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06-25-2008, 11:37 PM   #1
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Sigma 135-400mm F4.5/5.6 APO DG vs Pentax DA 55-300mm

I can get a hardly used Sigma 135-400mm F4.5/5.6 APO DG for the same price as a new DA 55-300mm and was wondering if anyone had any comments as to which would be best at 300mm.

Thanks.

06-26-2008, 08:41 PM   #2
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No experience with the 135-400, but I like the IQ of the 55-300 so far in the one week I've had it.

The possibly bigger question is do you want to lug that Sigma around, and do you have a good tripod?
06-27-2008, 02:20 PM   #3
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I have the Sigma and find it a great lens for the price. It serves my purpose well. Be on the lookout, the earlier models did suffer a lot with lens creep. However, I have little difficulty with that, and can definitely recommend the Sigma.
This photo taken recently.


This second photo taken with the Sigma lens, with a Tamron 1.4X Converter attached.



I dont have any experience with the Pentax, but what I have seen, it is a pretty recommendable lens as well.
Any questions, dont hesitate.
06-27-2008, 09:11 PM   #4
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I made this post a couple of months back with one.

You'll read a few comments on it there.

06-28-2008, 04:16 AM   #5
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I don't see how these two lenses compete with one another. They are so different size and range. The portability and wider angle of the 55-300mm make it well suited to general photography. The Sigma is more of a specialty lens for long range shooting like sports and nature, and best used on a tripod. The decision on which to get should be mostly based on the intended purpose.

As to which has better IQ at 300mm, I've never heard of a direct comparison. It's pretty well established that the 55-300mm trumps the Sigma 70-300mm APO. Maybe one could find a comparison of the two Sigmas somewhere.

Last edited by audiobomber; 06-28-2008 at 04:28 AM.
06-28-2008, 08:19 AM   #6
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QuoteOriginally posted by audiobomber Quote
The Sigma is more of a specialty lens for long range shooting like sports and nature, and best used on a tripod.
shhhhh, please don't tell my Sigma 135 - 400 that
It may have been on a tripod 5 times in it's life, and hand held more often than I can possibly think of giving me very sweet IQ whenever I do hold it.

Those flower shots in the link I supplied were all hand held.
06-28-2008, 08:47 AM   #7
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QuoteOriginally posted by little laker Quote
shhhhh, please don't tell my Sigma 135 - 400 that
It may have been on a tripod 5 times in it's life, and hand held more often than I can possibly think of giving me very sweet IQ whenever I do hold it.
Well, that does not seem to be a concensus. Sigma 135-400mm f/4.5-5.6 APO Aspherical Reviews
06-28-2008, 09:55 AM   #8
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All those images on my link up there were hand held, and the data is intact.
I can't say weather or not I was using SR on them. I do at times, but don't other times.

In my opinion anyone with a little muscle, and a steady hand should be able to hand hold this lens at lower f-stops.

06-28-2008, 01:07 PM   #9
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Well considering I am hand holding a Pentax K mount 300mm prime that is made of solid metal atm I don't think the Sigma is going to be much problem

Cheers for the replies anyway.
06-28-2008, 03:55 PM   #10
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I am sorry, but I disagree that the Sigma is only suitable for a tripod. Both above shots and indeed 90% of my shots with this lens are hand held. No problem.
Maybe I just fluked it perhaps
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