Picked up Sigma 17-70mm

[iceman (Mike)]

A lot of guys make the mistake that you need to stop a lens down all the way to maximise your depth of field. Whilst I'm over simplifying a bit, and can explain a bit better in person - At 17mm you have so much DoF that you'll find something like f/8 or f/11 would be plenty.

Thanks for the tips!

- diffraction

Sometimes I like this effect, so stop it all the way down on purpose, where there's lights or similar in scene.

- A lens is typically at it's sharpest 2 stops from wide open and at it's worst wide open or fully stopped down.

Thanks again, i'll take this on board and definitely try differently next time.