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Canon EF 70-200mm f/2.8L IS USM

02/14/2006 06:18:03 PM · #1

on what this might be? And how do I fix it?

I have tried both of my lenses and the mark is still there.

PhantomEWO

Canon EOS-5D Mark II

02/14/2006 06:22:37 PM · #2

Looks like something on the sensor, I hope not, I just bought a new sensor for my 20D because I tried cleaning it. Have you tried cleaning it in any way other than a bulb blower?

Canon EF 70-200mm f/2.8L IS USM

02/14/2006 06:23:57 PM · #3

Originally posted by PhantomEWO:

Looks like something on the sensor, I hope not, I just bought a new sensor for my 20D because I tried cleaning it. Have you tried cleaning it in any way other than a bulb blower?

No, I have not tried cleaning it...never done anything like that before...any tips on how to clean the sensor..

Message edited by author 2006-02-14 18:24:14.

ButterflySis

Canon EOS-50D

Canon EF 50mm f/1.8 II

02/14/2006 06:24:05 PM · #4

Yep, looks like a fiber of some sort.

PhantomEWO

Canon EOS-5D Mark II

02/14/2006 06:27:33 PM · #5

Originally posted by philup:

Originally posted by PhantomEWO:
Looks like something on the sensor, I hope not, I just bought a new sensor for my 20D because I tried cleaning it. Have you tried cleaning it in any way other than a bulb blower?

No, I have not tried cleaning it...never done anything like that before...any tips on how to clean the sensor..

Follow the instruction in the manual. Mode in a program mode, menu, sensor clean, remove lens, mirror is now up out of the way. Use a bulb blower but be very careful not to touch the sensor. After you have blown it real good, turn the power off and the mirror will flip back in place. Take a pic of the blue sky, set focus a minumum and f/25 or so. If there any dust bunnies they will show up then.

Good luck

LoudDog

Canon EOS-350D Rebel XT

Canon EF 17-40mm f/4.0L USM

02/14/2006 06:29:17 PM · #6

take a photo with a high aperture and it will be clear as day. Probably a hair.

Remove the lens and put the camera in clean sensor mode. This opens the shield over the sensor. You'll probably see what is on there. Cleaning it is another story. I haven't done it myself yet and I can't offer any advice other then don't do it unless you know what you are doing.

I have heard of people using a vacuum to suck it out, but do not use too much suction as it can ruin the sensor.

Good luck!

Digital Sensor Cleaning Techniques

02/14/2006 07:24:29 PM · #7

Thanks everybody!!! I will try cleaning the sensor later tonight.

Phillip

DjFenzl

02/14/2006 07:26:40 PM · #8

MrEd

Sony DSLR-A100

Sigma 15-30mm f/3.5-4.5 EX Aspherical DG DF for Minolta

02/14/2006 07:27:08 PM · #9

First try taking a photo using another lens, see if it's still there. Looks like it might be a smudge on the lens.

front_element

Nikon D700

Nikon AF-S NIKKOR 24-70mm f/2.8G ED

02/14/2006 07:27:23 PM · #10

Originally posted by philup:

Thanks everybody!!! I will try cleaning the sensor later tonight.

Phillip

Be careful! Only use a hand held blower 'gently' if you don't have the correct sensor cleaning device.

Take alook here: //www.chili-pix.ch/shop/ for an idea of what you'll need to do it properly.

bledford

Canon EOS-300D Rebel

Canon EF-S 18-55mm f/3.5-5.6

02/14/2006 08:17:56 PM · #11

Originally posted by LoudDog:

I have heard of people using a vacuum to suck it out, but do not use too much suction as it can ruin the sensor.

I have heard this is a bad idea because a) it can produce static electricity within the camera body and b) the suction will pull dust out of the air into the camera to be later dislodged and find its way onto the sensor. I would just use a manual blower.

Message edited by author 2006-02-14 20:18:24.

PhantomEWO

Canon EOS-5D Mark II

Canon EF 70-200mm f/2.8L IS USM

02/15/2006 11:52:20 AM · #12

Originally posted by philup:

on what this might be? And how do I fix it?

I have tried both of my lenses and the mark is still there.

Well was it a hair on the sensor? Did you get it fixed?