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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 26 Oct 2011 (Wednesday) 14:49
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is my camera broken???

 
junior_tm
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Oct 26, 2011 14:49 |  #1

i drove 1 1/2 hour east of atlanta to take some pictures of the night sky without the light polution but when i got back this is how the pictures turnout. has anyone encounter this before?

the first picture is from my balcony the second one is from the trip i took.

both pictures were on the tripod and the shutter open for 30 seconds. iso 200.


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L.Morey
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Oct 26, 2011 14:57 |  #2

Can you duplicate this by just taking normal picture


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Oct 26, 2011 14:59 |  #3

Looks like regular UFO's to me. :lol:

30-seconds, you'll get some star-trailing effects. There's also some shake so it's likely due to vibrations from the mirror flapping up and shutter moving. I'm assuming you didn't take this w/ MLU, or w/ liveview.

As to why there's multiple little circles on the 1st image all bunched up together... it's obviously a light source. I'm no astronomy guy so I don't know what stars were captured. Could be wind buffeting. Could be reflections due to a UV filter.


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Oct 26, 2011 15:05 |  #4

I don't know what camera and lens you used, but when I tried some with my 7D the other night using my 50mm lens I found that I had to drop the shutter speed to no longer than 4 seconds to (mostly) eliminate star trails. I'm with jwcdds on the first image - it looks like camera movement to me.


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bohdank
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Oct 26, 2011 15:24 |  #5

The first one is camera shake or even an IS that should be turned off or both.


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tpiini
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Oct 26, 2011 15:47 |  #6

bohdank wrote in post #13310937 (external link)
The first one is camera shake or even an IS that should be turned off or both.

I agree. When you said you took it from a balcony, was it a WOODEN balcony? If so, no matter what kind of tripod you have, if you take even one step on that balcony you will get movement.




  
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Oct 26, 2011 16:12 |  #7

I agree with those above - the first picture looks like camera shake, and the second looks like the normal beginnings of star trails. It doesn't take long for them to form. What focal length lens were you using?

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junior_tm
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Oct 26, 2011 16:53 |  #8

I have a rebel t3i using regular 18-55mm that came on with the kit, I'm trying to take to figure this camera out before I buy other lenses




  
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Sdiver2489
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Oct 26, 2011 16:57 |  #9

junior_tm wrote in post #13311394 (external link)
I have a rebel t3i using regular 18-55mm that came on with the kit, I'm trying to take to figure this camera out before I buy other lenses

Good for you taking time with the lenses you have before getting caught up in equipment. Yes, it looks like you had camera shake or IS causing shake. In my testing IS hasn't caused any issue with being on when on a tripod but I've never tested the 18-55mm and some lenses detect tripods...some don't.

Make sure to use 10x liveview to focus on stars...the line between in focus and out of focus is tiny.


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Oct 26, 2011 17:03 |  #10

It appears that IS isn't the issue since the second image has sharp star trails on it, but it can't hurt to turn it off when doing tripod mounted long exposures just to be sure that it can't cause any problems.

-Pat


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eosphotomanoftennessee
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Oct 26, 2011 19:43 |  #11

I didnt see any mention of a remote shutter release, you WILL need one.


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DarkPhantom
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Oct 26, 2011 20:22 |  #12

try it with a delayed shutter (10s) if not a remote trigger to help w/ the shake.

Also, use live view to properly focus(manually) and turn IS off.




  
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junior_tm
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Oct 26, 2011 21:47 |  #13

Yeah no remote shutter and sorry to ask this what is "IS"???




  
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tpiini
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Oct 26, 2011 21:54 |  #14

junior_tm wrote in post #13312669 (external link)
Yeah no remote shutter and sorry to ask this what is "IS"???

Image Stabilization




  
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tonylong
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Oct 27, 2011 00:02 |  #15

junior_tm wrote in post #13312669 (external link)
Yeah no remote shutter and sorry to ask this what is "IS"???

Many Canon lenses come with Image Stabilization. It's quite cool for hand-held photography, you can shoot at shutter speeds significantly slower than the "hand-held rule-of-thumb", but can cause problems on a tripod.


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is my camera broken???
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