Questions tagged “lens basics”

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

0

votes

2

answers

101

Does a lens’s zoom ratio match the change in subject size on the sensor?

magnificationfield-of-viewlens-basicsfocal-lengthzoom-lens

Photography Stack Exchange contributor

4y ago

0

votes

2

answers

89

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

large-formatf-stopaperturelens-basicsexposure

Photography Stack Exchange contributor

4y ago

0

votes

2

answers

113

Do all 300mm lenses give the same reach, and what does “f/4-5.6 IS USM” mean?

bird-photographytelephotolens-basicscanon-efbeginner

Photography Stack Exchange contributor

5y ago

0

votes

2

answers

141

What changes when you focus a fixed-focal-length lens, and how does that relate to depth of field?

depth-of-fieldprime-lensopticslens-basicsfocus

Photography Stack Exchange contributor

7y ago

0

votes

2

answers

117

What does a lens’s minimum focus distance actually mean if depth of field extends closer?

depth-of-fieldminimum-focus-distanceopticslens-basicsmanual-focus

Photography Stack Exchange contributor

7y ago

0

votes

2

answers

107

Why can an f/2.8 lens focus faster than an f/5.6 lens even if both are set to f/5.6?

nikonautofocusaperturetelephoto-lenseslens-basics

Photography Stack Exchange contributor

7y ago

0

votes

2

answers

272

What’s the difference between focal length, zoom, and magnification?

magnificationtelephotolens-basicsfocal-lengthzoom-lens

Photography Stack Exchange contributor

12y ago

0

votes

2

answers

118

Why does f-number depend on focal length, and do longer lenses collect more light at the same f-stop?

aperturef-numberlens-basicsfocal-lengthexposure

Photography Stack Exchange contributor

14y ago

0

votes

2

answers

134

How can a prime lens focus at different distances if its focal length is fixed?

prime-lensopticslens-basicsfocusfocal-length

Photography Stack Exchange contributor

15y ago

0

votes

2

answers

145

What is the origin of the term “f-stop” in photography?

f-stopphotography-termsaperturelens-basicsexposure

Photography Stack Exchange contributor

15y ago

0

votes

2

answers

116

What is a prime lens, and what are its advantages over a zoom?

lensesprime-lenslens-basicsfocal-lengthzoom-lens

Photography Stack Exchange contributor

16y ago