Oh boy I don't know if I should engage in a filter thread... <smiling>
Probably you have received several good answers by now, but here is my short
list
- slows down lens for when you get caught with fast film and bright light
(camera would overexpose even at highest shutter speed and smallest f-stop
without it)
- for lenses with no f-stop, provides a way to compensate for exposure (this
is rare but there are lenses like this)
- allows use of f-stop that gives desired depth-of-field but not desired
exposure (where shutter speed is also pre-determined, as when using flash)
- allows use of larger f-stop opening where use of a small f-stop will cause
a loss of sharpness.
There are graduated neutral density filters that darken one part of the
scene - these are useful when, for example, you need to record detail in the
sky as well as on the ground and in foreground objects.
ppro
-----Original Message-----
From: Paul Jones [mailto:[EMAIL PROTECTED]]
Sent: Monday, March 12, 2001 8:26 PM
To: [EMAIL PROTECTED]
Subject: Neutral Density Filter
Hi,
I am wondering what a neutral density filter is for? I have a couple that
just look like there the equivelant of sunglasses for the lense.
I was also curious about the neutral density gtaduated filters, do these
just fade from a heavier tint to a lighter tint?
Any comments on these filters or where you find them would be helpful.
Cya
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