The fast-lenses tag has no wiki summary.
5
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2answers
304 views
What causes these green dots in my image?
I just received a 35mm f/1.8 DX lens for my Nikon D50 for Christmas, and took some shots where the lights on the tree were the main source of illumination. Almost all of them exhibit very prominent ...
3
votes
9answers
688 views
Why would a serious photographer buy a lens slower than f/2.8?
It seems to me that the general idea is that, once you start getting to become a decent photographer and are really moving beyond your kit lenses, you shouldn't be looking at anything slower then ...
6
votes
4answers
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Is it difficult to focus on 1.4F prime lens, and if it is how to counter that?
Does difficulty in focusing have anything to do with 1.4F (Nikon G)?
Will it be still difficult if I use manual focus?
Is auto focus too slow?
Is there a way to counter it?
This example photo (from ...
10
votes
3answers
2k views
Are the Canon 15-85mm + 50mm f/1.8 adequate substitutes for the 17-55mm f/2.8?
The EF-S 15-85mm lens is a relatively recent lens, and I haven't seen too many recommendations on it thus far. However, most of the reviews have been very positive and the lens is said to be optically ...
11
votes
4answers
2k views
What is a “fast” lens?
I've been reading lots of camera reviews lately and have ran across several references to "fast" lenses.
What exactly is a fast lens and what are its advantages compared to other lenses?
19
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5answers
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What is special about lenses with f-number < 1?
Talking about fast lenses, Wikipedia mentions
Nikon TV-Nikkor 35mm f/0.9-Fastest Nikon lens ever made
Why don't, for example, f/0.5 lenses exist?
Is there some special construction that comes ...
14
votes
8answers
3k views
Do DSLRs play games with ISO when used with fast lenses?
This article at Luminous Landscape claims that Nikon, Canon, and Sony silently boost ISO when their cameras are used with very fast lenses (f/1.2 and f/1.4 principally), the implications being that ...
21
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6answers
2k views
For sports photography, should I use image stabilization or a faster lens?
For sports, I know that a faster lens would usually be considered more important than image stabilization, but what if, after selecting your shutter speed, your camera is picking apertures that don't ...
