Dust Problem!

Ok so I recently took some shots(will update with pics when i get off work) with my 17-50 and there were some NASY spots, cleaned the lens, still, nasty spots. So i took my body to a local repair shop to have the sensor cleaned, he said he found 4 or 5 sizable specs of dust and got rid of them for me. A few days ago i took a few shots with my 10-17, and the spots are in the EXACT same places. Took a few with the 17-50, same result. Weird thing is, i have NEVER had a single spot show up on my 70-200 images. what could be going on???

can you post a picture of what the dust looks like?

what kind of cleaning methods have you used? rocket blower? sensor wipes?

There may have been flakes or dust on the rear of the lens that broke loose in operation and got on the sensor.

It sounds like the repair shop ripped you off.

How did you clean your lens before? Copper Hill? Forced air? There is a new method out there that allows you to dry clean your sensor called Dust Aid that is great at cleaning. As for not gathering dust, you can always turn off the body, hold it face down while changing it and to do it a quickly as possible. But in the digi world specs are a fact of life. I think you just got lucky with your other lens.

I have a rocket blower but thats it, with the lens i have literally never taken off my UV and i dont change lenses that often when shooting. If i do i am super careful about where i point it and wind etc. i just dont get why its only showing up on these 2 lenses all the time.

303villain wrote in post #2908459
I have a rocket blower but thats it, with the lens i have literally never taken off my UV and i dont change lenses that often when shooting. If i do i am super careful about where i point it and wind etc. i just dont get why its only showing up on these 2 lenses all the time.

Like I said, dust is a fact of life. Get a method (other than a blower) to clean your camera and learn to use it. Once you're comfortable cleaning your own, dust is no nig deal.

I am gonna look into some of the methods you provided, thanks for the input!

303villain wrote in post #2908603
I am gonna look into some of the methods you provided, thanks for the input!

No Problem. I've used the Copper Hill in the past, but I am a Dust Aid man now. Easy, no hassle method. Just be careful and follow the instructions.

http://www.pictureline​.com …_Wet_&_Dry_Swab​_-_2_Pack/

303villain wrote in post #2908240
Ok so I recently took some shots(will update with pics when i get off work) with my 17-50 and there were some NASY spots, cleaned the lens, still, nasty spots. So i took my body to a local repair shop to have the sensor cleaned, he said he found 4 or 5 sizable specs of dust and got rid of them for me. A few days ago i took a few shots with my 10-17, and the spots are in the EXACT same places. Took a few with the 17-50, same result. Weird thing is, i have NEVER had a single spot show up on my 70-200 images. what could be going on???

Check your f-stops. The dust may not show up at smaller f-stops like 2.8, but could easily do so at f8 and become even more noticeable as the f-stop gets larger. For some reason, seems to show up more on a wide angle lens than a telephoto lens. One reason is the sky, clean background to see dust spots against.

That's what I found.
Some personal views on Sensor cleaning.

Thanks for all of the advice, here are some sample images(they may seem randon, they were for a project for school).

1-Before the sensor cleaning

The 1st doesn't look sharp @ f/22. probably because PB resized it. You can turn that off WHEN you upload the image.

It's worth a try. Maybe this time they'll really clean it?

It is filthy. It is normal to have a speck here or there even after cleaning but they will usually be at the edges. Mine has 1 speck at the edge right now. I would call the results you show unacceptable. If I were cleaning a sensor for someone, I would clean then test and if necessary clean again....I think it is reasonable to expect that.

i thought it was pretty bad too, thats why i freaked out. However, it was a few weeks ago that they cleaned it so im not sure how likely they will be to re-clean it. Ill try though. If not ill buy the materials to clean it myself.