I learned something about my K-5 II camera today . . .

Mannesty · 2019-07-15T16:26:03+0100

. . . and it occured to me that some others might not know what I discovered. I was watching a tutorial about achieving ultimate image sharpness today. It talked about using a sturdy support, techniques for reducing camera shake when taking hand held shots, and also post processing techniques. During this tutorial, the tutor, Hudson Henry, mentioned that when he was out and about shooting stuff that he mostly used Aperture priority and Auto ISO. He went on to explain that by doing so, the camera (a Nikon D810) automatically tracked the focal length in use and selected a shutter speed high enough to help towards reducing camera shake, nominally the reciprocal of the focal length of the lens multiplied by any crop factor. So I thought I'd try out my camera to see if the same were true and Indeed it was. That was something of a revalation to me because I thought I knew my camera inside out and backwards. No matter what lens I put on the body (I tried DA* 16-50mm and DA* 60-250mm) using Av and Auto ISO, the camera always maintained a shutter speed at least as fast as the formula ((1 / lens focal length) * crop factor) in normal daylight lighting conditions. Who knew? I certainly didn't.

Pentax Digital Camera DiscussionPentax Digital Camer...

Add Comment

PaulEvans PaulEvans

210 posts
16 years
Manchester UK

Posted 19/07/2019 - 08:06 Link

That's really useful, thanks - going to be using this in mine....

Paul

K3ii, DA16-85, DA35mm Limited, FA77mm Limited, 55mm f1.8 K, 135mm f3.5 M, DA300, DA 1.4 HD TC,
DA16-45, Sigma 15mm f2.8. Cosina 100mm f3.5 macro

PRYorkshire PRYorkshire

308 posts
7 years
Doncaster

Posted 19/07/2019 - 14:41 Link

Many thanks. Never realised this but checked it out on my K70 and found the following:

16-85 lens
16mm - 1/50s
24mm - 1/60s
35mm - 1/80s
50mm - 1/100s
85mm - 1/160s

Paul

K1000, Espio 140, ist, istD, K70, K3iii and numerous lenses, just don't tell my wife.