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Anyone own a Canon 100 f 2.8 USM telephoto/macro?
Old 01-09-2006, 03:30 PM   #1 (permalink)
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And, how do you like it?
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Re: Anyone own a Canon 100 f 2.8 USM telephoto/macro?
Old 01-09-2006, 04:18 PM   #2 (permalink)
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I have that lens. It does incredible work. Here's a sample shot:

http://www.rfredricksmith.com/bitsmacro.jpg

Shot at 1/60th at f4.5 with on camera flash. Shot with a tripod, even though using flash. I almost always use the tripod for macro work even when not needed just for the added safety it gives me.

Cheers,
rfs
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Re: Anyone own a Canon 100 f 2.8 USM telephoto/macro?
Old 01-09-2006, 05:23 PM   #3 (permalink)
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Wow!

So, that's @ 4.5! At 2.8 that close, what's the DOF like? Do you ever have a need for going to 2.8 when doing macro work?
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Re: Anyone own a Canon 100 f 2.8 USM telephoto/macro?
Old 01-09-2006, 06:13 PM   #4 (permalink)
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The only time I go to 2.8 is when I don't have a tripod and I need to take the shot. The area in focus using 2.8 and at 1 to 1 is very very low, so without a tripod, you'll often move out of the DOF range just by pushing the shutter button. I use the lens on the 20D which has a 1.6 crop factor, so I need to have a shutter speed of at least 1/200th to feel safe when shooting without a tripod.

Here's a tripod shot of a quarter laying on top of a penny. I focused on the word "Liberty" on the quarter. I shot it at 2.8 at 1/100th. I set it up so that I could get as close to the coins as I could for 1 to 1 so the front of the lens was 6-7 inches from the coins. Of course its really 1.6 to 1.

http://www.rfredricksmith.com/coinmacro.jpg

I think it will give you an idea of the small DOF. As for all lens, if you stop down a bit you'll get some extra sharpness. But this one came out pretty well.

Cheers,
rfs
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Re: Anyone own a Canon 100 f 2.8 USM telephoto/macro?
Old 01-09-2006, 07:49 PM   #5 (permalink)
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Wow, that's nice!

Thank you for the help! I've been debating about what to get for this type of lens, I went to Calumet this past weekend and had them mount one on a 20D to see how it operated, and it focuses REALLY smooth and fast. Thanks for the examples! I think I'm sold! (in a couple months, when I have the second half the money saved)
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Re: Anyone own a Canon 100 f 2.8 USM telephoto/macro?
Old 01-09-2006, 10:06 PM   #6 (permalink)
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[ QUOTE ]
And, how do you like it?

[/ QUOTE ]

Well,....I have the older version...

Here:

Photographed with the old D30


Photographed with the 20D


JP
 
 
Re: Anyone own a Canon 100 f 2.8 USM telephoto/macro?
Old 01-09-2006, 10:31 PM   #7 (permalink)
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So, it's been a good lens?
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Re: Anyone own a Canon 100 f 2.8 USM telephoto/macro?
Old 01-09-2006, 10:39 PM   #8 (permalink)
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[ QUOTE ]
So, it's been a good lens?

[/ QUOTE ]

Yes... pretty much... Mine begins to fall apart beyond f16.. There is a little chromatic abrasion (red fringing) wider open..like 2.8 - f4.. but it isn't too noticable,...and besides,...that can happen to most lenses depending on how you light something, or what the subject is.....say like you are photographing chrome..the specular highlights if lighted with the light bouncing off the edges, and or blowing out stuff, it can happen.. but,...all you have to do is shoot in RAW,..and correct -29 red (or less) in the "Lens Detail"..and that usually takes care of it without shifting the other colours too much..

I couldn't tell you if the newer one is any better....it looks like a totally different design..but from history,...they *usually* come out with something better.. [img]/ubbthreads/images/graemlins/smile.gif[/img]

JP
 
 
Re: Anyone own a Canon 100 f 2.8 USM telephoto/macro?
Old 01-09-2006, 11:03 PM   #9 (permalink)
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Thanks!

And, I learned what the lens detail is useful for, I've never used it before other than experimenting.
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Re: Anyone own a Canon 100 f 2.8 USM telephoto/macro?
Old 01-16-2006, 09:15 PM   #10 (permalink)
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I've got the older version and I have been moderately happy with it. It's outstanding for macro work and since I shoot primarily food that's great for me. My biggest gripe is the focus is PAINFULLY slow so I almost always focus manually. I have used the newer version before as well and the focus was much quicker so that's good to know. Overall I am more impressed with the Nikon version of the same lens from the same time period. I don't have any experience with the current nikon so I don't know how it compares with the current Canon.

All in all, for macro on the Canon platform it can't be beat. Otherwise you might be better with the 85mm prime

good luck

Steve

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