Gutted - scratch

March 9th, 2011
When I was taking my photos of the motorway I noticed on the image a mark. I edited it out. I took a couple of pictures tonight and the mark is there in the same place. I have wiped my lens at both ends with a lens cloth, the cotton buds I got with my macro lenses and paper wipe thingys. I don't have a blower so I blew on both ends also. Did the same to the mirror in the body. Thought I had made a mistake doing that as my shots were a bit misty later but after a few more wipes it's cleared up. Only thing is it hasn't made a bit of difference, the mark is still there. I can't see it on the lens at all but only in the photos. Also, after googling it I have noticed that when it's stopped down, that's when it's more prominent than when it's wide.

Is there anything I can do myself or will I need to get it professionally seen to. It's my kit lens but I rely on that. I'm not sure how far down the stops go before you see it, I have only ever used my f stops at either it's narrowest or widest and the occasional f11ish which I haven't noticed it on but not used that in ages so maybe it was there the last time I used that and maybe not.
March 9th, 2011
After looking at forums and getting ideas whther it's a scratch or not, I'm now not sure. One way to tell was looking through the viewfinder, I cannot see it through the viewfinder.
March 9th, 2011
@kirsty1975 Sounds like it's probably dirt, dust or similar on your sensor if you don't see it through the viewfinder.
I had a similar thing - took a whole series of photos of a fantastic sunrise, all ruined by a strange wavy line.
When I took the lens off & looked, there was a small hair in the chamber of the camera, just in front of the sensor that was showing up on my pics - and more so at smaller apertures. Using a pair of tweezers, and a steady hand, I was able to remove it & the problem was solved.
Hope it's this straight forward for you.
March 9th, 2011
@sburbidge I saw a hair and pulled it out but wasn't that so unless there's another. was thinking of using surgical spirit to clean it but I'm scared of damaging it. Is it a good idea or not?
March 9th, 2011
There are lots of specialist sensor kits & cleaners on the market. It's not something I've ever done, but I'd suggest you stick to the right stuff for the job, or get it done professionally, as I'd hate for you to mess up your sensor... @kirsty1975
March 9th, 2011
I would take your camera to be cleaned professionally. The sensor is extremely delicate, and it's not something I'd mess around with. From what you describe, it definitely sounds like you've got something on the sensor, though. I have several dust spots in all of my shots from the same thing, and while I usually just edit them out, it's definitely a pain!
March 9th, 2011
@sburbidge @melissapike Yeah, I suppose I should, it's really put a dampner on my day and doubt I'll get it seen to till at least the weekend. Suppose i can use my p&s in the meantime or just edit it out. Although I rarely use the narrowest stop anyway, only in my night shots so far. I've pulled out a couple of hairs but not the right one if it is that and it is a squiggly line. I can't even check using my other lens if it's my sensor either as that only works on the widest f stop. So annoying.
March 9th, 2011
Have you tried using a lens duster to blow ithe camera body and sensor off/out? I wouldn't reccomend canned air as it expels moisture when you spray it. They have what amount to a miniature bellow that will put some force behind the air. This is probably not it, but you never know.
March 9th, 2011
@shadesofgrey I used my air pump for blowing up my air bed and it's gone now BUT with me playing about I have marks on it which I can see through the viewfinder but it's not on the image. I suppose I can live with that. I used a wee brush and since that I have left marks whcih my pump isn't getting rid of, grrrr. At least my images are now fine, lol. I think I will take it to get it seen to though to clear those other marks but now I don't have to worry. Now I have 15 minutes to midnight to get a shot, oops
March 9th, 2011
@kirsty1975 well best of luck getting the marks fixed AND getting your picture done!
March 10th, 2011
Kirsty, It's a spec your sensor. Sorry to sound so confident. May I recommend Eclipse E2 and special swabs to clean it. Easy. Works well.
http://www.amazon.com/s/?ie=UTF8&keywords=eclipse+e2&tag=googhydr-20&index=aps&hvadid=4342246409&ref=pd_sl_95l4d5umwo_e
March 10th, 2011
Oh, don't use compressed air. Sensors are very sensitive. Too much air pressure, and it's sayonnara sensor. Use fluid versus air, unless you are well trained on ow to use the air.
March 10th, 2011
@moncooga Oh thanks for that will look into getting that. I did use the pump which worked on that particular mark but didn't realise it may be too strong for it. Will keep that in mind if it happens again.
March 10th, 2011
@kirsty1975 Using anything that blows in to the camera may move the dust but it'll just move dust around inside the camera, there are special kits with a vacuum brush and sensor cleaning stuff that aren't very expensive...
March 10th, 2011
I agree on the eclise liquid, pec pads and sensor swabs. (although I don't think e2 does nearly as good of a job as regular eclipse) Sensors are not nearly as fragile as you think. You're not even actually cleaning the sensor. The sensor is behind a hotmirror filter that blocks IR and UV light. If that gets scratched (which isn't at all likely with a sensor swabs and pec pads) you can replace the hotmirror.

You're more likely to damage the shutter or the mirror than you are to damage the sensor while cleaning your sensor. (And if you don't learn how to properly lock up the mirror for cleaning, it's very likely that you'll damage the shutter or the mirror.)
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