Questions tagged “f stop”

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

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Are f-stops equivalent between large format and 35mm lenses?

large-format f-stop aperture lens-basics exposure

Photography Stack Exchange contributor

4y ago

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Should a depth of field calculator use rounded f-stops or exact values like f/2.828?

f-stop depth-of-field aperture dof-calculator optics

Photography Stack Exchange contributor

4y ago

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139

Do T-stops include vignetting, and how do they relate to f-stops as you stop down?

f-stop lens-transmission vignetting cinema-lenses t-stop

Photography Stack Exchange contributor

7y ago

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111

Why does a lower f-number mean a larger aperture?

f-stop lenses aperture basics exposure

Photography Stack Exchange contributor

7y ago

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Do I need to change exposure when I zoom to a different focal length?

f-stop aperture zoom-lenses focal-length exposure

Photography Stack Exchange contributor

8y ago

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Why do 1/3-stop aperture values look uneven, like f/8, f/9, f/10, f/11, f/13, f/14, f/16, f/18?

f-stop theory aperture basics exposure

Photography Stack Exchange contributor

8y ago

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107

Why doesn’t a zoom lens get darker as you zoom in?

f-stop aperture telephoto zoom-lenses exposure

Photography Stack Exchange contributor

8y ago

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Why does the background look brighter after changing lenses at the same f/2.8 in studio?

f-stop lenses background studio-lighting exposure

Photography Stack Exchange contributor

8y ago

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188

Why does a smaller aperture increase depth of field?

f-stop depth-of-field aperture optics

Photography Stack Exchange contributor

8y ago

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Will an f-stop Ajna or Loka fit a 15-inch MacBook Pro, and which ICU size works for camera gear plus travel items?

nikon camera-bags f-stop backpacks travel-photography

Photography Stack Exchange contributor

9y ago

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122

What’s the practical difference between f-stops and T-stops in video, and why can movie sets look bright at seemingly small apertures?

f-stop depth-of-field video t-stop exposure

Photography Stack Exchange contributor

9y ago

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226

Why are maximum apertures like f/1.4, f/2.8, and f/4 so common in lenses?

f-stop lens-design lenses aperture exposure

Photography Stack Exchange contributor

9y ago

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108

What does the small subscript number next to the f-stop mean on a Sekonic L-478D?

light-meter f-stop sekonic spot-meter exposure

Photography Stack Exchange contributor

9y ago

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149

How does maximum aperture change across a variable-aperture zoom lens?

nikon f-stop lenses aperture zoom-lenses

Photography Stack Exchange contributor

10y ago

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146

Why are cinema lenses rated in T-stops while DSLR lenses use f-stops?

f-stop lenses aperture cinema-lenses t-stop

Photography Stack Exchange contributor

10y ago

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134

Why isn’t an f/1.4 lens brighter than an f/1.8 lens when both are set to f/1.8?

f-stop lenses aperture t-stop exposure

Photography Stack Exchange contributor

11y ago

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136

How low can a lens T-stop go, and how does it relate to very fast f-stops?

f-stop lenses optics cinema-lenses t-stop

Photography Stack Exchange contributor

11y ago

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Why do 60mm and 105mm f/2.8 lenses have the same f-stop if their aperture diameters differ?

f-stop lenses aperture optics exposure

Photography Stack Exchange contributor

11y ago

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186

How does a teleconverter change a lens’s maximum aperture?

f-stop lenses aperture teleconverter exposure

Photography Stack Exchange contributor

11y ago

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135

Why do f-stops change by square roots instead of a linear scale?

f-stop lens-theory aperture basics exposure

Photography Stack Exchange contributor

12y ago

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