Sensor cleaning?

beginner
Posted 21/03/2011 - 18:47 Link
[quote:3496ace15f="dannyh"]Well to clarify its definately on the sensor (I dont understand though how it DOESENT show up in the dust alert picture). It shows up in my pics. And there is also stubborn dust on the mirror! I'm going to try a hairdryer on cold to see if i can blow it out.....wish me

****************DONT DO THAT!**************

A HAIRDRYER PULLS IN AIR FROM IT'S SURROUNDINGS!...YOU'LL END UP MAKING THINGS WORSE!......
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!
DanielH
Posted 21/03/2011 - 18:49 Link
yes it does but it also has a three layer filter on the back! BTW think its worked-phew
beginner
Posted 21/03/2011 - 18:54 Link
Set a lens to F22 and take a shot of a piece of white card...or a clean white wall....then you will see if it's worked!...good luck!
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!
pianoman
Posted 21/03/2011 - 18:57 Link
You deserve the success for your bravery
All the best

David
Anvh
Posted 21/03/2011 - 19:17 Link
beginner wrote:
Set a lens to F22 and take a shot of a piece of white card...or a clean white wall....then you will see if it's worked!...good luck!
And over expose the photo with 2 or 3 stops
Stefan
Comment Image

K10D, K5
DA* 16-50, DA* 50-135, D-FA 100 Macro, DA 40 Ltd, DA 18-55
AF-540FGZ
philmerrin
Posted 22/03/2011 - 07:38 Link
I've had three Pentax dSLR's. The first was a k100d and was a real dust bug. This body had no shake, so you had to clean the sensor manually. After doing much reading I realised the most cost effective way to clean the sensor was to purchase a small quantity of isopropyl alcohol from a pharmacist. Which I did, make sure it's the really pure stuff. You can gently wipe the sensor with lens cleaning paper sellotaped to small flat strip of rigid plastic. make sure the cleaning edge is well and truly wrapped with multiple layers of cleaning paper and there are no exposed edges. This is basically the only method for anything smeared on the sensor.
Only dip enough alcohol onto your swab, if you dip too much then don't worry because with quality alcohol evaporates really quickly. swipe the swab from side to side in one direction only from top to bottom and if done carefully but thoroughly your screen should be clean.

A little bit after I purchased on eBay one of those Giotto rocket blowers, I got the large model for around 7 or 8 quid delivered. these are a great puffer, easy to use and the air only flows one way through a non-returnable valve in the rear of the rocket. This is very important as you won't want to return the dust you've just blown off the sensor. I always hold the camera body face down so the dust can fall out. I never point the nozzle that deeply into the camera body, as you won't want to go poking the sensor.

My second camera was a k200d with the shake feature and sealed body. I don't recall ever getting dust or smears on this cameras sensor despite using it for two years.

Recently i switched the k200d for the K-x, a superb camera imo better than the k200d for true white balance in images. sadly the dust issue was also back. The Giotto rocket has sorted out the dust spots thus far, the shake facility hasn't cut it with the K-x, mostly just redistributing it.

Sorry about the huge essay but sensor cleaning is often mis-understood, it's not a job for professionals only. the sensor itself is not the frail thing it's often depicted. Obviously don't go at it like the proverbial bull in a china shop. Good luck.
DanielH
Posted 22/03/2011 - 11:02 Link
Phil,

thats really helpful thanks. Ive only had the k-r since Jan and am having the same experience you've had with your K-x. Ive got some isopropyl alcohol in the garage which ive used for cleaning lenses before so now i just need some wipes and a dust blower. The vaccuum cleaner isnt a very good idea! it removed the largest dust blob but got another one and dust all over the focussing screen. Still it's better than before i started.

D
flat4
Posted 22/03/2011 - 12:23 Link
I had a K200d for 2 years. Shot around 50.000 photos with it. Occasional rocket blower treatment did the job in most of the times. One time, I had some real tough stains on the sensor, so I bought Green Clean wet % Dry cleaning swabs. It does it's job quite nicely.

On my current K-5, I just blow the insides with the rocket blower from time to time and I haven't got any stain issues. (except the stain issues on my first K-5, which our distributor kindly replaced.)
Link to my PPG
bychan
Posted 22/03/2011 - 23:34 Link
philmerrin wrote:
I've had three Pentax dSLR's. The first was a k100d and was a real dust bug. This body had no shake, so you had to clean the sensor manually. After doing much reading I realised the most cost effective way to clean the sensor was to purchase a small quantity of isopropyl alcohol from a pharmacist. Which I did, make sure it's the really pure stuff. You can gently wipe the sensor with lens cleaning paper sellotaped to small flat strip of rigid plastic. make sure the cleaning edge is well and truly wrapped with multiple layers of cleaning paper and there are no exposed edges. This is basically the only method for anything smeared on the sensor.
Only dip enough alcohol onto your swab, if you dip too much then don't worry because with quality alcohol evaporates really quickly. swipe the swab from side to side in one direction only from top to bottom and if done carefully but thoroughly your screen should be clean.

A little bit after I purchased on eBay one of those Giotto rocket blowers, I got the large model for around 7 or 8 quid delivered. these are a great puffer, easy to use and the air only flows one way through a non-returnable valve in the rear of the rocket. This is very important as you won't want to return the dust you've just blown off the sensor. I always hold the camera body face down so the dust can fall out. I never point the nozzle that deeply into the camera body, as you won't want to go poking the sensor.

My second camera was a k200d with the shake feature and sealed body. I don't recall ever getting dust or smears on this cameras sensor despite using it for two years.

Recently i switched the k200d for the K-x, a superb camera imo better than the k200d for true white balance in images. sadly the dust issue was also back. The Giotto rocket has sorted out the dust spots thus far, the shake facility hasn't cut it with the K-x, mostly just redistributing it.

Sorry about the huge essay but sensor cleaning is often mis-understood, it's not a job for professionals only. the sensor itself is not the frail thing it's often depicted. Obviously don't go at it like the proverbial bull in a china shop. Good luck.
My K100D Super was a real dust magnet, and I once paid £35 to get it cleaned in a camera shop (waste of money, as it was hardly any better when I got it back).

I then invested in Pentax's own sensor cleaner, and have only had to use it once on the Kx since I've had it (December 2009). I don't know if it's still available, but it seems to work very well, although IMHO is vastly over priced.

Here is a demo of it in action link

Regards
Adrian
K5IIs, Sigma 10-20, Pentax DA 16-85, Pentax DA 55-300, Pentax 70 Ltd, Metz 44 AF-2.
Flickr: https://www.flickr.com/photos/ambott/
DanielH
Posted 23/03/2011 - 14:06 Link
Well,

thanks to my soft fleecy hat (non linting) and a can of isopropyl alcohol the sensor has been cleaned and the dust bunnies have been banished for now!

Whoop

Dan
greynolds999
Posted 23/03/2011 - 14:25 Link
I really hope this has solved your problems, despite your very unusual methods.

But I will remember this thread if I ever see your equipment in the second-hand sales column!
gartmore
Posted 23/03/2011 - 14:35 Link
greynolds999 wrote:
I really hope this has solved your problems, despite your very unusual methods.

But I will remember this thread if I ever see your equipment in the second-hand sales column!
I have an ever growing list of people I will never buy from
Ken
“We must avoid however, snapping away, shooting quickly and without thought, overloading ourselves with unnecessary images that clutter our memory and diminish the clarity of the whole.” - Henri Cartier-Bresson -
techno-terminator
Posted 23/03/2011 - 14:42 Link
let the education continue

proud owner of a couple of cameras and a few bits and bobs
DanielH
Posted 23/03/2011 - 18:43 Link
Come on guys you can't damage a camera with the stuff that ive been using. If i thought that i would never have tried the hairdryer or fleecy hat. I do take care of my kit, still got my 1st ever digital camera and it still works fine!

D
pianoman
Posted 23/03/2011 - 20:22 Link
Well I would buy a camera from you,Now a haridryer ?no chance you just abuse them
All the best

David

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