w. the 18-55 and...
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A co-worker sent this question to me in the hopes I could help her, but her question is a bit beyond me.  So I am hoping this might garner some master responses here.She shoots from a helicopter (average elevation of 600ft) with a Canon 7D and uses one of two lenses (Canon 28-135 f3.5 - f5.6 IS USM and a Canon 100-400mm f/4.5-5.6 IS L).  She shoots over the everglades, and her job is to take photos to help obtain bird counts in any given area.  Her goal is to get as clear as picture as...
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Hi, I asked another question about what were some good cameras for a beginner/intermediate. But this time I'd like to hear some camera lens combos. I'm more towards the intermediate side since I've been shooting in film for a couple years now. I also want good quality lenses. I really want to stay away from the kit lenses (18-55 and 55-250). I'm going to do mainly portraits and action photography. I've thought about getting a Canon T3i with 70-200mm f/4, 50mm 1.8, and  possibly a good walk...
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