Any Ideas On How To Remove Dust From An Image??

[wickerprints]

If the spot shows up when that specific lens is mounted, but not when using other lenses, then it must be dust in the lens and not the sensor. Not many people realize this, but dust in the lens *can* show up on the image, depending on where it is located in the optical path, the focal length of the lens, the chosen f-number, and other factors. Essentially, when the DOF is very large, dust in the lens may be visible. Diffraction can even cause the spot to appear in the blur disks of the lens when taken wide open (but this is not what is happening in this case).


Do not attempt to vacuum the dust out. Not only will it fail to work, it may introduce more dust into the lens than you are trying to remove.


As for the Dust Delete function, it doesn

[elmo_2006]

Hi wickerprints...

If the spot shows up when that specific lens is mounted, but not when using other lenses, then it must be dust in the lens and not the sensor.

It does, this is the only lens that displays this *particle*. The image output and the location of the particle matches where I can see the object within the lens.

Finally, if it is truly bothersome to you, you can always have the lens disassembled and cleaned. But be aware that even if you do this, dust will eventually find its way back inside. So, unless the particle is exceptionally large (easily visible without the use of a flashlight), I doubt it is worthwhile to have it cleaned.

I can actually see the particle without the use of a flashlight but I prefer not to send it in especially as we leave tomorrow - []

[elmo_2006]

Update...


After further testing, it is in fact a dusty sensor. I tried with both the 24-105 and 70-200 and the particle shows up all in the same region. To make things worse, I attempted to manually clean via the blower, and now I

[neuroanatomist]

Short of the blower, I wouldn't recommend trying to clean your sensor with anything but a product specifically designed for sensor cleaning. Is there a major photo store anywhere near you (Henry's, Vistek)? They will likely have something to rescue you. Or, depending on when you leave tomorrow, you can possibly have something overnight shipped? I've gotten great results with theVisible Dust Arctic Butterfly 724 Super Bright..


Or, use the Dust Delete function. Or clone out the spots in post.


Good luck, and have a great trip!

[elmo_2006]

Henry

[HDNitehawk]

Henry's has the solution that you have mentioned, so I'll check them out tomorrow as I'll be in their *neck of the woods* for some last minute shopping - the flight is @ 22:30 pm have plenty-o-time to kill.

You know it seems to create fear when you start talking about cleaning a sensor. I stuck with the blower for a long time before I finaly graduated to somthing else. Alot of people like the brushes, and I have talked to alot of people that do not. The local camera shop does not use the brush. It is my understanding if you use a brush, the idea is to generate static that attrackts dust, not sweep the sensor. Any one can correct me here if I am wrong, because I do not use the brush.


So about 6 months ago when the sensor got really dirty on the 5D II I decided it was time I took the plunge. I used these with some cleaning sensor solution:


[View:http://www.bhphotovideo.com/c/product/308405-REG/Photographic_Solutions_SS3BOX_Sensor_Swab_Type_3.h tml]


It took me about 7 of them to get the sensor clean. You use these with a bit of sensor cleaning solution. Use them only one swipe and discard. Make sure you have the right size swab for your camera.Use a fluid motion from one side to the other firm but gently stroke. After you finish use the blower and blow it off, then check it again. Most common is it will leave a little resude in the corners. It may leave small pieces of lint that easily blows out. Put the lens on, and retest. Sometimes it takes a few trys before you finaly get it all.


That was a short explanation, there are several videos on the net that tell you how to do this. Watch a few of them, make sure you have a full battery charge, go slow and be carefull.


When I bought my 1D IV it was dirty as heck right out of the box. I had to clean it first thing, kind of disapointing that Canon wouldn't QC there top camera for cleanliness.


Don't take this as my recomenation to try or not. It is your camera and sensor, take what risk you feel acceptable with your skill level and abilities.


Good Luck


Rick

[andnowimbroke]

You might also consider taking a swab/q-tip and rolling it around it the bottom of the box first before using your blower. Most dust gets shook down there after every use and blowing it out first will send a plum of junk all over the place.

[Alan]

Manually cleaning the sensor is not to be feared. The swab method works very well. Usually, they provide a solvent (methanol) that is dropped onto the swab, just before cleaning the sensor. This will dislodge stubborn particles.


I think I remember reading that you're not actually touching the sensor, but an IR filter that covers it. Just follow the instructions on how to wipe the slightly damp swab across the sensor area.


Be sure NOT to touch the mirror with the swab.