black mark on images
After returning from a trip to America i noticed that in the far right corner of the images is a black mark, no matter how much i try and clean the lens and camera the mark will not go. This happened to the first D40 i had, until i returned it for this new one a few months later. The mark also appeared in the same place one both cameras strangely.
Any suggestions folks
Dave, it sounds like dirt on your camera's sensor. Go take a picture of some clear (no clouds) sky with the camera stopped down to f/22. This will show your sensor dirt very clearly.
thanks Rich, to be honest i have tried some test shots outside on a clear day and the mark is right in the top corner, there are no other visible marks anywhere else i can see. Whats the best method for cleaning.
Please post a pix or 2? It's hard to guess without seeing.
The first place to start is with using a hand compressor Rocket Blower
Originally Posted by westy79
You would go into the menu and choose the sensor cleaning option and when the shutter opens you hold the camera upside down and blow a lot holding the camera lens mount down and hoping the dust becomes dislodged and the problem goes away.
If this doesn't remove the dust then you have the option between getting a more expensive sensor cleaning kit with swabs or taking the camera to a store to have cleaned w/o the risk of you damaging the sensor.
Great advice Rich, has the D40 got a sensor cleaning option then?
It doesn't have a automatic sensor cleaning system, but you can raise the mirror to access it for cleaning.
On my D50 it the option is called "Spiegel Omhoog" which is dutch for Raise Mirror. It's somewhere in the menu with the tool icon.
I clean the sensor most of the time with a blower, but sometimes, when the lens is a bit more dirty I use sensor swabs. With the sensor swabs you should be careful not to use any other liquid than the one that's sold with the swabs. I used cleaning sollution of another brand and that sollution left a bit of residue on my sensor, which showed up in many of the pictures I took in Australia. The post processing took a lot longer because of this.
When you are looking at the sensor with the mirror raised you will easily be able to see any dust that is on it but remember that it is opposite to where you think it is. If the dust in the pictures appears in the top right then when you look at the sensor it will be located towards the bottom left.
thanks for all the useful advice as always. I purchased one of those rocket blowers which seems to have done the trick. There is now a very faint black mark towards the bottom of the frame but i can live with that..... for now!