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  1. #11
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    Quote Originally Posted by cdifoto View Post
    So you know it's unreliable, yet you cannot come up with a reason why? How Coldrain of you.
    Of course I do not know why, am I involved with that website?
    Just go play around there a bit with lenses you yourself know well, and lenses you know to be well performing. You will soon come to the same conclusion, and yet I am sure you will not know the "why" then either....
    Canon EOS 350D, Tamron SP AF 90mm F/2.8 macro, Sigma 18-50mm F2.8 DC EX, Canon EF 70-200mm f/4 L USM, Tokina AT-X124 Pro 12-24mm F4, Soligor 1.7x C/D4 DG Teleconvertor, Manfrotto 724B tripod, Canon Powershot S30

  2. #12
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    Quote Originally Posted by coldrain View Post
    Of course I do not know why, am I involved with that website?
    Just go play around there a bit with lenses you yourself know well, and lenses you know to be well performing. You will soon come to the same conclusion, and yet I am sure you will not know the "why" then either....
    Hah I'm just ribbin' you a little. I don't put much stock in that site either. But I do know why. It's because they're testing uber extreme edges on a very high contrast test chart. It's good for testing but it really doesn't give any kind of big picture.

    Of course even the site owner/tester admits there is something wonky about the 17-55 test:

    Quote Originally Posted by www.the-digital-picture.com
    For the most part, I find the results to be very indicative of the image quality of the lens being tested and the comparisons work very well - the results are even better than I had hoped for. However, there are a few lens with results that I'm not totally satisfied with. The Canon EF-S 17-55mm f/2.8 IS USM Lens and Canon EF 24-105mm f/4 L IS USM Lens do not seem to like the close subject distances - they under-performed in the comparison tool. And the cheap Canon EF-S 18-55mm f/3.5-5.6 IS USM Lens performed better the wider focal lengths at the relatively short distance than I would expect to see from this lens - it over-performed in the comparison tool.
    Ouch.

  3. #13
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    Quote Originally Posted by cdifoto View Post
    So you know it's unreliable, yet you cannot come up with a reason why? How Coldrain of you.
    Although I do agree that some of the results on that site just seem plain wrong, Coldrain certainly did give you the reason why. "It doesn't agree with his opinion."

    edit: (in bold) I guess that it doesn't agree with my opinion then, either. Obviously another good reason why it is unreliable.

    Ray.
    Last edited by Ray Schnoor; 03-21-2007 at 07:54 AM.

  4. #14
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    Quote Originally Posted by Ray Schnoor View Post
    Although I do agree that some of the results on that site just seem plain wrong, Coldrain certainly did give you the reason why. "It doesn't agree with his opinion."

    edit: (in bold) I guess that it doesn't agree with my opinion then, either. Obviously another good reason why it is unreliable.

    Ray.
    I think the fact of the matter is that most of us proabably expect expensive Canon glass to be superior to lenses costing much less, but this isn't always the case. I posted some testing on here recently were my kit lens wide open was as good optically, in terms of center resolution, as my 50mm 1.8 and my 10-22.
    Michael B.
    Canon 5D2, 550D, Sony NEX 5N, Sigma 15mm fish, 24L mkI, 35L, 40mm f/2.8, 50 1.8 II, Sigma 50 1.4, Sigma 50mm f/2.8 macro, 60mm macro, 100mm f/2, 70-200 f/4, 200 f/2.8 mk I, Tamron 28-75 f/2.8, 430EX. Growing list of MF lenses!

  5. #15
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    Quote Originally Posted by michaelb View Post
    I think the fact of the matter is that most of us proabably expect expensive Canon glass to be superior to lenses costing much less, but this isn't always the case. I posted some testing on here recently were my kit lens wide open was as good optically, in terms of center resolution, as my 50mm 1.8 and my 10-22.
    True to a point. My kit lens was ok at the center too. But everywhere else was mush unless I stopped down to f/8...and I rarely have that luxury.

    Good enough for web display and snapshot sized prints though.
    Ouch.

  6. #16
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    Cool Factual farce

    Why not just push the factual data aside and live on opinion.

    You can just go ahead and THINK your shots with the Canon look great and we will all buy into it, ok? The heck with the facts. Of course, then again, YMMV.

    TAMRON glass ... shoot with disdain.

    Note to Jeff: No photographers were hurt during this discussion.
    Last edited by DonSchap; 03-21-2007 at 09:50 AM.
    Don Schap - BFA, Digital Photography
    A Photographer Is Forever
    Look, I did not create the optical laws of the Universe ... I simply learned to deal with them.
    Remember: It is usually the GLASS, not the camera (except for moving to Full Frame), that gives you the most improvement in your photography.

    flickr & Sdi

  7. #17
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    Quote Originally Posted by michaelb View Post
    Don Schap is going to love this one!!!

    I hope this hasn't already been posted here.

    Intersesting comparison at The Digital Picture....Click on the link below. The images shown are frome the Tamron 17-50; if you roll over the image it becomes the 17-55 image. Overall, the Tamron looks to edge out the 17-55 here.

    http://www.the-digital-picture.com/R...96&FLI=0&API=0
    As a side note...

    It seems that the images shown are from the Canon 17-55, when you roll over the image the Tamron 17-50 samples get shown. Not the other way around.
    Canon EOS 350D, Tamron SP AF 90mm F/2.8 macro, Sigma 18-50mm F2.8 DC EX, Canon EF 70-200mm f/4 L USM, Tokina AT-X124 Pro 12-24mm F4, Soligor 1.7x C/D4 DG Teleconvertor, Manfrotto 724B tripod, Canon Powershot S30

  8. #18
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    Quote Originally Posted by coldrain View Post
    As a side note...

    It seems that the images shown are from the Canon 17-55, when you roll over the image the Tamron 17-50 samples get shown. Not the other way around.
    Your absolutely right; I wrote it backwards. I just fixed my original post - thanks.
    Michael B.
    Canon 5D2, 550D, Sony NEX 5N, Sigma 15mm fish, 24L mkI, 35L, 40mm f/2.8, 50 1.8 II, Sigma 50 1.4, Sigma 50mm f/2.8 macro, 60mm macro, 100mm f/2, 70-200 f/4, 200 f/2.8 mk I, Tamron 28-75 f/2.8, 430EX. Growing list of MF lenses!

  9. #19
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    Quote Originally Posted by DonSchap View Post
    Why not just push the factual data aside and live on opinion.

    You can just go ahead and THINK your shots with the Canon look great and we will all buy into it, ok? The heck with the facts. Of course, then again, YMMV.

    TAMRON glass ... shoot with disdain.

    Note to Jeff: No photographers were hurt during this discussion.


    FIGHT! FIGHT! FIGHT! FIGHT!
    5D MK III, 50D, ELAN 7E, 17-40mm 4, Sigma 10mm 2.8 fisheye, 18-55mm 3.5-5.6 IS, 30mm 1.4, 85mm 1.8, 580 EX, 430 EX speedlight, Pocket wizard flex and mini.
    Canon G10

    Pentax P30, 50mm 2.0

  10. #20
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    Feb 2006
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    Des Plaines, IL
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    Red face Whuh? Lil' humble moi?

    Quote Originally Posted by Nickcanada View Post
    FIGHT! FIGHT! FIGHT! FIGHT!
    Oh, you're just hopin', aren't ya? LOL

    Nah ... you guys shoot your money your way ... me, I scrimp and try to get as good a shot. Just watch ... VC is a comin' ... and let the games begin.

    Who has more fun with glass than we do? Geez, I gotta getta life ...
    Don Schap - BFA, Digital Photography
    A Photographer Is Forever
    Look, I did not create the optical laws of the Universe ... I simply learned to deal with them.
    Remember: It is usually the GLASS, not the camera (except for moving to Full Frame), that gives you the most improvement in your photography.

    flickr & Sdi

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