Is this acceptable amount of sensor dust?

Hello!

My test pictures had about 8 spots and now after sensor-cleaning/done by a company(without taking apart the camera)/ I still see 3 spots.
Is this considered clean ?
Test picture: f/22 , 1/50sec , OOF
Edit: Resized the picture.

3504 x 2336

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Not if you paid to have it done.

Fery11,

Take that to Photoshop and run auto-levels and you'll see at least 15 dust-bunnies. If you are happy with that, then they did a good job and vice-versa. If your photography never sees you stopping down past f/6, then you may never be bothered by it, but if you shoot macro, portrait or landscapes, then you should have the sensor re-cleaned by yourself or someone other than the company you used.

Nicholas
www.copperhillimages.c​om

It was only 12$ but I am disappointed.
Yeah auto level brings out all those dust particles. Ridiculous...

Feryll wrote in post #14332027
It was only 12$ but I am disappointed.
Yeah auto level brings out all those dust particles. Ridiculous...

You probably got your money's worth .

Seriously, don't feel too bad, sending a body to Canon @Jamesburg or @El Segundo is a crapshoot at best, some people have good luck while others get their cams back with as much and even more dust on the sensor. Either find another company to do the job or look into doing it yourself.

Nicholas
www.copperhillimages.c​om

$12 - yeah, thats acceptable.

Used air puffer now its better but there are still 2 visible spots at different places. (and more when used autolevels in PS)

My rule is I clean it myself when the post-processing becomes annoying.

I don't take a lot of shots of the clear blue sky. I'm too busy taking pictures of more important stuff. So it doesn't often come up.

Goodness...f/22? If you can't see it in normal usage, I wouldn't sweat it.

Stop shooting at f22 (other than to check the sensor's state of cleanliness... or lack of it).

It's rarely necessary to use smaller than f8 or f11 on a crop camera like your 30D. I doubt you'll even see the dust specks then.

Learn to clean it yourself. I used Dust Aid to clean my 30Ds, which are sort of a lighlty adhesive pad that grabs the dust. Always had to follow up with a bulb blower to get rid of some remaining loose dust. Only occasionally wet cleaned them (sometimes it's necessary if there is oil on the sensor, probably lubricant from the shutter itself).

amfoto1 wrote in post #14332676
Stop shooting at f22 (other than to check the sensor's state of cleanliness... or lack of it).

It's rarely necessary to use smaller than f8 or f11 on a crop camera like your 30D. I doubt you'll even see the dust specks then.

Learn to clean it yourself. I used Dust Aid to clean my 30Ds, which are sort of a lighlty adhesive pad that grabs the dust. Always had to follow up with a bulb blower to get rid of some remaining loose dust. Only occasionally wet cleaned them (sometimes it's necessary if there is oil on the sensor, probably lubricant from the shutter itself).

Alan,

It really depends on what you're shooting and the final output:
1) Macro shooters routinely stop down heavily, way past f/8
2) Portrait shooters typically use very light backgrounds and can see dust clearly at f/6 or f/7
3) Landscape shooters see dust at mid-range f-stops, usually in the blue skies and clouds

Now, if you are just an avid amateur who is not selling images or prints, yes, don't worry about dust. If you always shoot wide open, the same applies, don't worry about it. But if you are in the 3 categories I listed and are planning to sell your work, you should try to keep the sensor as clean as possible.

Nicholas

I shoot a lot of macro stuff, up to f16 at times, and I hate dust spots on them. There's usually so much detail in macro that it's hard to clone out. I had one that looked like I had a hunchback wasp last time my sensor was bad.
I've just updated to a 5D3 and I'm a bit leery to start cleaning that up just in case of a balls up. I know it's perfect at the moment and the lens doesn't get swapped much so I'm hoping it's going to stay that way for at least a while. It wouldn't be such a nerve wracking experience on my 60D though as the money factor doesn't seem to come into it too much.

I wouldn'y worry about 3 spots, in real life pictures you will not see them.

My word I need a new LCD screen, your attached image is huge !!!

Feryll.. you need to bring that image down to the acceptable size limit, or a Mod will "help" you

Image Posting Rules

Use the search function to see what other members do regarding sensor dust.

I use Copperhill
There is a tutorial on that site that is very helpful..
.. as is Nicholas R.