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Image Stabilizer Question ...
Feb 10, 2012 15:05:34 #
Recently got some information from a flash class that was told NOT to use IS if shutter speed is more than 1/30 ...something in the motor of IS that actually shakes the final image --- have you seen this - have you experienced or heard anything like this???
Feb 10, 2012 15:13:35 #
Feb 10, 2012 15:33:19 #
Bill Pinto
Loc: Metairie, Louisiana
The don't use the IS on the tripod, because the image stabilizing mechanism keeps looking to stabilize the image and keeps on shifting, that is what the tripod is doing they fight each other. On long exposures. The IS on using flash is a misnomer, when you you flash the shutter duration is the speed of the flash and most of the modern sync at 125 to 250 th of a second.
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Feb 10, 2012 16:30:17 #
photomom wrote:
Recently got some information from a flash class that was told NOT to use IS if shutter speed is more than 1/30 ...something in the motor of IS that actually shakes the final image --- have you seen this - have you experienced or heard anything like this???
If you are shooting at 1/30sec then you should be using a tripod no matter what. Never use IS, VR, OS on a tripod as it can ruin your image while looking for shake to stabilize.
Feb 10, 2012 22:55:01 #
I have noticed that with my Canon 7D that autofocus takes longer to lock on to a moving subject when I have IS on and I am panning a flying bird. It makes no difference if I use the IS setting on the lens that is supposed to be for panning. It seems to hunt more before it finally gets the subject in focus. Part of the problem is that no one told the birds that they had to fly in a level straight line for me. So, I'm not really panning like I would be for a moving car or runner. I am usually shooting at 1/2000 with my 500mm. That may be one of the situations they are talking about. Anyone else notice a problem with AF when using IS when tracking an erratically moving subject?
Feb 11, 2012 09:18:29 #
Jerry Green
Loc: Huntsville, AL
birdpix wrote:
I have noticed that with my Canon 7D that autofoc... (show quote)
I have read in bird photography forums to turn off the IS or VR when shooting at high speeds for flying birds even handheld.
Feb 11, 2012 09:57:32 #
Wow! this is interesting. I have used my tripod to take group photos for example. I never thought to turn off the I.S. My photos seemed to look good. I do know to turn off the I.S. when doing long exposures. This only makes sense.
Are you people saying to turn off the I.S. even when shooting a still life or an outside macro shoot of a flower at a high shutter speed when using a tripod? If so, I will do it! I am dead serious.
I have learned so much on this forum since I joined last September. People who have been on the UHH have probably noticed how I have evolved as a shooter between then and now.
It sounds like a good habit to get into.
But at Higher shutter speeds is it really necessary to turn off the I.S. when using a tripod?
Are you people saying to turn off the I.S. even when shooting a still life or an outside macro shoot of a flower at a high shutter speed when using a tripod? If so, I will do it! I am dead serious.
I have learned so much on this forum since I joined last September. People who have been on the UHH have probably noticed how I have evolved as a shooter between then and now.
It sounds like a good habit to get into.
But at Higher shutter speeds is it really necessary to turn off the I.S. when using a tripod?
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Feb 11, 2012 10:06:14 #
ALWAYS turn off your IS when on a tripod, regarless of shooting conditions or settings.
Feb 11, 2012 10:09:10 #
I have read that turning off the IS was more important on older is lenses, but the newer lenses with IS, this is not important (like the new Canon 70-200 2.8 version). Is this true?
Feb 11, 2012 10:12:26 #
Jerry Green
Loc: Huntsville, AL
But at Higher shutter speeds is it really necessary to turn off the I.S. when using a tripod?[/quote]
If you read the manual that comes with an IS or VR lens it will probably tell you to turn off the stabilization when on a tripod. At a high shutter speed on a tripod you do not need it. You also have the motor running using up the battery and for fast moving subjects there may be a milisecond delay in aquiring focus. Some of the high end telephoto lens have a "tripod mode" or "tripod detection" but even then I would recommend turning it off. I do use the VR when on a tripod on days when the wind is high and the lens and tripod are not steady. Both the Canon POTN and NikonCafe forums have a lot of discussion on this. I recommend both regardless of what camera you shoot for great photograph information.
If you read the manual that comes with an IS or VR lens it will probably tell you to turn off the stabilization when on a tripod. At a high shutter speed on a tripod you do not need it. You also have the motor running using up the battery and for fast moving subjects there may be a milisecond delay in aquiring focus. Some of the high end telephoto lens have a "tripod mode" or "tripod detection" but even then I would recommend turning it off. I do use the VR when on a tripod on days when the wind is high and the lens and tripod are not steady. Both the Canon POTN and NikonCafe forums have a lot of discussion on this. I recommend both regardless of what camera you shoot for great photograph information.
Feb 11, 2012 11:08:42 #
steve wrote:
All I've heard ,is don't use IS if on a tripod. Actually makes the image blurred.
It depends on the lens. Some lenses can sense they are on a tripod and still work against residual vibrations caused by the USM. To know for sure, read a professional review of the lens, or look at the documentation that came with the lens, if you still have it.
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Feb 11, 2012 14:48:47 #
From what I have read, you should turn off the IS on a tripod. It is also suggested that using the IS in fast shutter speed situations is not helpful either. Due to the fast shutter speed to freeze the action, IS is not needed but used for low shutter speed where camera shake is a problem with hand held shots. I have done my own experiments and have seen that it definitely helps in low shutter speeds but as you get to shutter speeds of 1/250 and above it doesn't seem to make a difference if its on or not. The pictures are comparable.
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