Lens Poll.
J A C S
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Forum Pro
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Posts: 20,544
Re: Lens Poll.
Great Bustard wrote:
J A C S wrote:
Great Bustard wrote:
Let's say Sigma or Canon were to put out a new set of "slow" primes that, stop-for-stop, were every bit as good as the best out there, if not better, have IS, and were a lot smaller and lighter. Would you buy they at the same price point?
For example, consider the following examples:
- A 35 / 2 IS that was every bit as good as the 35 / 1.4L II stop-for-stop, if not better, had 5 stop IS, and not much larger than the current 35 / 2 IS.
- A 50 / 2 IS that was every bit as good as the Sigma 50 / 1.4A, stop-for-stop, if not better, had 5 stop IS, and halfway between the Canon 50 / 1.4 and Sigma 50 / 1.4A in size/weight.
- An 85 / 2 IS that was every bit as good as the Sigma 85 / 1.4A, stop-for-stop, if not better, had 5 stop IS, and halfway between the 85 / 1.8 and 85 / 1.4A in size/weight.
The only way for this to happen is to take an f/1.4 lens and artificially restrict it to f/2.
I think I have to disagree with you on this. I should start a thread on that in the PST forum.
Just to match the vignetting of an f/1.4 lens at f/2 you pretty much need what is called today an f/1.4 lens. Strong vignetting is responsible for weaker and poorer bokeh; one of the reasons f/1.4 lenses are much better at f/2 than f/2 ones (and not so great in terms of quality of the blur away from the center wide open).
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