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Old Nov 19, 2003, 8:12 AM   #1
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Default D100 and large telephoto lenses

Does anyone have any experience of using large telephoto lenses with the D100 ? I'm thinking here of 600 to 800 mm.
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Old Nov 19, 2003, 4:58 PM   #2
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I know people that do, but I haven't personally. What's the question?

Also, if you're a member over at www.naturephotographers.net, I know there are lots of 500 & 600 mm lenses floating around that site. How many are attached to D100's is the only question.

Eric
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Old Nov 20, 2003, 2:22 AM   #3
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Have you looked into the Sigma 300-800mm f/5.6 HSM? It's a cheaper alternative to Nikon's prime 400mm, 500mm, or 600mm, and is more versatile as well. Outdoor Photographer has an article on that lens on their December issue.
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Old Nov 20, 2003, 9:45 AM   #4
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I've been wondering about that lens for my 10D. I'll have to see if I can find a copy of that mag.

Anyone out there use this lens? Know anything about it? I have heard that Popular Photography liked the lens. I just have a hard time believing it's as good as I've been told... 600mm f4 lenses are amazingly sharp, so how does it really compare to them?

Eric
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Old Nov 20, 2003, 10:43 AM   #5
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FYI


http://www.photofocus.com/zine7/sigma.html
http://www.mdougherty.com/100-THEPHO...00-800-htm.htm
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Old Nov 20, 2003, 11:50 AM   #6
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Help me before I spend more.................
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Old Nov 20, 2003, 11:58 AM   #7
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I can't answer your question specifically relative to D100 but I have had very good results with Sigma zoom lenses on Nikon N70 and Nikon F100. I have a Sigma 28-70mm f2.8 which is excellent and a Sigma 17-35mm f4-5.6 which is very good. There is some distortion on both ends of the zoom range, especially the wide end but it is manageable.

Both lenses are physically quite large and heavy, much heavier than equivalent Nikon lenses.
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Old Nov 20, 2003, 6:05 PM   #8
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I've read that Pop Photo loved the 300-800 in a recent issue. A friend who gets it is going to bring it is. In his words/memory, it's the best long zoom lens they have every tested, and they do very good testing.

When I get my hands on the review, I'll post more info.

checklg,

I completley agree. I would so love to get this lens. I probably will, but at least not until spring. The question is if I use it on my ArcaSwiss B1G or get a Wimberly.... The Wimberly would add even more cost... when does it end?

But if the 500 or 600MM are much better, would I be better off with that and the Canon 1.4TC? Ahhhhhh (Eric runs off holding his head.)

Eric

ps. I put both the 300-800 and 600mm on my Christmas list. Just as a joke, of course.
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Old Nov 24, 2003, 8:04 AM   #9
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Just to follow up on this thread.

I've did some experiments over the weekend tring to work out the equivalent focal lengths of the Sigma 300-800 in comparison with my current Digiscoping set-up.

I did this by comparing images in Photoshop taken with my D100 using a 200mm Nikon telephoto, against photos taken using my CP4500 through the telescope.

Allowing for a factor of 1.5 on the D100 focal length I get a workable telephoto equivalent of 1800 - 3600 mm for my Digiscoping set-up. This is using a 32WW eyepiece in the telescope and between 1 and 2x optical zoom on the CP4500.

In comparison I could get a 900-2400 mm zoom with the Sigma through employing their 2x teleconverter. This would take the Sigma down to f11.

So less reach, but autofocus, improved metering etc.

On balance I'm not going to rush out and buy the Sigma (when was the last time I said something like that ?), but I think that it would fit in the dream list very well (along with the zoom VR !).
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Old Nov 24, 2003, 1:16 PM   #10
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I don't believe you would get AF if you put the 2x TC on the 300-800. AF stops at F5.6 on the D100.

Graham,

What shutter speed do you use with the digiscoping setup? I've considered going that route, and then I swing back to getting a long lens... and then back to digiscoping because of the reach.

For what its worth, I have a Swarovsky 80ATS-HD.

Eric
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