Strange Dark Line at Camera

Hi Everyone,

Really need some advice and help here, some time ago I noticed a strange dark line in most of my pictures whenever i used my 18mm-135mm, at first i thought this can be easily removed for post processing, but lately the strange lines added more, now looked like 2 big worms in the top left. When i used another lens this strange line is not even exist on any of the pictures, now it makes me really sure this must be the lens not the camera, I sent it to the service center and after they checked they said nothing strange with the lens, and they afraid its the body instead. The problem here are I will travel soon in 8 days, and sending the lens and body to check took more than 10 days. I am very sure its the lens, but they kept saying they didn't see the strange line when they tried :S

Here i attach the picture

With 18-135mm ( noticed the top left )



Any idea what this might be?

As Steve says, fibre or hair on the sensor.

Rocket blower should shift it, just be careful not to get the nozzle too close to the sensor.

did you say it was just with the18/135 if so give the lens a good cleanas if its not doing it with other lenses then its the lens
if you have a filter on take the filter off and clean inside as it may be inbetween the two


regards stu

The lens was checked at the service centre.
Being a zoom lens on a bright day with a large dof, it would have been used with a small aperture which would have made the fibres visible.

Yes it's defo something on the sensor - been there done that!

I had exactly the same form of "squiggle" on my K10.
It was caused by a dirty sensor and I had it cleaned.
The repairer said it was probably caused by a piece of pollen!!!

Hi Everyone,

I tried to clean both of the lens and body before, but this lines persist in pictures, sending the body for service center would be too late now since need this for travelling, so i will manually clean this with the rocket blower as everyone suggested and asked them to sent me back the lens again to see my luck, Thank you so much for the opinion and tips, really appreciate it.

Kinda sad in my country pentax is minority, even to check lens i had to sent to capital and takes so many days only to hear from them, i love this camera way too much

I would recommend giving the rocket blower a few hard puffs just before using on the camera. Dust can settle in the blower - and this gets it out first!

Once done you can use the mirror lock up cleaning function and carefully give the sensor a blow - don't touch it though.

The dust alert function in the camera can be used before this to show where the dust is physically on the sensor

Matt

Is the dust alert image on the screen the same way up as the sensor, or is it inverted?

Dust alert on my K-x shows a couple of small dots at the top of the screen, but when I flick the mirror up the dust particles are too tiny to be seen, so I don't know if they are at the top or bottom of the sensor (haven't actually tried any blower or other cleaning yet).

Martin