Go Back   Steve's Digicams Forums > Digital SLR and Interchangeable Lens Cameras > Canon Lenses

Thread Tools Search this Thread
Old Jul 7, 2007, 10:26 PM   #1
Junior Member
Join Date: May 2007
Posts: 24

At what shutter speed does IS no longer play a role in shooting, just curious.
ST77 is offline   Reply With Quote
Sponsored Links
Old Jul 7, 2007, 10:35 PM   #2
Senior Member
NHL's Avatar
Join Date: Jun 2002
Location: 39.18776, -77.311353333333
Posts: 11,567

It depends on the lens... and your steadiness
-> The rule of thumb is 1 over the focal lenght (some might factor in the crop factor too)

For a 17-70 zoom for example (1/17s at the wide and 1/70s at the tele) - the following shutter speeds would probably make IS redundant:
o 1/30s is adequate for the wide without camera shake
o and 1/100s is OK for the tele end
... this can vary depending on the ability of the photographer, and of-course with theses kind speeds (just like IS) one does not expect to stop any actions either!

Once you selected a speed which can stop motion @ 1/400s or above then probably no IS are required at all for theses shorter zooms.
-> This is why IS is probably more useful at the longer telephoto like the 500mm or 600mm because the shutter speeds are up there already - But then again with theses telephotos they are already so heavy that a tripod is probably required anyway so again I wonder if IS is still useful here...

I shoot with my 500mm handheld with the IS most of the time (if not all the time) switched OFF because of the actions:

NHL is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -5. The time now is 12:23 AM.