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Old May 16, 2009, 12:49 PM   #11
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Quote:
Originally Posted by evilthought View Post
I read all the reviews in that page that compare the 100-300 APO to the 70-210/4 Beercan. Two rated the 100-300 APO better, two rated it worse, and one said it wasn't as good as "the beercan family", which is made up of multiple lenses.

The user reviews for the 'D' are more favorable, and anyone that mentions CA for eaither lens says it's good.
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Old May 20, 2009, 1:14 PM   #12
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I got 100-300 APO (non D) so now I can test it. Beercan is much sharper. APO has less CA but it's more expensive and can't match beercan in sharpness.

100mm F5.6

(1) Beercan...




Original:
http://farm4.static.flickr.com/3654/...ab30c701_o.jpg

(2) APO


Original: http://farm4.static.flickr.com/3361/...b12ff1b6_o.jpg


200mm F5.6

(1) Beercan



original:
http://farm4.static.flickr.com/3559/...3f493bd2_o.jpg

(2)



Original
http://farm4.static.flickr.com/3586/...aab848c9_o.jpg
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Old May 20, 2009, 1:14 PM   #13
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Hmm ... beercan much better overall?
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Old May 20, 2009, 1:32 PM   #14
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The Beercan can focus closer than the 100-300 APO. I would have preferred to see photos of a subjet that was a little further off.
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Old May 20, 2009, 1:38 PM   #15
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Most lenses are going to be sharper with better contrast with the aperture stopped down a bit from wide open. The sample from the 70-200mm f/4 is one stop down from wide open at f/5.6. Yet, the sample from the 100-300mm is at it's widest aperture (f/5.6 for that focal length).

They're two different lenses and it depends on what you want to shoot. You don't get 300mm with the 70-200mm f/4. ;-) So, you could have a lot fewer pixels representing a distant subject using the beercan if you needed to zoom all the way into max focal length before your subject started filling more of the frame, as compared to the longer 100-300mm at it's max focal length (where you could fill the frame more with a distant subject)..
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Old May 20, 2009, 1:42 PM   #16
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This wasn't close.. it was around 15ft distance.
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Old May 20, 2009, 1:46 PM   #17
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True... but 100-300 APO isn't worth the price. I think it's pretty similar to other lenses in this range. Tamron 200-400mm or Sigma 400mm, about same price as 100-300 APO, is probably better combination with the beercan.
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Old May 20, 2009, 1:54 PM   #18
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Also, at 100mm APO max is F4.5, not F5.6. Here is beercan at F4. Even though not as sharp as at F5.6, the borders are still sharper.

http://farm3.static.flickr.com/2433/...c33473d9_o.jpg
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Old May 20, 2009, 1:58 PM   #19
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I dunno about that. The Tamron 200-400mm has a pretty bad reputation for image quality, especially on it's longer end.

It's MTF charts stink, too. It's one of the worse performers you can find in a zoom with it's focal range as you zoom in more based on charts I see for it. You'd have to try pretty hard to find a lens that does worse. They may have made some improvements in newer versions of it. But, I wouldn't count on it from user reports I've seen.

http://old.photodo.com/prod/lens/det...LD(I-803.shtml

It's my understanding that the newer 200-500mm is much better.
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Old May 20, 2009, 1:59 PM   #20
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Quote:
Originally Posted by evilthought View Post
Also, at 100mm APO max is F4.5, not F5.6. Here is beercan at F4. Even though not as sharp as at F5.6, the borders are still sharper.
Yes, but your samples above showed them at 200mm and f/5.6 (with the EXIF indicating the max aperture at 200mm for the 100-300mm was f/5.6).
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