这个贴子怎么归类到摄影镜头里了？
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上一张M家zgzn3620 兄珍藏的手动珍品：monilta XD 50周年纪念版[鼹鼠 编辑于 2005-06-15 08:15]

上一张9 Ti吧……

这个帖子毒物太多了。好在都集中一起，看多了，可以相互解毒。

Sigma发表支持Sigma, Canon, Nikon-D, Konica/Minolta and Pentax 接口的
新型DG镜头 APO 70-200mm F2.8 EX DG/HSM
Friday, 20 May 2005  16:20 GMT < Prev Next >

Sigma has announced new addition to its digital optimized DG range of zoom lenses in the form of the APO 70-200mm F2.8 EX DG/HSM. This fast telephoto zoom sports a fixed F2.8 aperture throughout the range, HSM technology for high speed silent focus and four SLD (Special Low Dispersion) glass elements. A new 'digitally optimized' coating is claimed to minimize flare and ghosting when used on a D-SLR, and the lens will be available in Sigma AF, Canon EF, Nikon D, Konica Minolta and Pentax AF mounts.

Press Release:

APO 70-200mm F2.8 EX DG / HSM

Fast maximum aperture telephoto lens optimised for digital SLR cameras.
Four Special Low Dispersion (SLD) glass elements produce excellent image quality throughout the entire zoom range.
New coating and lens design minimise flare and ghost.
Inner focusing and inner zooming systems retain external dimensions for ease of handling.
The HSM models provide silent, high-speed and precise auto-focusing with full time manual focus override.
Sigma Corporation is pleased to announce the launch of the new APO 70-200mm F2.8 EX DG / HSM lens.

This telephoto zoom lens has a large maximum aperture of f2.8 which remains constant throughout the zoom range and it is optimised for digital SLR cameras.
Two pieces of SLD (the special low dispersion) glass in the front lens group and another two in the rear group offer excellent correction of chromatic aberration. High optical performance is demonstrated throughout the entire zoom range.

The new multi layer lens coating and lens design reduce flare and ghost, which is a common problem with digital cameras and also creates an optimum color balance.

An inner focusing system eliminates front lens rotation, making the lens particularly suitable for using the petal-type lens hood supplied and circular polarising filters. Since focusing and zooming do not change its overall length, ease of handling and operation is assured. A rotating tripod mount can be conveniently detached if required.
The Hyper Sonic Motor (HSM) ensures a silent, high-speed AF function as well as full-time manual focusing capability for Sigma, Canon, and Nikon-D mount lenses.

The lens can be used with the 1.4x EX or 2.0x EX Apo Tele Converters (optional), becoming a 98-280mm F4 Autofocus telephoto zoom lens or a 140-400mm F5.6 Autofocus telephoto zoom lens respectively.

Specifications:

Focal Length: 70-200mm
Minimum Aperture: F32
Lens Construction: 17 Elements in 14 Groups
Angle of View: 34.3°- 12.3°
Number of Diaphragm Blades: 9pcs
Minimum Focusing Distance: 180cm(70.8”)
Maximum Magnification: 1:7.8
Filter Size: 77mm
Lens Hood: Petal Hood
Dimensions: Diameter 86.2mm (3.3”) x Length 184mm (7.2”)
Weight: 1270gr/44.7oz
Fittings: Sigma, Canon, Nikon-D, Konica/Minolta and Pentax
SRP: £799.99

NB: The appearance and specifications are subject to change without notice.

[鼹鼠 编辑于 2005-05-29 21:59]

Std. Lenses 50mm Optical Quality
Sigma AF 2.8 50mm Macro EX 4.65 (4) = outstanding!
(Micro-)Nikkor AF 2.8 60mm 4.63 (4) = outstanding!
Minolta AF 2.8 50mm Macro 4.35 (3) = excellent
Canon EF 2.5 50mm Macro 4.34 (4) = excellent
Nikkor AF 1.8 50mm 4.19 (4) = very-good
Pentax SMC FA 43mm f/1.9 Limited 4.17 (3) = very-good
Pentax SMC F 1.7 50mm 4.13 (3) = very-good
Nikkor AI-S 2.8 45mm 4.00 (2) = very-good
Nikkor AF 1.4 50mm 3.98 (4) = very-good
Canon EF 1.4 50mm USM 3.96 (5) = very-good
Canon EF 1.8 50mm II 3.91 (3) = very-good
Minolta AF 1.4 50mm 3.91 (4) = very-good
Canon EF 1.0 50mm L USM 3.64 (3) = good
Pentax SMC FA 2.8 50mm Macro 3.62 (2) = good
Minolta AF 1.7 50mm 3.19 (2) = average
Sigma AF 2.8 50mm Macro 2.69 (2) = sub-average
Fix-focals 80-135mm Optical Quality
Canon TS-E 2.8 90mm 4.72 (2) = outstanding!
Pentax SMC-FA 1.4 85mm 4.65 (4) = outstanding!
Minolta AF 2.0 100mm 4.60 (3) = outstanding!
Canon EF 2.8 100mm Macro 4.57 (5) = outstanding!
Canon EF 2.0 135mm USM L 4.52 (5) = outstanding!
Tamron AF 2.8 90mm SP Macro 4.49 (5) = excellent
Micro-Nikkor AF 2.8 105mm 4.47 (5) = excellent
Canon EF 1.8 85mm USM 4.45 (5) = excellent
Sigma AF 2.8 105mm macro EX 4.42 (5) = excellent
Minolta AF 2.8 100mm Macro D 4.42 (2) = excellent
Nikkor AF 1.8 85mm D 4.24 (3) = excellent
Canon EF 2.8 100mm USM Macro 4.25 (2) = excellent
Canon EF 1.2 85mm USM L 4.12 (3) = very-good
Pentax SMC-FA 2.8 100mm Macro 4.10 (4) = very-good
Nikkor AF 1.4 85mm D 3.96 (3) = very-good
Tokina AF 2.8 100mm Macro 3.92 (5) = very-good
Minolta AF 1.4 85mm G 3.89 (4) = very-good
PentaxSMC-FA 2.8 135mm 3.78 (2) = good
Nikkor AF 2.0 135mm DC 3.77 (3) = good
Canon EF 2.8 135mm Softfocus 3.69 (3) = good
Canon EF 2.0 100mm USM 3.69 (3) = good
Generic AF & Pentax SMC-FA 3.5 100mm Macro
3.43 (5) = good

Tele zooms f/2.8 -210mm Optical Quality
Minolta AF 2.8 70-200m APO SSM G 4.20 (2) = very-good
Minolta AF 2.8 80-200m APO G 4.19 (4) = very-good
Canon EF 2.8 80-200mm L 4.07 (5) = very-good
Canon EF 2.8 70-200mm USM L 4.07 (3) = very-good
Canon EF 2.8 70-200mm USM L IS 4.02 (3) = very-good
Sigma AF 2.8 70-200mm EX (HSM) 4.02 (5) = very-good
Nikkor AF-S 2.8 80-200mm IF ED D 3.98 (4) = very-good
Nikkor AF 2.8 80-200mm IF ED D 3.90 (3) = very-good
Pentax SMC-FA 2.8 80-200mm ED (IF) 3.87 (5) = very-good
Nikkor AF-S 2.8 70-200mm ED-IF VR D 3.67 (2) = good
Tokina AF 2.8 80-200mm AT-X Pro 3.36 (4) = good
Tamron AF 2.8 70-210mm LD 3.35 (4) = good
Generic AF 2.8-4 70-210mm
2.97 (3) = average
Tele zooms -210mm Optical Quality
Canon EF 4.0 70-200mm USM L 4.17 (3) = very-good
Micro-Nikkor AF 4.5-5.6 70-180mm ED 3.87 (4) = very-good
Carl-Zeiss T* AF 3.5-4.5 70-200mm N 3.63 (2) = good
Canon EF 3.5-4.5 70-210mm USM 3.12 (4) = average
Minolta AF 4.0 70-210mm 3.09 (2) = average
Minolta AF 4.5-5.6 70-210mm 2.96 (4) = average
Nikkor AF 4.0-5.6 70-210mm D 2.95 (5) = average
Pentax SMC-FA 4.0-5.6 70-200mm 2.85 (5) = average
Canon EF 4.5-5.6 80-200mm USM 2.77 (3) = average
Nikkor AF 4.5-5.6 80-200mm D 2.72 (3) = sub-average
Nikkor AF 4.5-5.6 75-240mm D 2.54 (4) = sub-average
Canon EF 4.5-5.6 55-200mm USM 2.35 (3) = sub-average
Tamron AF 4.5-5.6 80-210mm 2.10 (5) = poor

支持一下

当偶有这个的时候，不懂得去珍惜，现在也没有什么机会用了，5555

电池纽扣打不开了。

哪位过路的老大，请给救济一点粮票吧！我好为M家多做一点服务工作！！

3

AF SLR LENS TEST GUIDE

鼹鼠的XH还留着干嘛,,,,处理掉处理掉

这个小鼹鼠很好玩

2

你必须承认
你的器材图拍得是比较烂

鱼兄的东西毒
但是片子拍得不够毒