Maiznblu_757 From United States of America, joined Mar 2002, 5112 posts, RR: 54 Posted (7 years 11 months 4 days 13 hours ago) and read 1530 times:
I was zooming in some really hazy conditions with my Canon 100-400mm L IS today. I got home and opened up the pics and after post prOcessing, I have 5-7 little dark circular spots around my photo.
This is the first time I have seen this on any of my photos. Can anyone offer some insight?
Maiznblu_757 From United States of America, joined Mar 2002, 5112 posts, RR: 54 Reply 2, posted (7 years 11 months 4 days 12 hours ago) and read 1490 times:
Thanks, chief, but, in this case, I doubt its dust. It only shows up on a few of my photos.
Vafi88 From United States of America, joined Apr 2001, 3116 posts, RR: 23 Reply 3, posted (7 years 11 months 4 days 12 hours ago) and read 1480 times:
Maiznblu - instead of telling us what it looks like, show us a picture and don't bomb Jeff for trying to help you. From your description, it DOES sound like you need some cleaning.
Maybe you have a dirty lense?
I'd like to elect a president that has a Higher IQ than a retarted ant.
ExitRow From , joined Dec 1969, posts, RR: Reply 4, posted (7 years 11 months 4 days 12 hours ago) and read 1477 times:
Sensor dust.
It generally shows up in areas of little detail, like blue sky. It's probably on all your photos, you just don't see it.
Try blowing some DRY air on the sensor with the mirror locked up. If you try and physically clean the sensor on your own it's gonna be another 50 thread starters for sure ...
Maiznblu_757 From United States of America, joined Mar 2002, 5112 posts, RR: 54 Reply 6, posted (7 years 11 months 4 days 12 hours ago) and read 1474 times:
Once again, its only on a few photos. I have been analyzing this more than Jeff has the last hour, and it only seems to be on images I took in RAW format in full zoom. Its not all of them either. Only a few.
I just processed a few pics that were taken in HQ JPEG with nothing wrong.
Maiznblu_757 From United States of America, joined Mar 2002, 5112 posts, RR: 54 Reply 7, posted (7 years 11 months 4 days 12 hours ago) and read 1471 times:
Never mind, figure it out yourself Chad. Why are you so damn hard headed?
Chief, I might as well, you damn sure arent helping me. Didnt expect much from you anyhow.
JeffM From United States of America, joined May 2005, 3266 posts, RR: 56 Reply 8, posted (7 years 11 months 4 days 12 hours ago) and read 1463 times:
I told you what they are, William told you what they are. Now, do some research and tell us all why they only show up on some photos. Many of us understand why and can tell you, but to really learn, find that info for yourself.
There is also a great thread on how to clean that sensor. We have been banging it around for over a year on here. And that IS what you will need to do. Two basic methods, one is fool proof, the other is hit and miss.
Maiznblu_757 From United States of America, joined Mar 2002, 5112 posts, RR: 54 Reply 9, posted (7 years 11 months 4 days 12 hours ago) and read 1459 times:
Thanks William, I appreciate your help.. I ll look into that.
I just took a couple test photos. Nothing showing up though.
AIRHEAD711 From United States of America, joined Mar 2002, 249 posts, RR: 3 Reply 11, posted (7 years 11 months 4 days 2 hours ago) and read 1352 times:
Do what Craigy says. Take a pic of the clear sky. Open it up in Photoshop in fullsize(actual pixels). Then hit auto levels. Every dust spot you have will stick out like a sore thumb.
Maiznblu_757 From United States of America, joined Mar 2002, 5112 posts, RR: 54 Reply 12, posted (7 years 11 months 3 days 23 hours ago) and read 1317 times:
Thanks William,Craig, and....
Scott. WOW is right. I dont think I could drop myself to that level. Your a better man than me.
Fireguy274 From United States of America, joined Dec 2003, 299 posts, RR: 10 Reply 13, posted (7 years 11 months 3 days 23 hours ago) and read 1309 times:
Chad do what Exit Row said first. Blow the sensor off good with a hand blower with the mirror up. I had the same spots you speak of and this took care of it....Artie
Maiznblu_757 From United States of America, joined Mar 2002, 5112 posts, RR: 54 Reply 14, posted (7 years 11 months 3 days 23 hours ago) and read 1305 times:
I just ordered a Sensor Swipe and the pads and that Eclipse stuff. It cost me 30 dollars. Hopefully it will work. I dont really want to blow the dust around. I would like to to get rid of it.
Fireguy274 From United States of America, joined Dec 2003, 299 posts, RR: 10 Reply 15, posted (7 years 11 months 3 days 22 hours ago) and read 1298 times:
I bought the same stuff Chad but was able to just blow the sensor off real well with a hand blower and I have not had the problem since and didnt have to use the cleaner. Keep in mind if you clean that sensor yourself its not covered under warranty if you damage it....Artie
Tappan From United States of America, joined Oct 1999, 1538 posts, RR: 51 Reply 16, posted (7 years 11 months 3 days 16 hours ago) and read 1234 times:
BLOWBALL.....
It is called a blowball........
VERY cool rubber thingamajig that saved my cameras (and ultimately my photos) from sand when I recently went on a trip to St Maarten.
Very inexpensive and, I kid you not, it is named blowball.
Mark Garfinkel
P.S Transportation Security screeners at the airport will take it out of your camera bag and think it is some kind of a sex toy
Bronko From United States of America, joined Jul 2001, 804 posts, RR: 15 Reply 17, posted (7 years 11 months 3 days 15 hours ago) and read 1205 times:
I used a blowball today with my 300D, they work great. You should be able to find one at a baby supply store. I have also used it to suck the dust off when I could see it.
Maiznblu_757 From United States of America, joined Mar 2002, 5112 posts, RR: 54 Reply 18, posted (7 years 11 months 3 days 13 hours ago) and read 1184 times:
I read that if you take a Q Tip, (NOT TOUCHING the sensor!)holding it just above the sensor, the polarity will cause most dust particles to "jump" to the Q-tip. Anyone heard this?
JeffM From United States of America, joined May 2005, 3266 posts, RR: 56 Reply 19, posted (7 years 11 months 3 days 13 hours ago) and read 1177 times:
Assuming polarities are such that the dust will move off the sensor and not opposite, which can happen as well. Magnetic EMF can be a funny thing, but getting those stringy 'hairs' from a Q-Tip inside the sensor box wouldn't be. Only lint free pec pads should be used in my opinion.
If using the blower, you will have some success, but your likely to have a few stubborn spots remain. Too much air and you risk damage to the shutter, too little, and you will probably just move the spot to another location.
A custom cut spatula, a pec pad, two drops of Eclipse, and some reading glasses will work wonders (don't laugh about the glasses...). The only method I have used that works first time, every time.
Ckw From UK - England, joined Aug 2010, 275 posts, RR: 19 Reply 20, posted (7 years 11 months 3 days 7 hours ago) and read 1163 times:
I'm with Jeff on this - does the trick for me. But for emergency in the field removal of a large (ie easily visible) speck, I'll use the "speck grabber" - followed by a proper clean on return home.
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