What 35mm f1.4 to f1.8 lenses would you recommend?

Started Jan 31, 2013 | Discussions thread
blakninja
Regular MemberPosts: 129
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Re: What 35mm f1.4 to f1.8 lenses would you recommend?
In reply to nelsonal, Feb 1, 2013

nelsonal wrote:

Once you have a desired framing the only variable that has a meaningful effect on the blur of the background is the aperture diameter (the focal length doesn't really matter any more--except as a way of essentially croping down the out of focus background). With 35mm you really hit an aperture wall around 20mm (35/1.4 and 1.2 are generally expensive for 25 or 30mm). 50mm gets one inexpensively to 30mm or potentially more expensively to 40mm (58/1.4). Backing up further with a 50mm aperture (135/2.5, 180/2.8, or 200/4) would get you a whole lot more potential blur for your buck.

What does "With 35mm you really hit an aperture wall around 20mm" this mean?

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