01 July 2017

Canon EF Lens Full Time Manual Focus Override

Canon EF Lens Full Time Manual Focus Override
Canon EOS 6D / EF 70-300mm f/4-5.6L IS USM Lens
I often use the lens full time manual focus override function on my Canon USM zoom lens when doing close-up photography with the Canon EOS 6D / Canon EF 70-300mm f/4-5.6L IS USM lens (without a tripod).

Canon Full Time Manual Focus Override
Full time manual focus override is a lens focusing function for fine-tuning focus while in camera / lens Autofocus mode. Its not always possible in the field (without a tripod) to go manual focus when doing close-up photography - for this purpose I gently turn / fine-tune the lens focus ring for pin-point focusing (whilst in AF Mode).


Link to all Canon EF / EF-S / EF-M lenses compatible with the Full Time Manual Focus Override function - View>>

When to use Full Time Manual Focus Override

  • Fine-tuning focus when in AF Mode 
  • During close-up photography (not on tripod) 

Canon Equipment

  • Canon EOS 6D
  • Canon EF 70-300mm f/4-5.6L IS USM Lens
  • Canon EF25 II Extension Tube

Canon EF 70-300mm f/4-5.6L IS USM Lens Focus Ring
Canon official nomenclature showing the focus ring. Most Canon lenses will have the focus ring just behind the the front lens element, but with the Canon EF 70-300mm f/4-5.6L IS USM lens it is located more towards the back of the lens.


(Click to Enlarge)
Canon EF 70-300mm 70-300mm f/4-5.6L IS USM Lens Showing the Focus Ring
Canon EF 70-300mm f/4-5.6L IS USM Lens

Exposure / Lens Settings
  • M Mode: f/5 - 6.3 
  • ISO 100 - 2500
  • Shutter Speed 1/500
  • Lens AF / IS on

Handheld / Focal Length: 170-300mm

Shooting location / Conditions

Table Bay Nature Reserve / Woodbridge Island, Cape Town. Sunny early morning


(Click to Enlarge)
Canon EF Lens Full Time Manual Focus Override
Canon EF Lens Full Time Manual Focus Override Source

Canon EF Lens Full Time Manual Focus Override
Canon EF Lens Full Time Manual Focus Override Source

Canon EF Lens Full Time Manual Focus Override
Canon EF Lens Full Time Manual Focus Override Source

Canon EF Lens Full Time Manual Focus Override
Canon EF Lens Full Time Manual Focus Override  Override

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