Help. Annoying mark on some pics

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three6ty

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Hi,
Been out testing the new 600d tonight and got some nice shots. However one thing came up when I was doing some sunsets. I got loads of great photos and did lots of experimenting with manual settings. But whenever I used shutter priority I got an unsightly mark like a hair or something on the pictures. This only happened on Shutter priority. Took loads on other settings and seemed fine. Went back to SP later and was getting the same mark on the photos. Anyone know why this is happening. I guess it's something on the mirror or sensor but why only in Shutter priority. I have attached a link to a picture to show what's happening. Here. The mark is on the right hand third half way up. Thanks for any advice.
Cheers, Rich
 
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Looks like fluff on your sensor, if you were in shutter priority, it was possibly using a much smaller aperture which made it more obvious. Check the full settings, then get a rocket blower and carefully give the sensor a blast.

edit: yep, F22 according to the exif, so any grot on sensor will show at that aperture.
 
Yv said:
Looks like fluff on your sensor, if you were in shutter priority, it was possibly using a much smaller aperture which made it more obvious. Check the full settings, then get a rocket blower and carefully give the sensor a blast.

edit: yep, F22 according to the exif, so any grot on sensor will show at that aperture.
Click to expand...

Thanks. Is this easy to do? Is it easy to damage the sensor doing this? What's a rocket blower? Any tips? Sorry so many q's. Don't want to mess up the new cam.
Cheers, Rich
 
Its easy to do, cameras have a 'mirror lock up to clean' in the menus especially for doing this [not to be confused with mirror lock up to reduce movement risk when using long shutter speeds]. A Rocket blower is a rubber bulb with a tube attached that blows air out, you can pop into Jessops or similar and buy them for a few pounds.

Basically, you go into lock up mode, and blow the sensor, without actually touching it with the end of the tube, and that will hopefully dislodge the dust. However, if you are in anyway concerned, you can take the camera in to many camera shops and get a professional clean if you prefer.
 
Thanks. Was just about to post up that I found a guide on youtube. Easy process. I have a blower here. Will do in the morning.
I now understand also why the dust was showing in some pics and not others. Thanks again.
Cheers, Rich
 
As far as I know the 600D has sensor cleaning so it'll be worth activating it a couple of times to see if that clears the problem.

If not you can open the shutter and give it a good blast with a rocket blower. I'm not too sure what the menu option to open the shutter for sensor cleaning will be called but in my 5D menu it simply says "sensor clean" or maybe "clean sensor" but as your 600D has an auto function I'm not sure what the menu options will be.

If neither the auto sensor clean function or a rocket blower shift the contamination you'll need to do a wet clean.
 
HoppyUK said:
Just don't touch anything inside.
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That's a little O.T.T. Hoppy.

The sensor (it's not actually the sensor you clean but a filter) can be easily cleaned by anyone with a little care and there are plenty of instructions and videos on the net showing you how to do it. I've cleaned my sensors dozens of times over the years with no ill effects what so ever. In fact I always do a better job than Canon did for me when I paid them to do it.

three6ty....

If a camera auto clean or rocket blower doesn't shift whatever is on your sensor you could check out the on line instructions on how to do a wet clean. It's really not hard, there's special swabs you can buy and there's next to zero chance of damaging anything. If however you aren't confident you can have your camera professionally cleaned and any good camera supplier should be able to arrange this for you or at least provide you with details of where to send it.

Good luck. I hope you get it sorted.
 
woof woof said:
That's a little O.T.T. Hoppy.

The sensor (it's not actually the sensor you clean but a filter) can be easily cleaned by anyone with a little care and there are plenty of instructions and videos on the net showing you how to do it. I've cleaned my sensors dozens of times over the years with no ill effects what so ever. In fact I always do a better job than Canon did for me when I paid them to do it.

three6ty....

If a camera auto clean or rocket blower doesn't shift whatever is on your sensor you could check out the on line instructions on how to do a wet clean. It's really not hard, there's special swabs you can buy and there's next to zero chance of damaging anything. If however you aren't confident you can have your camera professionally cleaned and any good camera supplier should be able to arrange this for you or at least provide you with details of where to send it.

Good luck. I hope you get it sorted.
Click to expand...

I meant with the blower Alan. I didn't mention any wet cleaning, it's a new camera with a bit of fluff on it. Might even sort itself with the camera's auto-clean, as you suggested.
 
Hi,
Thanks for the advice all. I couldn't find my blower. Had it from a previous camera years ago. But I'll go get one in town today. I will also give the in built sensor clean a go. Found that in the menu's no problem. Thanks again all.
Cheers, Rich
 
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