Help ! What is this mark on my photos ?
Posted 10/10/2010 - 18:51
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It looks like a dirty sensor. It would normally appear on every picture.
Posted 10/10/2010 - 18:58
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thanks..
a dirty sensor - is that normal with such a new camera ?
a dirty sensor - is that normal with such a new camera ?
Posted 10/10/2010 - 18:59
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Depends how fast and clean you are with your lenses.
I dirtied my sensor quite fast with first DSLR, I've been scrupulously careful since. It was fraught deciding to clean the sensor myself.
I dirtied my sensor quite fast with first DSLR, I've been scrupulously careful since. It was fraught deciding to clean the sensor myself.
Lurking is shirking.!
Posted 10/10/2010 - 19:07
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Seems like the sensor is dirty, I recently took my camera to a shop for a -sensor clean, it just needed a blast of air on the sensor-job done and no charge. could be same for you.
Do you change lenses a lot? or have you?
Which lenses are you using and what settings have you had the camera on when the photos aren't that sharp? particularly shutter speed.
Regards
Chris
Do you change lenses a lot? or have you?
Which lenses are you using and what settings have you had the camera on when the photos aren't that sharp? particularly shutter speed.
Regards
Chris
Posted 10/10/2010 - 19:16
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thanks folks - I have changed the lens less than half a dozen times and I am really careful !
It doesn't appear when I turn the camera around and take a portrait photo.
I am still experimenting and taking most photos in auto or landscape - I then try taking some in Av mode to experiment.
Even on auto I have been really disappointed with the focusing compared to my old panasonic bridge camera - Its got to the stage where I would swap back if I could - surely that can't be right ?
It doesn't appear when I turn the camera around and take a portrait photo.
I am still experimenting and taking most photos in auto or landscape - I then try taking some in Av mode to experiment.
Even on auto I have been really disappointed with the focusing compared to my old panasonic bridge camera - Its got to the stage where I would swap back if I could - surely that can't be right ?
Posted 10/10/2010 - 19:25
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Posted 10/10/2010 - 19:30
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Is the focussing issue happening when you are mainly shooting in low light ?
You are more likely to see dirty sensor spots against the sky, compared to portrait shots.Which lenses do you use?
Regards
Chris
You are more likely to see dirty sensor spots against the sky, compared to portrait shots.Which lenses do you use?
Regards
Chris
Posted 10/10/2010 - 19:30
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Take the lens off the camera, point the camera to a white wall or a4 paper,
take a photo, if the same mark is there then its the sensor, if not it's your lens or filter,
Jack.
take a photo, if the same mark is there then its the sensor, if not it's your lens or filter,
Jack.
Posted 10/10/2010 - 20:06 - Helpful Comment
Link
I too had this when my Kx was new. It looks like sensor dust to me. A puff with a blower cured it and I carry one with me now. In case that doesn't work I've also invested in an artic butterfly for the future as Hubby also has a Kx. Changing lenses in a dusty old church didn't help. Don't forget you can lose the spots in any editing program!
As for focus - I went to dslr for better focus and to be honest I've found it poor at lower shutter speeds but that's partly me and the mirror I expect. I've yet to play with the tripod and the remote and mirror lock up but shots with the macro lens have been pretty good. I'm just currently blaming shaking hands and moving too fast after I press the shutter!
I used my old compact at a 'do' the other night in low light and the shots were absolutely dreadful!
As for focus - I went to dslr for better focus and to be honest I've found it poor at lower shutter speeds but that's partly me and the mirror I expect. I've yet to play with the tripod and the remote and mirror lock up but shots with the macro lens have been pretty good. I'm just currently blaming shaking hands and moving too fast after I press the shutter!
I used my old compact at a 'do' the other night in low light and the shots were absolutely dreadful!
Lazydaisy25
Pentax Kx, DAL 18-55mmm, DAL 55-300, soon... DFA 100 Macro, Fuji S8100
Pentax Kx, DAL 18-55mmm, DAL 55-300, soon... DFA 100 Macro, Fuji S8100
Posted 10/10/2010 - 20:06 - Helpful Comment
Link
If the image is shot with a shallow depth of field, i.e. around F2.8 then most sensor dust will not show. However in bright sunshine as your shot's are, it is likely around F16 plus, which creates a large depth of field, thereby revealing the dust on the sensor.
Posted 10/10/2010 - 20:07
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Purchase the Arctic Butterfly celaner tool, one of the most useful accessories a tog can carry.
Posted 10/10/2010 - 20:12
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thanks folks - I must admit I am feeling very downhearted at the moment !
Chris - I am using the standard kit lenses - 18-55 & 50-200
jackitec - I think the K-X has a tool to do that ? It takes a photo and shows a white screen - there is nothing on it !
Chris - I am using the standard kit lenses - 18-55 & 50-200
jackitec - I think the K-X has a tool to do that ? It takes a photo and shows a white screen - there is nothing on it !
Posted 10/10/2010 - 20:14
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what snappychappy said pretty-much : take some shots of the sky, at different apperatures in AV Mode - say F4 F10 F16 - if the "blob" changes from one shot to another, its sensor dust - get an Artic Butterfly from SRS, clean it several times, and try to avoid Pollen in the future... and you've got a handy cleaner for when you can't!
Still shooting in the dark (literally and metaphorically)...
Posted 10/10/2010 - 20:52
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jackitec wrote:
Take the lens off the camera, point the camera to a white wall or a4 paper,
take a photo, if the same mark is there then its the sensor, if not it's your lens or filter,
Jack.
It's grease and things like that that you will see if it's on a lens but dust or an hair you will only see on the sensor if you use a high f-number like f/11 or higher.Take the lens off the camera, point the camera to a white wall or a4 paper,
take a photo, if the same mark is there then its the sensor, if not it's your lens or filter,
Jack.
This seems to be just dirt on the sensor, it's one of the problems with interchangeable lens systems.
It's quite easy to clean it yourself, the best tool is probably the artic butterfly.
It does cost quite a bit but it works for a long time.
Stefan
K10D, K5
DA* 16-50, DA* 50-135, D-FA 100 Macro, DA 40 Ltd, DA 18-55
AF-540FGZ
K10D, K5
DA* 16-50, DA* 50-135, D-FA 100 Macro, DA 40 Ltd, DA 18-55
AF-540FGZ
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63 posts
15 years
Derby
Can someone tell me what is causing this mark on my photos please ?
Here is an example - just above the climbers head...
Its really annoying as its not on every photo - I also keep getting little round dots on photos
My KX is only a month or so old and I am getting really fed up with it tbh - not only do I keep getting marks on the photos but the focus doesn't seem that sharp and the colours aren't great.
Do I need to tweak the settings within the camera ?
thanks