Help please... Canon 70d + Sigma 120-300 OS image error

[martinslade]

Any help much appreciated... thanks

Camera is well used on 2nd shutter @400k+ Wonder if this is shutter on way out or aperture blades or something else..?

 

[beforeEos Camaras]

might be a loose lens hood

 

[martinslade]

might be a loose lens hood

Thanks for your reply... checked hood and all looks ok. Just come back from a shoot and most are ok but still just the corner on some... very odd intermittent error...

 

[Mt Spokane Photography]

Try taking photos with different shutter speeds. Shutter issues are normally worse at high shutter speeds which can narrow it down.