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Old Aug 6, 2003, 8:09 AM   #1
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Default sigma 300-800 ?

Has anyone actually seen this lens:
Sigma 300-800mm F5.6 EX IF APO HSM AutoFocus
http://www.adorama.com/catalog.tpl?o...ku=SG300800EOS

Its price is projected around $4500, which gives a longer reach and cheaper than the 500/600mm F4. It sounds like its massively delayed, though. adorama says it was due out in dec 2002. If I picked up a used 1D, I could use a 1.4x TC with it and retain AF.

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Old Aug 6, 2003, 9:22 AM   #2
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How about this one:
http://www.adorama.com/catalog.tpl?o...ku=SG120300EOS

... available now with f/2.8, almost the same as the above with a 2xTC @ more than 1/2 the cost, accept front filter, and much lighter too!
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Old Aug 6, 2003, 12:34 PM   #3
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Comparing a 600 (with 2x TC) to 800mm isn't "almost the same" when your subjects are regularly 100 feet away.

I hadn't see that lens before, though... interesting for the price. I'd like to believe that sigma could make a 800mm which looks better than a 300mm + 2xTC. Maybe I'm wrong, but I'd be surprised if I wasn't right.

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Old Aug 6, 2003, 2:13 PM   #4
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Oops sorry I misread it like 600mm... No wonder almost 17lb !!!

Didn't they used to make a 3x TC? :lol: :lol: :lol:



http://www.bhphotovideo.com/bnh4/con...=240241&is=REG
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Old Aug 6, 2003, 3:42 PM   #5
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It's probably quite heavy and long, and no exception, you have to carry a tripod. I have a feeling that the AF will probably don't do very well also with the maximum constant aperture of F/5.6. Other than that, I think the material, the construction and the optical performance of this lens will be up to standards and expectations.
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Old Aug 6, 2003, 10:11 PM   #6
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The 100-400 has that at as the max aperture and its Af is quite good.

Maybe you meant that because of its size the AF will have a lot to move and therefor probably not be that good? Makes sense to me, but many things do which then turn out to be wrong.

I'd seen 800mm lenses before, but never one which was AF. It was that which caught my eye... not my interest, really... but it was a novel thing which I hadn't seen before.

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Old Feb 10, 2004, 3:34 PM   #7
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FYI

Just came across this 300-800mm f/5.6 info: http://www.fredmiranda.com/forum/topic/65279

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Old Feb 10, 2004, 4:43 PM   #8
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Thanks for that link. I had set myself to buying the 600 f4 IS, but now you are making me rethink that again. With the money I save, I could almost buy a 1D-II.

Very interesting indeed. I shot pictures of young eagles play fighting over the weekend but I was almost 100 yards away so my little 400mm just couldn't do it justice. Makes me wish I had this beast.

It certainly seems sharp enough, now I just need to know how well the AF works vs the 600's USM.

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Old Feb 10, 2004, 5:00 PM   #9
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Default Sam's CClub

Sam's Club lists the Sigma 120-300 and the 300-800 as a package deal for $6132.00. That is about as cheap as I've seen them listed. That is a whole lot of glass in one purchase.
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Old Feb 10, 2004, 7:14 PM   #10
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Quote:
Originally Posted by eric s
It certainly seems sharp enough, now I just need to know how well the AF works vs the 600's USM.
Here's something you can relate to: " Where I really expected the Sigma to fall behind lenses from the big camera manufacturers like Canon and Nikon was in the area of auto focus. I was particularly interested in the speed at which the lens would acquire auto focus. Well this is where I received my biggest surprise. In a side-by-side comparison with my Canon Series “L” 100-400 zoom, the Sigma focused faster at 400mm than the Canon did. I used identical 10D bodies pointed at the same subject in the same light. The Sigma was noticeably faster. Mind you it slowed down just a touch when I racked it all the way out to 800mm, but just barely. It also hunted a bit in low light, but that could have just been the camera as much as the lens. It certainly doesn’t hunt for focus nearly as much as my Canon 100-400 series “L.”

One of the reasons that the Sigma focuses so quickly is the use of Sigma’s Hyper Sonic Motor (HSM). Similar to Canon’s Ultra Sonic Motor (USM) and Nikon’s Silent Wave (SW) motor technology, the HSM in the Sigma lens allows full-time manual focus override at any time, depending on the focusing mode you have selected on your camera.

Sigma could speed up the already good auto focus performance with a focus limiter switch. But at this price point you can’t have everything."
http://www.photofocus.com/zine7/sigma.html

... and some food for thought here as well for the Nikon fan:
http://www.mdougherty.com/100-THEPHO...00-800-htm.htm

:lol: :lol: :lol:
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