Av and TV mode.

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“It's kind of fun to do the impossible.” - Walt Disney.
Equipment: Tokina 12-24mm, Canon 40mm 2.8, Tamron 17-50 2.8 XR Di, Canon 18-55mm, Canon 50mm 1.8, Tamron 70-300VC / T3I and 60D

Frodge wrote in post #17891830
Is there a way to set a minimum or maximum I so in these modes in custom functions? So as an example let's say I'm in av and meter off several areas and determine I don't need to go higher than 1600 iso in any circumstances for the shutter speed I need. Can I set the maximum Iso as 1600 so the camera doesn't decide to increase Iso and increase shutter when not necessary?

Certain cameras have the ability to set limits (shutter speed limits, etc). I'm not sure the 60D can do it.

There may be options in Magic Lantern however, for what you seek.

Very best,

My Flickr :: My Astrobin

Frodge wrote in post #17891830
Is there a way to set a minimum or maximum I so in these modes in custom functions? So as an example let's say I'm in av and meter off several areas and determine I don't need to go higher than 1600 iso in any circumstances for the shutter speed I need. Can I set the maximum Iso as 1600 so the camera doesn't decide to increase Iso and increase shutter when not necessary?

Answers are somewhat dependent on body, I believe. Which body are you using?

- Eric S.: My Birds/Wildlife (R5, RF 800 f/11, Canon 16-35 F/4 MkII, Canon 24-105L f/4 IS, Canon 70-200L f/2.8 IS MkII, Canon 100-400L f/4.5-5.6 IS I/II)
"The easiest way to improve your photos is to adjust the loose nut between the shutter release and the ground."

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“It's kind of fun to do the impossible.” - Walt Disney.
Equipment: Tokina 12-24mm, Canon 40mm 2.8, Tamron 17-50 2.8 XR Di, Canon 18-55mm, Canon 50mm 1.8, Tamron 70-300VC / T3I and 60D

Bas
Flickr

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“It's kind of fun to do the impossible.” - Walt Disney.
Equipment: Tokina 12-24mm, Canon 40mm 2.8, Tamron 17-50 2.8 XR Di, Canon 18-55mm, Canon 50mm 1.8, Tamron 70-300VC / T3I and 60D