Luminous Landscape Forum

Equipment & Techniques => Cameras, Lenses and Shooting gear => Topic started by: vorlich on November 17, 2009, 12:46:41 pm

Title: Canon 70-200 f/4 L
Post by: vorlich on November 17, 2009, 12:46:41 pm

I've just bought my first L lens, and just want to check something:

Is it normal for the focus ring to continue to rotate once it has stopped affecting the focus? This happens turning both clockwise and anti-clockwise, in both MF and AF modes. I assume this is to allow the focus ring to be used even in AF mode.

No lens I've had previously, behaved like this...  

Title: Canon 70-200 f/4 L
Post by: francois on November 17, 2009, 12:55:24 pm

Quote from: vorlich

I've just bought my first L lens, and just want to check something:

Is it normal for the focus ring to continue to rotate once it has stopped affecting the focus? This happens turning both clockwise and anti-clockwise, in both MF and AF modes. I assume this is to allow the focus ring to be used even in AF mode.

No lens I've had previously, behaved like this...

Yes it's normal. Don't worry. It's because it uses the USM system. Other lenses than "L"s also use this system.

Title: Canon 70-200 f/4 L
Post by: Ken Bennett on November 17, 2009, 01:00:36 pm

Yes, that is normal on many Canon USM lenses.

Title: Canon 70-200 f/4 L
Post by: vorlich on November 17, 2009, 01:00:48 pm

Quote from: francois

Yes it's normal. Don't worry. It's because it uses the USM system. Other lenses than "L"s also use this system.

Perfect, thanks! Somebody please delete this thread to spare my ego  

Title: Canon 70-200 f/4 L
Post by: francois on November 17, 2009, 02:02:06 pm

 

Title: Canon 70-200 f/4 L
Post by: Jonathan Wienke on November 18, 2009, 07:55:35 am

Real Photographers do RTFM...

Title: Canon 70-200 f/4 L
Post by: vorlich on November 18, 2009, 08:46:08 am

Quote from: Jonathan Wienke

Real Photographers do RTFM...

Jonathan, as a long time lurker, I've lost count of the amount of times you've posted f**kwit comments on threads when it'd be better just to STFU and move along. I have RTFM, and could see no mention of this...thanks for your pearls of wisdom though...