Hello everyone,
Iīd appreciate some help with a problem of vertical pattern lines that show in my images even at base ISO. See example below.
Iīm very new to Pentax, got a K-m a few months ago and was so happy with it that recently i bought a K-7 to keep experiencing with the brand in order to decide if i wanted to move completely to this system.
Of course it was a used model, and when i met the previous owner i tested the camera and everything seemed to go well. I didnīt use the camera for some days due to lack of time and a few days later i bought a grip for it and installed it right away, but not the original from Pentax.
I went out to test the camera for a whole day and i begun finding many problems that got me worried, very underexposed images, lots of incredible noise ruining the shot at base ISO in the middle of the day, and many other problems that were not constant, as some shots came out nice. Let me add that i did install the battery in the grip, not in the camera body (this might be important, though at that time i didnīt know).
I found some adjustments in the menus from the previous owner that i didnīt like so i decided to reset the camera to see if those might be the cause of the problems, and at the same time moved the battery from the grip to the body (still unaware if this might be important).
Last night i found some posts here (related to the K-10D) in relation to that old VPN problem saying that the grip might cause electric interferences and those might show in the image, but my camera is not a K-10D but a K-7. Iīve since tested the camera and the underexposed thing and crazy noise seems to be gone, but now i find those vertical lines showing up in many images, not really very visible unless you zoom in, but i guess those should not be there.
Now that i learnt on the possible grip problems Iīll try over the weekend by removing the grip and see if thereīs some improvement, but in the meantime iīd appreciate some input on other possible causes of this, or if someone else has experienced this.
Iīm still not sure if this problem is that banding shown in images with that VPN problem.
The camera has the original battery, still holding charge very well, and the lens used is the kit one, 18-55 WR, and i shoot RAW+ (PEF) and Manual mode always.
The cropped test image showing the problem, a shot of the sky so itīs easier to see:
Thanks