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12-16-2013, 05:32 PM   #1
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Sigma 170-500 shake due to shutter movement.

I have a new(new to me) Sigma 170-500 and just took some test shots at the moon... I can see the image shake when I fire the shutter.
needless to say the images are a tad soft...

K-5IIs
Shutter speed of 1/500
Slik 700 tripod with the AF2100 head...

I thought for sure this tripod/head combo would be more solid, or is this just life with a lens this long?

12-16-2013, 05:51 PM   #2
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How are you firing the shutter?

Best to use a cable or wireless remote of some kind, along with the timer setting to get mirror lockup for long lenses like this if you can. At least use the timer if you are using the shutter button
12-16-2013, 05:57 PM   #3
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Did you have the shake reduction off? My understanding is that this could cause blur on a tripod.

That's the only thing I can think of because I think that people with steadier hands and better technique than mine could get sharp images hand held at that shutter speed.
12-16-2013, 05:58 PM   #4
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I forgot to mention.. I was using a cable release and the mirror up option.

QuoteOriginally posted by jezza323 Quote
How are you firing the shutter?

Best to use a cable or wireless remote of some kind, along with the timer setting to get mirror lockup for long lenses like this if you can. At least use the timer if you are using the shutter button


12-16-2013, 05:59 PM   #5
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Well that should automatically disable any SR as well, so rules that out!

Was it especially windy or was the tripod not on a completely stable surface perhaps?
12-16-2013, 06:00 PM   #6
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Ah.. I knew this.. And forgot all about it and left it on ... Will try again...



QuoteOriginally posted by drugal Quote
Did you have the shake reduction off? My understanding is that this could cause blur on a tripod.

That's the only thing I can think of because I think that people with steadier hands and better technique than mine could get sharp images hand held at that shutter speed.
12-16-2013, 06:17 PM   #7
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Stick something heavy in the middle of your tripod to help with stability.
12-16-2013, 08:22 PM   #8
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Hi, another possible reason is that the camera is not mounted tight enough to the lens. I think your tripod head only mount to the lens, so the camera itself can shake/or be shaken when shooting.
You can try or modified your tripod head with two mounted points: 1 for the lens and one for the camera. (i'm not sure if there is any product like that out there)

12-16-2013, 08:39 PM   #9
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Try not extending the smallest legs and see if that kills the vibration.
They do make a gadget that attached to the camera socket and has a leg that attaches to the tripod leg.
Manfrotto 3252, I've got one, weird but it works.
12-17-2013, 09:09 AM   #10
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After further testing, I think this is may be the problem...
If I mount the camera directly on the tripod using other lenses like my DA 55-300, its solid during shutter movement...

QuoteOriginally posted by roykin Quote
Hi, another possible reason is that the camera is not mounted tight enough to the lens. I think your tripod head only mount to the lens, so the camera itself can shake/or be shaken when shooting.
You can try or modified your tripod head with two mounted points: 1 for the lens and one for the camera. (i'm not sure if there is any product like that out there)
12-17-2013, 07:19 PM   #11
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A slik 700 is a nice tripod and good value, but I don't know if it will work for 750mm equivalent at 1/500th, even if you hang some extra weight off it. Even my Manfrotto studio tripod would probably not be enough, with only one mounting point. When I use the studio tripod for my longest lens, only 300mm (and admittedly sometimes at slightly slower speeds) I have to hope for absolutely no wind or other sources of vibration. Maybe both of them combined would work (larger tripod for the lens, lighter one for the camera), as long as you could figure out where to place all those legs.

What happens at, say, 1/2000th?
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