I'm a newbie in photography and need to ask some questions.
At 90mm (focal length) 1/320 f8 ISO-800, I shoot a person (moving towards me) under shade. (His back is facing the brighter area). However, I fail to get a sharp image.
When i first saw the pic, i tot it was shot at low shutter speed, but 1/320 for 90mm focal length is fast enough, right? Shooting at F8 using a canon 28-105mm USM should be good enough right? And will ISO affect the sharpness (maybe due to noise reduction, losing of details) ? Or my hand is shaking? (Or combine jerky hands + moving subject, 1/320 for 90mm may not be enough?)
Please advise, me kinda disturbed Thanks