satx
Posts: 2771
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Lenses For 350: True Benefit Of USM?

Mon Sep 26, 2005 12:36 pm

I'm looking for a lens to go my a 350/XT I just ordered. I'm currently looking at these two lenses:


Canon Zoom Telephoto EF 75-300mm f/4.0-5.6 III Autofocus Lens 75-300mm f/4.0-5.6 III Autofocus Lens
Mfr # 6473A003 • B&H # CA7530043EFQ
Price : $ 159.95


Canon Zoom Telephoto EF 75-300mm f/4.0-5.6 III USM Autofocus Lens USA
Mfr# 6472A002 • B&H# CA7530043EF
Our Price: $ 189.95


Question 1: Is the USM much of a benefit?
Question 2: Is there an even better lense for similar money?
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seachaz
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RE: Lenses For 350: True Benefit Of USM?

Mon Sep 26, 2005 4:00 pm

2 main benefits I know of are speed and silence. I shoot Nikon but their AF-S lenses work on basically same principle of USM on Canon. Typically the lens can focus a lot faster then a non-USM lens depending on the camera body it is hooked. The focusing elements can just physically move faster. For tracking moving targets USM may lead to better results depending on the situation. Second the noise, USM is basically silent, non-USM tend to make some noise.

For $30 more I'd grab the USM though I've never used either lens. As for a better lens in that price range you probably won't find much, not sure what Sigma or some of the other makers have in that range.

If there is one thing I don't like about shooting Nikon its the lack of AF-S (USM) lenses though more are coming slowly - even Sigma has their version of USM now - HSM.
 
willo
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RE: Lenses For 350: True Benefit Of USM?

Mon Sep 26, 2005 4:30 pm

When I recently moved up to a 300D I was also looking at lenses in the same range. After reading reviews and having a play I went for the Sigma AF 70-300mm f4-5.6 APO DG Macro Super (BH sell it for $220). Nearly all of my pictures in dB since June have been taken with the Canon/Sigma. Like the Canon, it also suffers from softness at full zoom, however, there are no compatabilty issues and the autofocus works just fine. Of course it's not "L" glass and you shouldn't expect "L" glass results, but providing you work within the limitations, it's a more than adequate lens to get you started.

cheers

Andrew Scott
 
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scbriml
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RE: Lenses For 350: True Benefit Of USM?

Mon Sep 26, 2005 9:16 pm

Quoting SEAchaz (Reply 1):
If there is one thing I don't like about shooting Nikon its the lack of AF-S (USM) lenses though more are coming slowly - even Sigma has their version of USM now - HSM.

Nikon's version is SWM (Silent Wave Motor). I have these lenses that are all SWM:
10.5mm fisheye
12-24mm
18-70mm (kit lens with D70)
24-120mm VR
70-200mm VR

My only non SWM is the 80-400 VR. Sometimes the older, slower AF does mean I miss the odd shot, but the cost to me of a 400mm lens with SWM and VR isn't worth the shots I've missed.
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F9Widebody
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RE: Lenses For 350: True Benefit Of USM?

Mon Sep 26, 2005 9:41 pm

The Non-IS 75-300 is a SLOW focuser - it hunts....alot. Be warned. That said, you can save a good amount of money if you can put up with the slow focusing and not get the USM version.

Regards
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seachaz
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RE: Lenses For 350: True Benefit Of USM?

Tue Sep 27, 2005 12:20 am

Quoting Scbriml (Reply 3):
My only non SWM is the 80-400 VR.

Do you find this lens ends up on your camera more often then the 70-200 VR when your out shooting airplanes? I've got the 70-200 VR and love it though sometimes wish I had a bit more reach.
 
satx
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RE: Lenses For 350: True Benefit Of USM?

Tue Sep 27, 2005 1:30 am

First of all, thanks to everyone who posted!

Quoting F9Widebody (Reply 4):
The Non-IS 75-300 is a SLOW focuser - it hunts....alot. Be warned. That said, you can save a good amount of money if you can put up with the slow focusing and not get the USM version.

What about the non-IS USM? You get the speed of the USM w/o the IS for half the cost of the IS USM and the IS USM is out of stock at B & H anyway.
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Fly747
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RE: Lenses For 350: True Benefit Of USM?

Tue Sep 27, 2005 1:40 am

Quoting F9Widebody (Reply 4):
The Non-IS 75-300 is a SLOW focuser - it hunts....alot. Be warned. That said, you can save a good amount of money if you can put up with the slow focusing and not get the USM version.

IS and USM are two different things. I own the 75-300 USM non-IS and it's not a slow focuser. The NON-USM is a slow focuser but the IS USM and non-IS USM have the same focusing speed.

Ivan
 
IL76
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RE: Lenses For 350: True Benefit Of USM?

Tue Sep 27, 2005 1:45 am

I have/had the 75-300 USM II (older generation) and it isn't/wasn't bad at all... OK, now I'm spoilt with L-lenses and I rarely use it anymore, but the 75-300 takes fine pictures. I've used it for years. My latest upload (SQ 747) was taken with that lens.
I think the USM is quite handy... It's a bit quicker than the non-USM, that's all...

Eduard
 
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scbriml
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RE: Lenses For 350: True Benefit Of USM?

Tue Sep 27, 2005 2:12 am

Quoting SEAchaz (Reply 5):
Do you find this lens ends up on your camera more often then the 70-200 VR when your out shooting airplanes? I've got the 70-200 VR and love it though sometimes wish I had a bit more reach.

The 70-200 VR is arguably the finest lens Nikon make. I use it whenever I can, only using smaller or larger lenses when I really need to. The 80-400 is not as sharp, but I've been getting better results after I changed my UV filter (long story - see other thread).

I would like to try the 200-400 VR, but I'd need to win the lottery first.  cry 
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waketurbulence
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RE: Lenses For 350: True Benefit Of USM?

Tue Sep 27, 2005 2:13 am

I agree with Eduard. I have the oldest version of the 75-300 NON IS and NON USM, it is a DC motor and it is loud. Every shot of mine in the DB (about 100) was taken with that lens. It is slow in comparison to a L lens, but it is fine for aviation, you just need to know how to use it. As a cheap beginner lens it is fine, if you edit properly you can get many shots on A.net. Are there better lenses out there? Sure! But for being so cheap it is a great product.
-Matt
 
F9Widebody
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RE: Lenses For 350: True Benefit Of USM?

Thu Sep 29, 2005 6:48 am

Sorry about that, that was a typo. I meant to be referring to USM the entire time.

Regards
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