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Sigma 1000mm f8 APO

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ffrolvaag View Drop Down
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Post Options Post Options   Quote ffrolvaag Quote  Post ReplyReply Direct Link To This Post Posted: 10 January 2019 at 01:44
Originally posted by stiuskr stiuskr wrote:

I have no experience at all shooting at such extreme focal lengths but it seems like you'd get best results in the field with manual focussing. And yeah, a rock solid tripod and head will be a must but a nice fat bean bag would work well too, especially for testing.

I agree, MF will probably be the best policy with something this long. The AF like many longer lenses isnít that fast even with the a99ii. However, I will be curious to see how accurate AF is at that distance and how much hunting it will do in proper light.

a900, a700, 5600hs, 1200 (w/MFC-1000), 3x converted f1.2 (Rokkor 58, Nikon 50 ais, and Pentax 50), 85mm f1.4, 100mm f2.8, 70-400G, and way too much other stuff to mention

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QuietOC View Drop Down
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Post Options Post Options   Quote QuietOC Quote  Post ReplyReply Direct Link To This Post Posted: 12 January 2019 at 00:51
Listing in the 1993 Sigma Lens Catalog:

APO 1000mm F8 Zen

World's first autofocus 1000mm super telephoto lens offering sharp images and excellent maneuverability.

The Sigma APO 1000mm F8 ZEN is the world's first autofocus 1000mm super telephoto lens and the smallest in its class. It lets you fully enjoy the world of super telephoto potography[sic] including shooting closeups of distant panoramas, and delivers startling "compressed" perspective effects as well. Its internal focusing system enables you to respond quickly to your subject to shoot newspaper type action photos: outdoor sports, and wildlife. Chromatic aberration, which is characteristic of a super telephoto lens, has been reduced to a minimum by using special optical design and two pieces of SLD (Special Low Dispersion) glass for the front elements. This provides sharp, clear images at every aperture. It uses rear insertion type filters that can be changed in a moment. The exclusive "ZEN" matte finish provides a sure grip, prevents reflections and resists scratches.

Corresponding AF Mount: Sigma Mount, Minolla Mount, Nikon Mount and Canon Mount.
Sony A68 A6000 A7II LA-EA3 LA-EA4 MC-11
Minolta Maxxum 600si
Pentax Q7 5-15 15-45/2.8
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krabster View Drop Down

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Post Options Post Options   Quote krabster Quote  Post ReplyReply Direct Link To This Post Posted: 12 January 2019 at 13:08
Nice catch.
As have been mentioned already, the use of these lenses comes with a lot of limitations. It sure is not a walk around lens . Only to use with a sturdy (and expensive) tripod. In low light almost unusable, and most of the time no AF.
There is someone on Flickr with some testshots. I was not impressed by the sharpnes of the pictures. And the pictures looked a bit soft to me. In warm and bright conditions the vibration of the air begins to kick in and causes unsharp pictures.
But a sure like to own one !!
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