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Old Jan 14, 2009, 12:48 PM   #11
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WOW!!!



Thanks for that tip. Good points!

The 2 lenses you mentioned are "Canon" lenses.????????

I've beenpeaking at the Sigma, Tamron, Tokina, but didn't get too far yet? I can't remember if they offerd a f/2.0 or lower?








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Old Jan 14, 2009, 1:41 PM   #12
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Of the third party manufacturers, only Sigma makes fast primes (f/2.0 or better) and their longest one is 50mm.
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Old Jan 15, 2009, 6:06 AM   #13
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I've found a Canon EF 85mm f/1.8 USM telephoto for under $350



I'll probably go with this one once I gather up some more extra cash.



Anyone heard of this lens? Pro's...... Cons?



The reviews I've read on line seem positive.(thus far)




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Old Jan 15, 2009, 9:13 AM   #14
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Homebrew5454 wrote:
Quote:
I've found a Canon EF 85mm f/1.8 USM telephoto for under $350


Anyone heard of this lens? Pro's...... Cons?

I have it and it's an excellent lens. Here are a couple basketball shots with it (granted, not with the XS but another Canon body):






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Old Jan 15, 2009, 9:35 AM   #15
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Great Info and even greater photos..



I've been reading some posts on the sports shooting forum. I have to read up and understand the White balance a little better....and also. practice, practice, practice.



One more thing (what is the USM) in the lens description. you mentioned that a couple times in your comments to other photographers??



thanks once again.




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Old Jan 15, 2009, 9:44 AM   #16
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Well, USM actually has 2 different meanings depending on the context:

In a "lens" context, USM refers to Canon's Ultra Sonic Motor. It is their lens-based focus system for Canon manufactured lenses. Actually Canon has 3 different lens based focus systems.

Un-named - if you don't see USM in the description the lens still has a focus motor but it's noisy and slow.

Micro vs. Ring USM: There are actually 2 different types of USM in canon lenses. Micro USM is the lesser of the two, Ring USM is the better. There isn't a designation on the lens that distinguishes between the two - i.e. Canon does not advertise which lens has which although you can often see in the lens descriptions which lenses have Ring - typically the 'L' lenses.

Sigma has something similar - they call it HSM - Hyper Sonic Motor.

The other USM term refers to post processing. It stands for UnSharp Mask. It is a tool for sharpening photos. It offers more control and generally produces better results than in-camera sharpening and many 'sharpen' tools in software. MOst software packages have both a 'Sharpen' and 'Unsharp Mak' tool.
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