Blemish in photo

[sfwalter]

Hi,

I was taking photos this weekend and on some of my photos I see a round blemish on the photos. It doesn't seem to be showing on all them.

I have added a photo to this message with a line pointing to the blemish in question.

What exactly is the blemish? Is there a smudge on my sensor? Or perhaps on my lens or uv filter?

Thanks for any help!

scott.

[coffee]

If it was on your lens, you probably wouldn't see it in you images.

That looks like dust or dirt on your sensor. Buy a rocket blower and try to blow the dust off first. Don't allow the blower inside the camera chamber though to avoide you hitting something in the camera and damaging it. If that doesn't work, get the sensor cleaned somewhere, or learn to clean it yourself.

In the mean time, you can clean that spot up in PS. It's probably on all your photos but only shows up on lighter images.

Plus, that images has many different dust spots on it, not just one.

[umajo]

yes i had the same and found it was on the senses endied up having to lock the mirrors up and blow it from there and bingo gone why it didnt appear on everything on mine it was a hair and it shifted around wiuld you believe

[jerryph]

Looks like nothing more than dust on the sensor. It will not appear on all pictures, just on the ones with a smaller (numerically higher) aperture. If you will note, your pic above was taken at F/10. If you took the same pic at F/4, the spot would not be there.

Time to clean the sensor.

[coffee]

Looks like nothing more than dust on the sensor. It will not appear on all pictures, just on the ones with a smaller (numerically higher) aperture. If you will note, your pic above was taken at F/10. If you took the same pic at F/4, the spot would not be there.

Time to clean the sensor.

This isn't always true with my experience. I checked my sensor at f5.6, and could see the dust clearly. I think what matters more is if the dust spots land on a darker/lighter part of a photo. If that spot corresponded to a dark part of a photo, you wouldn't see it, but because it was part of a light ski, it showed up nicely. But in any regard, it's time for a cleaning.

My 40d, 100-400L and 24-70L are all going back to Canon as part of a calibration/cleaning under the year warranty. That is after this comming weekend when the leaves are in full color.

[umajo]

yes that was like mine too showed up on the lighter colors cleaned sensor and all was good

[sfwalter]

All,

Thanks for your help! Indeed it was the sensor that had dust on it. I was able to remove the dust and my camera is taking prestine photos again.

I was able to use the heal tool in Photoshop to correct the photos I already had taken. Which is another reason why I need to get a license to Photoshop before my 30 day trial is up. But man is it pricey!

scott

[coffee]

All,

Thanks for your help! Indeed it was the sensor that had dust on it. I was able to remove the dust and my camera is taking prestine photos again.

I was able to use the heal tool in Photoshop to correct the photos I already had taken. Which is another reason why I need to get a license to Photoshop before my 30 day trial is up. But man is it pricey!

scott

Yes very pricey. I couldn't afford PS so I settled for PS Elements. Not as nice, but good enough for now.

[jerryph]

I checked my sensor at f5.6, and could see the dust clearly.

You likely had a LOT of dust... lol. It is a fact that the smaller the aperture, the easier it becomes to spot dust on the sensor or the lens.

[mbucky32]

I dont know what kind of camera you have, but I know Canon camera's have a dust mapping tool that will digitally remove it from your photos if you're unable to clean it or get it cleaned right away.