Checking sensor cleanliness


Father Ted

Link Posted 24/07/2009 - 21:07
What is the best way to check my sensor for cleanliness, before taking my shots?

Should I take photos of a blank sheet of paper etc?
Do I focus on the paper, do I have aperture open or closed etc?

Cheers!
Getting there! Thanks to you guys

Pentax K10d, *istDL, Kit lens ( 18-55mm ), 50mm f1.7 lens, Tamron 70-300mm lens, Prinzflex 70-162 manual lens, Various old flashes.

pschlute

Link Posted 24/07/2009 - 21:21
I find the best is to go outside on a blue sky day and stop down to f22. Take a picture of the sky.

The key is to stop right down.
Peter



My Flickr page

Hardgravity

Link Posted 24/07/2009 - 21:49
Don;t know about aperture but a blank canvas, such as a wall, helps.

If the subject has any marks they may show up on the screen as dust, I know, I tried to remove the wallpaper pattern from MY sensor!
Cheers, HG

K110+DA40, K200+DA35, K3 and a bag of lenses, bodies and other bits.

Mustn't forget the Zenits, or folders, or...

I've some gallerieshere CLICKY LINK! and my PPG entries.

Father Ted

Link Posted 24/07/2009 - 22:04
Hardgravity wrote:
I know, I tried to remove the wallpaper pattern from MY sensor!

LOL!!
That is funny

Probably wasn't at the time though
Getting there! Thanks to you guys

Pentax K10d, *istDL, Kit lens ( 18-55mm ), 50mm f1.7 lens, Tamron 70-300mm lens, Prinzflex 70-162 manual lens, Various old flashes.

Hardgravity

Link Posted 24/07/2009 - 22:31
I was so worried I had to go and have a Large G'n'T!

It looked much better afterwards.
Cheers, HG

K110+DA40, K200+DA35, K3 and a bag of lenses, bodies and other bits.

Mustn't forget the Zenits, or folders, or...

I've some gallerieshere CLICKY LINK! and my PPG entries.

Oggy

Link Posted 24/07/2009 - 23:46
Hardgravity wrote:
I was so worried I had to go and have a Large G'n'T!

If I photograph the wallpaper, can I have a G'n'T

George Lazarette

Link Posted 25/07/2009 - 09:05
pschlute wrote:
I find the best is to go outside on a blue sky day and stop down to f22.

And in the UK?

G
Keywords: Charming, polite, and generally agreeable.

pschlute

Link Posted 25/07/2009 - 09:23
George Lazarette wrote:
pschlute wrote:
I find the best is to go outside on a blue sky day and stop down to f22.

And in the UK?

G

Well , that's what the polariser is for of course George. !!
Peter



My Flickr page

Hardgravity

Link Posted 25/07/2009 - 09:36
pschlute wrote:
George Lazarette wrote:
Quote:
I find the best is to go outside on a blue sky day and stop down to f22.

And in the UK?

G

Well , that's what the polariser is for of course George. !!

It is?

I thought they were for putting coffee cups on!
Cheers, HG

K110+DA40, K200+DA35, K3 and a bag of lenses, bodies and other bits.

Mustn't forget the Zenits, or folders, or...

I've some gallerieshere CLICKY LINK! and my PPG entries.

Bob and his Pentax

Link Posted 03/08/2009 - 18:12
I always remove the lens select B mode and take a picture of something white (white computer screen) move the camera while taking picture to ensure that only dust on the sensor screen shows up
Good luck

Bob

Pentax user since 1978, Digital since 1997.
Kit includes: K-7, K20D, K10D, *istDS, full set DA* lens, etc

mikew

Link Posted 03/08/2009 - 18:32
I assume you're kidding? Surely removing the lens while the sensor is charged is a sure fire way to attract dust?

Mike
---------------------------------------------------

You can see some of my shots at my Flickr account.

greynolds999

Link Posted 03/08/2009 - 22:18
I use the smallest aperture, defocus the camera and aim at a white wall or ceiling, and make sure my hands are nice and unsteady on a long exposure . That way I know anything I see is on the sensor.
My Photobucket

beginner

Link Posted 03/08/2009 - 22:29
I'm a sky man myself!....doesn't have to be blue....grey works just as well!.....good job!
K20D...ist DS ,DA18/55,DA16/45.DA* 50/135,"A"1.7 50MM..."A" 70/210..M 50mm f2...Tamron 90mm macro,28/300 Tamron,200/500 Tamron 6.9....A Pentax DA*300... Sigma10/20,FA31mm 1.8 Ltd*********,FA 77mm Ltd!
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