| Author | Thread |
|
|
05/19/2011 06:05:28 AM · #1 |
| I went to the beach few days ago with 2 lenses - Canon 15-85 and 70-200. I just noticed that all 15-85 have many spots on all images. The 70-200 have some spots. I thought I had a dirty sensor so I took photos of the sky with a lens I did not take to the beach, Canon 50mm f1.8, and I cannot see any spots! Any ideas what the problem is? |
|
|
|
05/19/2011 06:25:40 AM · #2 |
| probably something on or in the lens. i'm guessing you did your sensor check at f/22 at the your body's lowest iso? |
|
|
|
05/19/2011 06:26:11 AM · #3 |
| Sounds like a lens issue. Fine sand getting in somehow? |
|
|
|
05/19/2011 06:28:05 AM · #4 |
Were you shooting at 1.8 with the 50? Try stopping it down to F16 or more, see if it replicates. Also, the dust spots, if they are on the sensor, would always be in the same place for the 70-200 and the 15-85, since it's external of the lenses. Alternately, you could have gotten some gunk on the rear elements of your lenses. Gunk on the rear will have a MUCH larger effect than anything on the front.
Message edited by author 2011-05-19 06:28:23. |
|
|
|
05/19/2011 06:37:55 AM · #5 |
I did the 50mm test on f8 so I just re-did it at f22. Unfortunately the spots are there hence the sensor needs cleaning. Should I pay $100 for a professional clean or try to learn Copperhill or Arctic brush? Which is easier to use? I bought the camera via eBay so I don't have warranty to worry about but I still need the camera to work!
Here is an image of the spots (not the best, it is evening here):
They are uniform in size but very in intensity.
Message edited by author 2011-05-19 06:45:40. |
|
|
|
05/19/2011 07:20:45 AM · #6 |
Looks like classic dust to me !
If it bothers you, you can clean it or have it cleaned. I have done it many times on my D70 with Copperhill. I feel it is safe as long as you follow instructions. I'd say the one to heed most is USE THE PAD ONCE FOR EACH SWIPE. If you pick up some dust or other flake, and then use the same "side" of the pad to swipe again, you could dig into your sensor with the "dirt...flakes".....other than that...be careful !
Originally posted by MargaretN:
I did the 50mm test on f8 so I just re-did it at f22. Unfortunately the spots are there hence the sensor needs cleaning. Should I pay $100 for a professional clean or try to learn Copperhill or Arctic brush? Which is easier to use? I bought the camera via eBay so I don't have warranty to worry about but I still need the camera to work!
Here is an image of the spots (not the best, it is evening here):
They are uniform in size but very in intensity. |
|
|
|
|
05/19/2011 08:02:50 AM · #7 |
| I can't get Copperhill here. I ordered Photo Solutions Sensor Swabs. I hope it works OK! |
|
|
|
05/19/2011 06:39:04 PM · #8 |
Really???? I can not stand people spending money and waiting... I cleaned 7 bodies this week, 5 within the past 2 hours in prep for airshow. A few minutes ago I cleaned a 7D, 40D, 40D (different body), 30D and an XS. The other day I cleaned a 30D and a 5d that just spent 3 days in the shop for cleaning and came out like sh!t. Do not send your camera out and do not spend money on product as it just is a waste. A cotton swab can not scratch GLASS!
I have done it for 10 years and never had an issue. NEVER had a camera came out of a pro shop that was cleaner that what I do and always have to reclean all my friends bodies when the come out of the shop because I show them how to equalize in photoshop and my sensor is always cleaner than their just returned "so call cleaned" camera. I will clean it for them and they will NEVER send it out again.
This is worded strong for a reason.... Clean your own sensor with a bulb blower and learn how to check to see if it is dirty. You try hard to make sure your picture is properly exposed... Do not let a dirty sensor get in the way of the "perfect picture"....
HOW I CLEAN MY LENS
Message edited by author 2011-05-19 18:40:54. |
|
Home -
Challenges -
Community -
League -
Photos -
Cameras -
Lenses -
Learn -
Help -
Terms of Use -
Privacy -
Top ^
DPChallenge, and website content and design, Copyright © 2001-2025 Challenging Technologies, LLC.
All digital photo copyrights belong to the photographers and may not be used without permission.
Current Server Time: 11/05/2025 05:18:14 PM EST.
