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Author Topic: Canon 100-400 L IS--Hit or miss?  (Read 8119 times)  bookmark this topic!
olyduck
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Posts: 18


Canon 100-400 L IS--Hit or miss?
« on: June 06, 2008, 02:05:03 PM »

I'm an advanced amateur looking for a wildlife zoom to go with a Canon 40D.  I already have an EF USM 100-300, but it is a little on the short side for birds.  I am strongly considering the Canon 100-400 L IS.

I have read numerous posts around the web about "good copies and bad copies" of this lens and am still in a little shock that a Canon L lens would even have a a kind of hit or miss reputation (especially at $1400!).

1.  Is the "bad copy issue" just related to very early production?
2.  If so, assuming I am buying a new lens from a reputable dealer, how can I be sure that I am getting a recently produced lens?
3.  If the current 100-400 quality really is still hit or miss, what would be a reasonable (and better) alternative lens to cover about the same range?

Thanks,
Loyal, yet a little parnoid, Canon fan
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Bob Atkins
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Posts: 1163


Re: Canon 100-400 L IS--Hit or miss?
« Reply #1 on: June 06, 2008, 04:54:50 PM »

Did you read my recent review?

http://www.bobatkins.com/photography/reviews/ef_100_400_l_is_review.html

I had tested one 10 years ago and this new one seemed to be better. I guess over a 10 year production run they figure out how to improve QC.

The 100-400IS is a lens that's in reasonable demand. A new one from Amazon, Adorama etc. will be "fresh", I'm certain of that.

There is no better alternative to the 100-400IS. There's nothing sharper that covers that range.
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olyduck
Junior Member
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Posts: 18


Re: Canon 100-400 L IS--Hit or miss?
« Reply #2 on: June 06, 2008, 06:23:32 PM »

Thanks Bob.  I really appreciate your input.
-Dave
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leomodica
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Posts: 1


Re: Canon 100-400 L IS--Hit or miss?
« Reply #3 on: June 20, 2008, 08:35:24 PM »

Bob

I am having focus problems with my 100-400L IS lens. It's about two years old and I brought new from B&H. I use the center focus point all the time and shoot in well lit conditions use fast shutter speeds. I am using a Rebel XT. Of late I've been having tremendous problems with auto-focus. Most, and sometimes all, of my shots are out of focus. Things look in focus through the view finder. When I test it against a sign with black lettering on white background, the focus is fine. The shots I am having problems with most is shooting birds with the background sky. Does the lens need to be recalibrated by Canon?

I recently bought the 500mm/F4 IS lens and the shots I am taking with the 500 (Rebel XT) are very sharp. So, I really think it the 100-400, not the Rebel XT or my technique. Any advice?

Leo  Modica
http://www.pbase.com/leomodica
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