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Old Sep 25, 2007, 8:09 PM   #1
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Anyone have any experience with, or hear anything about, results from an oldSigma 400mm F5.6 APO lens for Pentax? This is the "grey" one, I believe from around the 70's. I found one on eBay and was curious........
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Old Sep 26, 2007, 4:03 PM   #2
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as long as it's the APO version you'll probably like it if you get it for a decent price.. the macro and AF versions are also fairly good. the non-APO version isn't worth the cost of a paper weight. what's the price??

roy
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Old Sep 27, 2007, 8:57 AM   #3
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http://www.pbase.com/cameras/sigma/400_56_apo

http://www.mflenses.com/gallery/v/ja...ma_400mm_f5_6/

Looks acceptable.

Tom
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Old Sep 27, 2007, 1:39 PM   #4
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robar wrote:
Quote:
as long as it's the APO version you'll probably like it if you get it for a decent price.. the macro and AF versions are also fairly good. the non-APO version isn't worth the cost of a paper weight. what's the price??

roy
$355.00
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Old Sep 27, 2007, 1:43 PM   #5
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TDN wrote: Thanks,

Problem is, those links are for a much newer version of the lens. This one is the old, "gray" version. Still an APO, though.


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Old Apr 21, 2008, 10:03 PM   #6
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I've got a couple of different topics to cover here.

First of all, I did buy this lens on eBay back in September. Didn't use it for quite a while. The focus ring is a little loose, but other than that it's in pretty good shape. The glass is very good. I finally tried it out and was very happily suprised. I think it was well worth the $355.00 I paid for it.

The first shots I took were of these Rufous Hummingbirds.Agood examplerelated to the post on the Pentax dSLR forum on freezing hummingbird wings. These shots were taken at ISO 400, f5.6, 1/2000 sec., and, of course, 400mm.




Very short DOF here; the head is out of focus, but the wings are pretty clear:






I love the way the light actually shines through their wings:





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Old Apr 22, 2008, 6:54 PM   #7
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very nice!! the non-APO version i had could never do this. it was a real POS..

roy
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Old Apr 22, 2008, 7:02 PM   #8
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Need a little more light for a higher f/stop to increase DOF. Feeder being so mushy distracts.. But I know you know that....How far away from the feeder were you?



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Old Apr 22, 2008, 7:46 PM   #9
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i don't think so. i think Ev was right on the money to get your attention away from the feed.. a little levels/curves might help

roy
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Old Apr 24, 2008, 4:14 PM   #10
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These last 2 posts just go to show how subjective of a thing photography really is....

I agreed with Dawg when I went back and looked at the feeder specifically, but then robar's point is good, too! I think that the blur on the feeder is not so much the issue as is how bright it is.

To answer Dawg's question about the distance, the feeder is about 9-10 feet from our kitchen window where I normally take my hummer shots, but the min. focusing distance on this lens is 4m (~12ft), so I had to actually back away from the window toward the middle of the kitchen.


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