Camera Labs

I know what appature does, but im not sure which way round the scale goes. What I mean is does a higher F number mean the whole picture is more crisp or does it mean it will blurr the background out?

Also what is a good high and low number to use as I dont want to make my pictures two blury as the scale seems quite wide.

Low F-value (for instance F/2.8 ) = blurry background.
For what is good and bad, i would recommend to figure that out for yourself by trying a lot of different stuff

Hi tobywuk,

If you have a little time to devote to some study there's a good "Understanding Depth of Field in Photography" tutorial at the CambridgeInColour site.

Bob.

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OM-D E-M5 + ED 12-50mm, H-PS14042E, H-F007014E, L-RS014150E, M.ZUIKO DIGITAL 45mm 1:1.8.
Gitzo GT1541T, Arca-Swiss Z1 DP ball-head.
Astrophotography: TEC 140 'scope, FLI ML16803 camera, ASA DDM60 Pro mount.

It's easy: the f-number is directly proportional to the depth of field!
So higher numbers mean greater dof...

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Thomas (beware: Nikon-fanboy and moderator!) My Lens Reviews, My Pictures, My Photography Blog
D800+assorted lenses

Hi Toby, we'll have a tutorial about this very soon!