monopods and telephoto lenses

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Not sure if the 70-200 f/4 IS has tripod detection on. Most lenses you need to turn off IS because otherwise it keeps trying to correct movement that isn't occurring. Some with the panning mode can be left on like that, which is especially useful for sports photographers or birders who are panning quite a bit.
 
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May 31, 2011
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Run a few tests... at noon on a cloudless day. Theoretically, the ambient light won't change too much over the 20 minutes that you are running the tests. Frame up your subject as comparable as you can so you can simply roll through the images and compare them all at relatively the same point. So if you are taking a picture of a barn, compose it so that the entire barn is in the frame with the top of the barn at the top of the image. Then start off by hand holding... then go to the monopod, then go to a tripod with a wired release... or a 2 or 10 second delay. Then compare with and without IS. I have my money on the tripod without IS engaged... but that should be a given.

Also, sometimes you might be the deciding factor. If you are walking/hiking towards your subject, your heart may be beating to the point to where your entire body is shaking just a bit and while you may not notice it, it is recognizable in your shots.
 
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hello again
I`m pleased none of the replies questioned the use of IS.
I tried some experiments focussing on an aerial about 20m away. Keeping the ISO and aperature constant and only varied the shutter speed.
At 1/100s there was a bit of a blur. At 1/200s it seemed fine.
I thought that with the IS I could have got away with 1/100s but it seems not. I can definately see the image moving from side to side before I press the shutter.
Must be an age thing?
Any further comments would be most useful.
 
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Oct 16, 2010
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I've the same lens and occassionally use it with a monopod. I start to worry when the shutter speed falls to 1/60s as I know the chances of a sharp photo aren't that high. I sometimes keep IS on, sometimes it is off - this doesn't seem to make a noticeable difference.

Most of my sharpness issue relate to the subject moving (ie my shutter speed not being fast enough to freeze the action). That's not your problem, too?

For around $15 you can pick up a tripod collar for the lens. I don't have one, but I've often thought the camera/lens combo would be more stable with one. Eventually I'll probably pick up one to see if it is of any use. At a minimum, it will at least confuse my friends - They'll be wondering if I have the f/2.8 but won't quite understand why it looks so slim.
 
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DavidR said:
The comment from Hillsilly made me think about a tripod collar to help the balance. After looking at reviews I decided to buy the Canon AIIW from Wex in the UK (much much cheaper than Amazon!!). Once I`ve tried it I`ll add my comments about its usefullness.

Ah, this may be the issue - the camera isn't balanced on the monopod. Use the tripod collar on the lens for your monopod - not the camera body. Let us know how it goes.
 
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hello again.

I took up the suggestion of a tripod collar and splashed out on the genuine Canon model (tripod mount ring A II (W)). It has really changed the balance of the camera + lens and it makes it far easier to keep the combination steady.
I also purchased a spare plate (for my Manfrotto 496RC2 head) to keep on the collar so I can easily mount the combination onto the monopod without taking the original plate off the camera.
After experiencing the ease with which I can now move the camera between portrait and landscape formats (just loosen the collar, turn the combination by 90 degrees and tighten the collar again) I purchased a collar for my 100L macro lens (tripod mount ring D (B)). This makes life much easier when changing between formats.

Conclusion: I would highly recommend the collar.

Many thanks to all who gave their posts, especially Hillsilly who suggested the collar.

Greetings from Argyll, Scotland,
DavidR
 
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Chris Burch said:
Keep in mind that IS and tripods only fix camera movement and have no effect at all on subject motion. If you're shooting a moving object, 1/100s may be too slow to capture a crisp shot that's free of motion blur.

Chris makes a good point here. When you wrote about shooting at 1/100th, you didn't mention the focal length you shot at, I'm assuming that you understand that 1/100 at 70mm will give you much different results for sharpness as compared to 1/100 at 200mm?

Anyway, try shooting at 200mm at 1/800th and see if the image is soft. If it is, then you might have an issue.
 
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sjprg said:
I shoot some with a 100-400m +1.4 +2.0 TC. I always have the IS on. Don't be afraid to crank the ISO up, I use 1600 quite a bit to keep the shutter speed at 800 to 1200 at F8. Better for the noise which can be corrected easier than the motion blur.


Very nice pic...i like the colors. Good advice too, except that at 1/800 or 1/1200, IS doesn't help your images. IS is for slower shutter speeds, and some (like myself) think that it actually has a small negative affect on AF when shooting fast moving stuff.
 
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