Lens Tests by LightRules
>> 3 Telephoto Zooms Tested
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3 Telephoto Zooms Tested
May 26 2005. Tested here are 3 well-loved telephoto lenses: Canon 70-200 f2.8 IS, Sigma 70-200 f2.8 EX, and the new Bigma "DG".
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Based on my 1 copy of the 150-500 (Bigmos), I found the 50-500 (Bigma) to focus faster. But it could be just my 1 copy.
does this focus any faster than the 150 500 ?
I have not used the new Tamron 70-200 f2.8. But with its lack of ring AF, it doesn't really appeal to me personally for a lens in this particular category. I am sure its optics are quite nice though.
How does the new Tamron 70-200mm f2.8 compare?
have you turn off the IS mode while using tripod.... if not, it may cause image unclearer
As I state in the "Main1" image, I can't explain why the Canon L performs so poorly. It is a very good optical lens; in fact, I now use it and no longer have my Sigma 70-200 EX. But I chose it for the IS, not for optics, because optically they are close. The Sigma EX is a fantastic lens. But in this test, the L for some reason did not focus properly (even with 3 AF attempts and choosing the best one), or it simply cannot perform well at this specific distance. With regards to the test protocol itself, all things were equal and each lenses treated identically. I recommend each person take "Main1" with a grain of salt because I know the Canon is optically stellar otherwise.
Can anyone tell, why did the Canon lens permform so poorly? I think it's a better lens, than the Sigma 70-200
Sam, at this point it's too early to tell. The new 70-200 "DG" isn't out just yet, and I wouldn't expect any huge improvement optically. Unless there is some major improvement, I'm very pleased with my non-DG 70-200 EX. If someone doesn't yet have a 70-200 yet, then the new DG might be worth getting since the price difference will be nominal.
I see you got a chance to put Bigma into a test against the 70-200s. So in your honest opinion do you think its not worth it to replace the Sigma 70-200 for the new DG version? I was thinking of maybe seeing if Sigma would offer a "trade up" for mine. Thoughts?
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