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Old 2nd of December 2009 (Wed)   #1
wjscott
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Default Canon 50mm vs 28-105 USM

I have the 50mm 1.8 bu was thinking about upgrading my kit lens for my T1i. I was wondering how sharp the 28-105mm USM lens is compared to a prime? Also is the focusing very fast or does it hunt a little? I am on a tight budget and need to upgrade.
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Old 2nd of December 2009 (Wed)   #2
toxic
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Default Re: Canon 50mm vs 28-105 USM

"Tight budget" and "need to upgrade" typically don't go together...

A zoom is not replacement or upgrade for a prime. One way or another, get an 18-55 IS if you don't have one already.
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Old 2nd of December 2009 (Wed)   #3
wjscott
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Default Re: Canon 50mm vs 28-105 USM

I already have the 18-55 IS. I know that the zoom is not a replacement for the prime. I was just wondering if the 28-105 would be as sharp as the prime. Also is the 28-135 USM with IS worth the extra money compared to the 28-105 USM?
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Old 2nd of December 2009 (Wed)   #4
TSY87
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Default Re: Canon 50mm vs 28-105 USM

keep the 18-55. the 28-135 isnt wide enough. I had it, didnt really care for it.

you would be better off keeping the kit and getting the 55-250 if you wanted more reach.
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Old 2nd of December 2009 (Wed)   #5
wjscott
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Default Re: Canon 50mm vs 28-105 USM

i really dont want more reach, I just need a little more then 55mm. So you guys dont think it is worth it to get the 28-105 for a good travel and walk around lens?
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Old 2nd of December 2009 (Wed)   #6
algold
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Default Re: Canon 50mm vs 28-105 USM

28-105 f/3.5-4.5 USM is a nice little lens and the price is good. It's not wide on a crop camera, but gives you a very useful range for candid 'togging. It's light and small, has decent build quality, AF is very fast and precise (a lot better than 50 f/1.8). It's not as sharp as a prime, especially at the longer end. Min focus distance is quite good, bokeh is very good for a lens in this price range. I used it as a walk-around lens for about 2 years and was quite happy with it. Loaned it to a friend who uses it on 10D and he is very happy with the results as well. If you don't want/need a longer reach, it's a good choice for about $200 new, find a good used one and it will be even more attractive.
Taken with a 28-105 f/3.5-4.5 MkII USM:


Don't get a plasticky 28-105 f/4-5.6 by mistake, it's not good at all
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Last edited by algold : 2nd of December 2009 (Wed) at 13:42.
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Old 2nd of December 2009 (Wed)   #7
crn3371
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Default Re: Canon 50mm vs 28-105 USM

I wouldn't find 28mm to be wide enough for a walkabout lens. Your 18-55 IS is a fairly decent lens and the 55-250 IS is the perfect complement to it. If you want a one lens solution then perhaps the 15-85 IS or even the 18-135 IS might be something to consider.
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Old 2nd of December 2009 (Wed)   #8
Player9
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Default Re: Canon 50mm vs 28-105 USM

The 50mm prime is much sharper than the 28-105mm f/3.4-4.5 is at 50mm. The difference will be huge at f/4, but will start to become less noticeable at f/8.

The 28-105mm lens is a great lens for the price, but it's not as good as the 18-55mm IS lens.
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Old 2nd of December 2009 (Wed)   #9
MegaPutzel
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Default Re: Canon 50mm vs 28-105 USM

Keep the 18-55..

Yes the 28-105mm (the right one!) is a decent lens for the price. You might also want to consider the 24-85mm lens that can be had cheap also. This is a bit wider on a crop so it may interest you. Neither of these lenses would be sharper than the 50mm 1.8

IF you're looking to spend $100-$150.

Really your best option would be the 55-250mm. It goes nicely with your kit lens and prime set up.
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