Jacob wrote:
> men dybdeskarpheden vil altid være større ved brug af vidvinkel.
Dette er ikke rigtigt. Mange tror på det, jeg selv indtil jeg læste:
http://luminous-landscape.com/tutorials/understanding-series/dof.shtml
Der hører en side 2 til testen, med mange billede-eksempler. Den side er
åbenbart nede nu. (Håber den kommer op igen) Her viser han at
dybdeskarpheden er ENS ved mange forskellige "focal length"
Jeg citerer lige en lille bid tekst fra siden:
At the beginning of this tutorial I wrote, "Most people also believe that
wide angle lenses have more depth of field than telephoto lenses (false)."
Why is this such a common misconception?
It seems logical. Wide angle lenses appear to have more depth of field than
long lenses, don't they? Yes, they appear to but only when you don't take
subject size into account.
Imagine a person in a photograph holding a flower in front of them, and with
a mountain range in the background. Now set up the shot so that the person's
head fills about half the frame. Take a series of shots with every lens in
your arsenal, from a 14mm ultra wide to a 600mm ultra telephoto. As long as
the head is the same size in each frame the Depth of Field will be the same.
The flower and the mountains will be equally in focus or out of focus as you
change lenses.
> Blænde
> 5.6 ved f.eks. 14mm vil have dybdeskarphed på mange, mange meter,
> hvor blænde 5.6 på en 300mm kun vil have dybdeskarphed på en meter
> eller noget i den dur.
Dette er så også forkert.
MVH
Frederik