Hi,
I bought my first DSLR the other day from ebay, a pentax k5 with the factory 18-55 lens bundled with a sigma DG70-300.
I am having a weird issue with the shutter in all but the green mode. I press the button all the way and the camera starts to beep, then I have to press it again to take a shot. If I don't it just keeps beeping.
Also the sigma lens has some strange worm like marks on the perimeter of the front lens. Is this normal?
I am attaching 2 images of the lens.
Should I return it?
Thank you.