Lenses

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Cons: Low-light performance is not always on par with some of its competitors such as the Sony G lens.

Pros: Excellent value for money. The lens is sharp across a wide range - from f3.5 to f18, with its best performance on both SLT A-77 and A-580 at f8 to f11. It also works very nicely when used in a manual focus configuration.

Summary: Highly recommended - and by comparison to the Sony G lens, much better value for money. Very rigid construction and almost 0 barrel distortion. Gives excellent results with almost any filter system ( I use Lee).

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Cons: Nervous bokeh from 135 to 200mm, AF tends to be slower and/or inaccurate in low light scenes, vignetting at 200mm f/2.8

Pros: nice construction, fantastic Q/P ratio, excellent resolution at f/2.8 in 70-135mm range. It's recommendend to stop at f/4 when using at 200mm.

Summary: Full frame camera Nikon D700

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Cons: Some kind of AF slower...

Pros: Price, optics

Summary: I think this is a big lense for the price...2,8...70-200 and just like i use the sony A77 a can't use the 1,4 and 2 magnify...to get...600mm

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Cons: slow AF unless in bright light. a little noisy too. AF is hunting in low light

Pros: excellent IQ with pro results. solid build quality even w/out sealing.

Summary: bad for fast moving subjects. excellent for portraits.

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Cons: Slow & Noisy AF, hunting AF, AF is a pain in the neck from moderate to low light.

Pros: sharp throughout the focal length from f4 and f5.6. decent macro capability. good built quality. nice bokeh. low distortion.

Summary: excellent for portrait, bad for sports or fast moving subjects due to the slow AF. a good rival for canon 70-200 L lenses in term of sharpness.

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Overall

Cons: sometimes hunts for focus

Pros: Harp from center to edges

Summary: I made the right buy. Very pleased with this lens

Build quality
Optical quality
Value for money
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Cons: Noisy AF, sometimes annoying AF "hunting", not tack sharp @ 200/2.8.

Pros: Great optical quality from 70-180mm, feels well built, not as heavy as competitors, decent macro capabilities

Summary: For everyone who can't afford the nikkor 70-200/2.8 VR or canon 70-200/2.8, this is your lens. Yes, the AF isn't the fastest, but this only matters in weak light when it can't lock on and hunts through the focus range. I've shot dogs and horses in motion and the servo AF is fast enough for that :)

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Cons: Focus hunting is annoying; but very easy to put into manual without taking your eye off the subject. Slight non-repeatability of aperture at high settings (f11 and up, 2 to 5 percent variation noticed frame to frame) which can complicate multi-shot segmented panoramas -- you just need to tweak the results OR use low aperture for better exposure repeatability.

Pros: Excellent image quality on par with my Nikon 24-70mm f2.8, almost perfect image illumination with slight falloff wide open and wide angle (about 10 percent darkening). Beautiful bokeh; makes fabulous portraits. Corner illumination seems to actually be better than the Nikkor 70-200 f2.8.

Summary: A delightful lens and the one I use most commonly after my Nikkor 24-70ff f2.8

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Optical quality
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Cons: AF for moving sibject is a hit or miss...; no sealings against dust

Pros: excellent image quality even on max aparture; very good quality around minimum focus distance (0,95m!!!); focus distance;

Summary: AF speed and sound is OK for me, not loud at all, but louder than USM etc... AF for static subject is precise, far better than Sigma i owned, very usable portrait lens IMHO... using it on D700

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Cons: slow and a bit noisy AF. lack of image stabilizer for low light and not moving subject photographing.

Pros: excellent photos quality. sharp and contrast.

Summary: AF is not as slow as snail. able to track subject movement. not as noisy as many do complain. paying at low price for new, i do not expect it to perform like EF70-200mm f/2.8 or AFS70-200mm f/2.8. but it does perform to the photo quality of the both. if you are professional sports photographer, you able to get the EF or AFS lens. other consider-to-buy 70-200mm f/2.8 lens, this the lens for you.