Questions tagged “usm”

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

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Are Canon USM and STM lenses compatible with the EOS 550D/T2i?

canonlensesusmeos-550dstm

Photography Stack Exchange contributor

7y ago

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105

Canon EF 35-105mm USM autofocus struggles unless I help the focus ring — what is likely failing?

autofocuscanonusmlens-repairef-lenses

Photography Stack Exchange contributor

8y ago

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138

Is slight focus-ring slippage normal on the Canon EF 24-105mm f/4L IS USM in manual focus?

canonusmmanual-focus24-105mmef-lenses

user74600

8y ago

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210

What’s the difference between Canon STM and USM lenses?

autofocuscanonlensesusmstm

Photography Stack Exchange contributor

9y ago

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123

What is Canon Nano USM, and how does it compare with STM and USM?

autofocuscanonusmstmnano-usm

Photography Stack Exchange contributor

10y ago

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128

Can you manually turn the focus ring in AF mode on Canon L lenses?

autofocuscanonlensesusmmanual-focus

Photography Stack Exchange contributor

10y ago

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154

Why do high-end Canon lenses use USM instead of STM?

autofocuscanonlensesusmstm

Photography Stack Exchange contributor

11y ago

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121

Canon EF-S 17-85mm USM vs 18-55mm STM: which is better at the wide end?

canonlens-comparisonefs-lensesusmstm

Photography Stack Exchange contributor

12y ago

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125

How can I repair a Canon EF 200mm f/1.8L USM with failed focus-by-wire, and where can I find parts?

canontelephoto-lensusmpartslens-repair

Photography Stack Exchange contributor

13y ago

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142

How long do camera lenses typically last, including Canon L and USM lenses?

canoncanon-llensesusmlens-care

Photography Stack Exchange contributor

14y ago

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132

What does USM mean on Canon lenses, and what are the pros and cons?

autofocuscanonlens-featureslensesusm

Photography Stack Exchange contributor

15y ago