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12/18/2004 02:37:50 AM · #1 |
My camera has an aperture of f/2.8-f/8 and whilst I'm aware of what apature is and what effect it has, I keep seeing differin ideas on which side of the spectrum does what.
In the same magazine (pp) I've seen some articles saying 'an apateur of f/2.8 was used to throw the background out of focus' and also 'f/8 is best to keep everything pin sharp', which supports each other, but I've always shot the other way round, with 2.8 giving the sharpest all round shots and f/8giving the shorter dof. I've also seen conflicting ideas in the same magazin. Is it to do with distance of subject?
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12/18/2004 02:53:39 AM · #2 |
The larger aperture (smaller number) will give the smaller DOF for any given distance to the target and focal length of lens. When the distance to the subject or the focal length is varied, so is the DOF.
This tutorial, "Depth of Field for Digital Cameras - A Brief Primer", and article, "Understanding Depth Of Field", may help.
David
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12/18/2004 03:18:21 AM · #3 |
Digital cameras such as yours will have a large DOF no matter what.
When using max zoom vs wide angle you will notice a difference in how car out of focus you can make the background. Macro will work very well for that if taking a pic of a flower or the item if you are less than 3 feet from it or so.
To get good DOF control you need a dSLR, preferrably with a big sensor.
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12/18/2004 11:34:49 AM · #4 |
Originally posted by Prof_Fate:
To get good DOF control you need a dSLR, preferrably with a big sensor. |
To get good DoF control you need a lens, be it an interchangable on the front of a DSLR or the lens sytem of a prosumer, that has a large range of available apertures. And you need the space to be able to place your subject near of far from the background. |
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12/18/2004 11:44:17 AM · #5 |
| Even with a prosumer, because of their huge crop factors, for instance, the DSC-F828 has an actuallens of something like 7 to 50 mm. Still pretty wide fo small DoF unless you are close-focusing. |
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