Questions tagged “fast lenses”

Ask the Unique Photo creator community — gear, technique, post-processing and more.

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101

Why is there an air gap between the lens and a digital sensor instead of index-matched glass or fluid?

lensessensorfast-lensescamera-designoptics

Photography Stack Exchange contributor

5y ago

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2

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106

What is the widest aperture available on a commercially made lens, and why are ultra-fast lenses so hard to design?

lensesaperturefast-lensesopticsgear

Photography Stack Exchange contributor

12y ago

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2

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109

Should off-center AF points still focus correctly with a lens that has field curvature?

autofocussigma-30mmfast-lensescanon-7dfield-curvature

Photography Stack Exchange contributor

13y ago

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2

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111

Which mirrorless camera is best for low-light nightclub photography?

nightclub-photographylow-lightmirrorlessfast-lensessensor-size

Photography Stack Exchange contributor

13y ago

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2

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79

How much does lens vignetting matter for wide-open portrait primes?

lens-performancefast-lensesvignettingprime-lensesportrait-photography

Photography Stack Exchange contributor

14y ago

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2

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178

Why are lenses faster than f/1 so rare, and what changes in their design?

depth-of-fieldlensesaperturefast-lensesoptics

Photography Stack Exchange contributor

15y ago

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67

Do cameras secretly raise ISO with very fast lenses like f/1.4 or f/1.2?

fast-lensesvignettinglens-correctionsisoexposure

Photography Stack Exchange contributor

16y ago

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2

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141

How can I improve manual focus accuracy with a fast f/1.4 lens on a DSLR?

focusingdslrfast-lensesmanual-focuspentax

Photography Stack Exchange contributor

16y ago