Don Haines said:We all know not to leave the IS turned on when using a tripod... This is what happens when you do not.
Shot with a 7D2 and a Tamron 150-600, 10 seconds at ISO3200. First picture with IS ON, second with it OFF.
Don Haines said:We all know not to leave the IS turned on when using a tripod...
good point!neuroanatomist said:Don Haines said:We all know not to leave the IS turned on when using a tripod...
Do we? Most Canon lens IS systems are tripod-sensing, so there's no need to turn IS off with the switch. In the case of supertele lenses, Canon's IS system actively damps mirror and shutter vibration when on a tripod. Personally, I've tested IS on vs. off with my 100L and 600/4 II on a tripod, leaving IS set to ON has no detrimental effect, provided you allow the ~0.5 s necessary for the system to become fully active (i.e. don't just mash down the shutter).
So while your example is good to know for owners of the Tamron 150-600, I don't believe that advice is generically applicable to all lenses.
Don Haines said:neuroanatomist said:Don Haines said:We all know not to leave the IS turned on when using a tripod...
...leaving IS set to ON has no detrimental effect, provided you allow the ~0.5 s necessary for the system to become fully active (i.e. don't just mash down the shutter).
I should also mention that the shutter was triggered by a remote so I would not be causing vibration by pressing the shutter button.... using the timer will accomplish the same....
I turn Mirror Lockup on and set the camera to the 10 second timer and trigger it with the remote. When the remote trigger is pressed, the mirror moves into position and the camera has 10 seconds to stabilize. I use my heavy tripod and a gear head to minimize vibrations from the camera support and try to stand as still as possible.neuroanatomist said:Don Haines said:neuroanatomist said:Don Haines said:We all know not to leave the IS turned on when using a tripod...
...leaving IS set to ON has no detrimental effect, provided you allow the ~0.5 s necessary for the system to become fully active (i.e. don't just mash down the shutter).
I should also mention that the shutter was triggered by a remote so I would not be causing vibration by pressing the shutter button.... using the timer will accomplish the same....
A remote trigger could be an issue – the 'mashing down' isn't only about mechanical vibration, it's about not allowing time for IS to engage. In my testing with the 100L, having IS on and just pressing the shutter all the way down, without a ~0.5 s half-press, was significantly worse than handheld with IS off. I surmise that when IS starts up, the elements 'jump around' a bit before settling down and stabilizing the image. So, even when using a remote trigger, it is important to half-press the button for a brief period before releasing the shutter. Or use the self timer as you suggest, which will keep IS active during the countdown.
neuroanatomist said:Don Haines said:We all know not to leave the IS turned on when using a tripod...
Do we? Most Canon lens IS systems are tripod-sensing, so there's no need to turn IS off with the switch. In the case of supertele lenses, Canon's IS system actively damps mirror and shutter vibration when on a tripod. Personally, I've tested IS on vs. off with my 100L and 600/4 II on a tripod, leaving IS set to ON has no detrimental effect, provided you allow the ~0.5 s necessary for the system to become fully active (i.e. don't just mash down the shutter).
So while your example is good to know for owners of the Tamron 150-600, I don't believe that advice is generically applicable to all lenses.
IglooEater said:Do you have a list of canon lenses that are and are not tripod sensing? Il still turning IS of on tripod ´cause I'm not sure if my lenses have it or not.
neuroanatomist said:IglooEater said:Do you have a list of canon lenses that are and are not tripod sensing? Il still turning IS of on tripod ´cause I'm not sure if my lenses have it or not.
It's a short list, only the 1st gen IS lenses – four in total, released from 1995 to 1998:
- EF28-135mm f/3.5-5.6 IS USM
- EF75-300mm f/4-5.6 IS USM
- EF100-400mm f/4.5-5.6L IS USM
- EF300mm f/4L IS USM
The 75-300 IS was discontinued, replaced by the 70-300 IS (non-L) in 2005, and the 100-400 was recently updated to the MkII. The other two are still 'current'.
This is what I like about this forum. I am always learning stuff!neuroanatomist said:IglooEater said:Do you have a list of canon lenses that are and are not tripod sensing? Il still turning IS of on tripod ´cause I'm not sure if my lenses have it or not.
It's a short list, only the 1st gen IS lenses – four in total, released from 1995 to 1998:
- EF28-135mm f/3.5-5.6 IS USM
- EF75-300mm f/4-5.6 IS USM
- EF100-400mm f/4.5-5.6L IS USM
- EF300mm f/4L IS USM
The 75-300 IS was discontinued, replaced by the 70-300 IS (non-L) in 2005, and the 100-400 was recently updated to the MkII. The other two are still 'current'.
neuroanatomist said:A remote trigger could be an issue – the 'mashing down' isn't only about mechanical vibration, it's about not allowing time for IS to engage. In my testing with the 100L, having IS on and just pressing the shutter all the way down, without a ~0.5 s half-press, was significantly worse than handheld with IS off. I surmise that when IS starts up, the elements 'jump around' a bit before settling down and stabilizing the image. So, even when using a remote trigger, it is important to half-press the button for a brief period before releasing the shutter. Or use the self timer as you suggest, which will keep IS active during the countdown.
RBC5 said:So on the new lenses that have a 3rd option for IS - it doesn't engage while focusing, only when the shutter is pressed - how exactly does that engage? It must be pretty fast. I wonder if that would work on a tripod...or if a remote makes a difference... I've never used a lens with that setting.
neuroanatomist said:RBC5 said:So on the new lenses that have a 3rd option for IS - it doesn't engage while focusing, only when the shutter is pressed - how exactly does that engage? It must be pretty fast. I wonder if that would work on a tripod...or if a remote makes a difference... I've never used a lens with that setting.
When IS is off, the IS elements are parked and the gyroscopic sensors are off. As I understand it, with Mode 3 IS the gyros are on and the elements are unlocked but held in the centered position by the motors. Thus, it can start stabilizing near instantaneously.