How do you keep your end clean
Posted 29/05/2010 - 14:14 - Helpful Comment
Link
Just carry a pack of these with you.
http://www.jessops.com/online.store/products/18369/show.html
http://www.jessops.com/online.store/products/18369/show.html
Posted 29/05/2010 - 14:22 - Helpful Comment
Link
Small blower for the hairs dust.
Pec Pads and Eclipse fluid for the grease.
Clean before I go then blower and few pec pads in the case on the go seem fine.
Pec Pads and Eclipse fluid for the grease.
Clean before I go then blower and few pec pads in the case on the go seem fine.
Lurking is shirking.!
Posted 29/05/2010 - 14:53 - Helpful Comment
Link
A Pentax microfibre cloth is all you need.
Best regards, John
Posted 29/05/2010 - 17:40 - Helpful Comment
Link
Quote:
and I'm very bored with seeing the same marks on every single shot
Its more likely the marks on your images are from dirt on the sensor, a lens would have to be really grubby or have a large spot of dirt before it affected image quality to that extent.and I'm very bored with seeing the same marks on every single shot
Of course theres no harm in keeping lenses clean anywyay.
EDIT; THREE typing errors, and I've not even had a beer yet.
Posted 29/05/2010 - 17:52 - Helpful Comment
Link
I agree with Fatspider - a little dirt on the lens will not affect image quality. See:
http://www.lensrentals.com/news/2008.10.30/front-element-scratches
Much more likely to be dirt on the sensor that's causing marks on your images.
http://www.lensrentals.com/news/2008.10.30/front-element-scratches
Much more likely to be dirt on the sensor that's causing marks on your images.
Posted 29/05/2010 - 18:20
Link
Thanks for your advice all - I will do some test shots tomorrow if the weather improves - have already had a good puff of the sensor, didn't see anything. The camera is set to auto-shake everytime I turn it on, so I'd expect dust to move about if it was on the sensor.
The worst offender is in every shot (not the slight vignetting in the corner probably due to hood on a bit wonky again) - the one about an 1" in on these 100% crops :
F13 :
vs
F4.5
(put it in Matrix mode as an experiment instead of my usual Centre, which caused me some AF issues later that evening, grr...)
The worst offender is in every shot (not the slight vignetting in the corner probably due to hood on a bit wonky again) - the one about an 1" in on these 100% crops :
F13 :
vs
F4.5
(put it in Matrix mode as an experiment instead of my usual Centre, which caused me some AF issues later that evening, grr...)
Still shooting in the dark (literally and metaphorically)...
Posted 29/05/2010 - 18:44
Link
I thought I had that problem - until I realised I needed to clean my laptop screen
Posted 29/05/2010 - 19:08 - Helpful Comment
Link
the photos show evidence of dust on the sensor. try a rocket blower and failing that the pentax sensor cleaning kit.
Posted 29/05/2010 - 20:48
Link
ok thanks. Had already used the rocket blower before posting, didn't see anything, but will do some test shots tomorrow to be sure. Finding those two adjacent shots at different appature made me think it was the sensor... although the CPL was filthy by the end of the Prom, so the Top Tips about specific cleaning cloths to get are much appreciated!
Still shooting in the dark (literally and metaphorically)...
Posted 29/05/2010 - 20:50
Link
ISO wrote:
I thought I had that problem - until I realised I needed to clean my laptop screen
yes, I had thought of that, especially after going from photo to photo quickly and seeing one mark not move - a quick drag about of the window makes it obvious that's in the image not the screen though!
I thought I had that problem - until I realised I needed to clean my laptop screen
Still shooting in the dark (literally and metaphorically)...
Posted 29/05/2010 - 22:06 - Helpful Comment
Link
This is the K-x? If so I think it has a dust alert system like the K-7.
It should be in the setup menu, probably screen 4. Once selected point the camera at a blank white wall or a uniformly bright subject (I usually zoom in to a bit of bright sky) and press the shutter.
The resulting display will show if there is any dust on the sensor and exactly where to point your blower . This image is also saved to the memory card.
Glyn
It should be in the setup menu, probably screen 4. Once selected point the camera at a blank white wall or a uniformly bright subject (I usually zoom in to a bit of bright sky) and press the shutter.
The resulting display will show if there is any dust on the sensor and exactly where to point your blower . This image is also saved to the memory card.
Glyn
Posted 29/05/2010 - 22:13 - Helpful Comment
Link
Flossie,
from http://www.bythom.com/cleaning.htm using a small aperture shows up the dust better than wide apertures.
"The Test, Want to be appalled by how much dust is already on your sensor filter? Using a physically small aperture (e.g., a big number, such as f/16), take a picture of a plain white surface (wall, ceiling, sheet of paper, whatever), open the shot in Photoshop and apply Auto Levels. Bingo! Assuming that your plain white surface was really plain and white, all that gook you see is stuff sitting on top of your sensor filter."
I cleaned a sensor manually with some swabs from ebay and Eclipse E2. It took a couple of goes to get the technique right but worked. And was cheaper than sending it off. But it was very very scary.
I have been a bit more careful when swapping lenses recently.
from http://www.bythom.com/cleaning.htm using a small aperture shows up the dust better than wide apertures.
"The Test, Want to be appalled by how much dust is already on your sensor filter? Using a physically small aperture (e.g., a big number, such as f/16), take a picture of a plain white surface (wall, ceiling, sheet of paper, whatever), open the shot in Photoshop and apply Auto Levels. Bingo! Assuming that your plain white surface was really plain and white, all that gook you see is stuff sitting on top of your sensor filter."
I cleaned a sensor manually with some swabs from ebay and Eclipse E2. It took a couple of goes to get the technique right but worked. And was cheaper than sending it off. But it was very very scary.
I have been a bit more careful when swapping lenses recently.
Lurking is shirking.!
Posted 30/05/2010 - 08:51 - Helpful Comment
Link
The 'blobs' at top left of your photo's is sensor contamination. My recommendation is to get yourself an Arctic Butterfly from Visible Dust. IMHO it's the best sensor cleaner there is. It's all I ever use. I've never wet cleaned my sensors in 2 - 3 years.
Using a blower to clean dust from a sensor can cause damage to the coatings of the high pass filter which covers the sensor, if you were to touch it with the blower's nozzle.
Sensor contamination is not just dust either. Stubborn particles that resist the efforts of a blower are probably pollen, which is slightly sticky.
If I were going to spend much time taking photos by the sea, I would put a UV filter over the lens to protect it from salt spray and sand, which you did.
When changing lenses, hold the body face down to avoid anything falling in to the mirror box. Carry a large bin bag in your kit for windy/dusty environments for lens changing.
Using a blower to clean dust from a sensor can cause damage to the coatings of the high pass filter which covers the sensor, if you were to touch it with the blower's nozzle.
Sensor contamination is not just dust either. Stubborn particles that resist the efforts of a blower are probably pollen, which is slightly sticky.
If I were going to spend much time taking photos by the sea, I would put a UV filter over the lens to protect it from salt spray and sand, which you did.
When changing lenses, hold the body face down to avoid anything falling in to the mirror box. Carry a large bin bag in your kit for windy/dusty environments for lens changing.
Peter E Smith - flickr Photostream
Posted 30/05/2010 - 11:49
Link
Update :
There definatly is some annoying dust / pollen in there, but it now seems to have migrated to the viewfinder instead of the sensor, and careful brushing and blowing isn't getting it out completely. I shall get a cleaning kit (one of the Artic Butterflys maybe) for the internals, and some wipes for the lenses!
My Thanks to everyone! Probably a side-effect of the amount of lens changing I do, I am working on rationalising these...!
There definatly is some annoying dust / pollen in there, but it now seems to have migrated to the viewfinder instead of the sensor, and careful brushing and blowing isn't getting it out completely. I shall get a cleaning kit (one of the Artic Butterflys maybe) for the internals, and some wipes for the lenses!
My Thanks to everyone! Probably a side-effect of the amount of lens changing I do, I am working on rationalising these...!
Still shooting in the dark (literally and metaphorically)...
Add Comment
To leave a comment - Log in to Pentax User or create a new account.
848 posts
16 years
Twickenham
I've just been looking at the pictures I took yesterday, had a wander along Brighton seafront (down for the day on work) with the 12-24 (Hood & Hoya Pro1 CPL) - and I'm very bored with seeing the same marks on every single shot. Argh!
Obviously I had some dirt on the lens I hadn't noticed before I set off (grrrr!)...but apart from that, by the time I'd got to the end, the CPL was filthy with little salt-spray marks and I had to take the it off to get some final shots, which suffered rubbish skys as a result.
Annoyingly, I didn't have my LensPen with me (which is the only cleaning device I have apart from a blower from ephotozene shop), so had to just pack it all away.
I've just spent quite a while today cleaning both the filter and the lens, and its seems to me this isn't something I could have realistically done properly standing on the seafront anyway!
Anyone got any tops tips? some magic Cloths / Wipes? Protective thingies? Better care & attention?