Re: Sky, UV, Haze filters?

2002-09-24 Thread Paul Stenquist



Pat White wrote:
 
 UV and Haze filters are similar, if not the same, and are neutral in color.
 They're meant to reduce UV (naturally), which improves the look of distant
 landscapes, among other things.  You can leave them on all the time.
 

I use a UV filter only when needed to reduce distant haze. In other
situations, it just adds another piece of glass reducing the efficiency
of the lens and contributing to flare. Most filters are not multi
coated, and even those that are generally are not up to the standards of
pentax SMC lenses. The best filter for most situations is no filter.
Paul




Re: Sky, UV, Haze filters?

2002-09-24 Thread Keith Whaley



Paul Stenquist wrote:
 
 Pat White wrote:
 
  UV and Haze filters are similar, if not the same, and are neutral in color.
  They're meant to reduce UV (naturally), which improves the look of distant
  landscapes, among other things.  You can leave them on all the time.
 
 
 I use a UV filter only when needed to reduce distant haze. In other
 situations, it just adds another piece of glass reducing the efficiency
 of the lens and contributing to flare. Most filters are not multi
 coated, and even those that are generally are not up to the standards of
 pentax SMC lenses. The best filter for most situations is no filter.
 Paul

I have used Skylight/UV filters all my life, and never thought about
the reduction in quality.
I photograph near the ocean frequently, so I want to keep the
inevitable fog off my lens.

I know, intellectually, I understand they can, but I suppose I just
never thought of it.
I have been testing a new camera and am not yet satified with the
prints I'm getting. 
I've been [silently] blaming the processor. Maybe I should take
another roll or two with that filter OFF!

Good heads up.  Thanks.

keith whaley




Re: Sky, UV, Haze filters?

2002-09-24 Thread Paul Stenquist

Although I used a polarizer quite frequently at one time, I now feel
that  it causes oversaturation and blocky looking colors in many cases.
I'll use one for landscapes when the sky is pale or when haze and/or
reflections are a problem. But that's about it. 
   I do use yellow and red filters for B/W landscape photography, but I
don't do much of that these days. I'm more into portraiture and people
pics at the moment. (That of course is subject to change at the passing
of a fancy:-)
Paul

Ann Sanfedele wrote:
 
 Paul Stenquist wrote:
 
  Pat White wrote:
  
   UV and Haze filters are similar, if not the same, and are neutral in color.
   They're meant to reduce UV (naturally), which improves the look of distant
   landscapes, among other things.  You can leave them on all the time.
 
  I use a UV filter only when needed to reduce distant haze. In other
  situations, it just adds another piece of glass reducing the efficiency
  of the lens and contributing to flare. Most filters are not multi
  coated, and even those that are generally are not up to the standards of
  pentax SMC lenses. The best filter for most situations is no filter.
  Paul
 
 While I have to say that I agree with the clear lens cap opinion re UV's  - I'm
 not
 sure I go along with the best filter in most situations is no filter  - depends
 
 a lot on what you shoot.  For snaps of friends and other people pictures
 in black and white, I'd pretty much agree.  But yellow, orange and red filters
 for
 black and white shooting, more often than not, give more in quality than they
 remove.  And a polarizer is seldom off my 50 mm lens when shooting in color.
 Necessary
 to bring the scene to the print that you have seen with your eyes very often.  It
 
 will provide reduction of distant haze and do so much more.
 
 early morning 2 cents from
 annsan




Re: Sky, UV, Haze filters?

2002-09-23 Thread William Robb


- Original Message -
From: Dan Scott
Subject: Sky, UV, Haze filters?


 O Sages, speak to me...

 What the heck is the difference between Sky, UV,  and Haze
filters?

 Are they all the same thing? It sounds like they are to me,
but
 manufacturers frequently offer two or all three side by side,
so I can't
 be right.

 How are they different, and cirumstances would cause me to
prefer this
 one or that one? Does a polarizing filter eliminate the use of
the three?

UV filter is essentially a lens cap. They don't do anything that
the glass in the lens already does.
Sky and Haze are generally the same thing, and essentially
subtract about 50ºK from the colour of the light being
transmitted. The idea is that daylight is often too blue, so
warming things up a bit is a good thing.
You can get stronger filters, such as UVB and UVC that give a
stronger effect.
I tend to distrust the little buggers, as more glass is bad
glass to my way of thinking, but I do have UV-C filters for my
longer telephoto lenses, on the off chance that they actually do
something useful.
Polarizers are a different animal altogether. However, stacking
filters is aways a gamble.

William Robb

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Re: Sky, UV, Haze filters?

2002-09-23 Thread James Adams


What about the 81A and 82A filters? I and can't remember when. or what I
last used them for. I have a feeling it had something to do with
Daylight/Tungsten film or like that!
Is there a Filter FAQ on the Web?
James
- Original Message -
From: Pat White [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Monday, September 23, 2002 7:31 PM
Subject: Sky, UV, Haze filters?


 UV and Haze filters are similar, if not the same, and are neutral in
color.
 They're meant to reduce UV (naturally), which improves the look of distant
 landscapes, among other things.  You can leave them on all the time.

 Skylight filters are pale pink, or salmon-colored, and are warming
filters,
 meant for use in open shade, where most of the light is coming from the
sky,
 which can give a blue cast to your picture.  If you use them indoors, or
in
 bright sunshine, white areas can look pinkish.

 To see the color of a skylight filter, put it on a white piece of paper,
and
 it should be obvious.

 Pat White