Canon 24-105 F4L IS Question

[chilliz]

I have recently bought the Canon 24-105L lens and it focussed manually when the switch is in the autofocus position ie. switching between auto and manual makes no difference and I wondered if this is normal. Just to clarify further, the auto focus only works in auto mode as you would expect.
Cheers in advance.

 

[IanFlaherty]

You mean like the 70-200mm f/4 L where you don't need the switch to be set to MF to manual focus? Sounds right to me. I believe it's a feature of quite a few lenses.

 

[tbm]

Yup, this is all good - it's known as "Full time manual" focussing. Useful for tweaking focus with the shutter button halfway down, should you so desire

 

[chilliz]

That`s a releif, thanks guys, for the quick reply.

 

[bartoszwozniak]

I think that what you are talking about is 'Manual focus override'. This is a very useful feature if you're autofocus fails and you need to make quick adjustments. For more details look here:
http://photo.net/canon-eos-digital-camera-forum/00KV9Y

This is of course perfectly normal for these lenses and it is not faulty or anything.

Hope I helped
Bart

 

[malla1962]

You mean like the nifty fifty where you don't need the switch to be set to MF to manual focus? Sounds right to me. I believe it's a feature of quite a few lenses. My 70-200mm f/4 L does the same come to think of it.

The nifty fifty does not have FTM and may damage IT if manual focusing in AF mode.

 

[IanFlaherty]

Ah cheers Malla, not used it for a while so couldn't remember for sure. Must have been the 70-200mm I was thinking of. Will edit my post.

 

[maarten.dhaese]

FTM is a feature that is usually reserved for high-end lenses. It's very useful to have, especially on wide aperture lenses (2.8 and below) because you can autofocus first and then manually adjust if necessary without having to flick a switch first.

 

[pearce_jj]

....but don't try it in servo mode!

 

[JBuk]

it's a feature of the lens , very handy too