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Stacking filters



 
 
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  #1  
Old September 4th 04, 09:31 PM
Rivergoat
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Default Stacking filters

I'm thinking I was right on the border of exceeding capabilities on a
recent high altitude shoot. Using a Nikon N90s with circular polarizer
and an 81B warming filter (sorry, I just can't afford a warming
polarizer just now), and the lens hood (on a 24-120 Nikon), some shots
seemed to exhibit a slight vignetting. I am assuming that's due to the
stacking? Is there a rule of thumb, should I be best off not using the
hood when I need to stack? All in all, though I still got some very
nice shots on the trip....
  #2  
Old September 4th 04, 09:43 PM
Joseph Meehan
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Default

Rivergoat wrote:
I'm thinking I was right on the border of exceeding capabilities on a
recent high altitude shoot. Using a Nikon N90s with circular polarizer
and an 81B warming filter (sorry, I just can't afford a warming
polarizer just now), and the lens hood (on a 24-120 Nikon), some shots
seemed to exhibit a slight vignetting. I am assuming that's due to the
stacking? Is there a rule of thumb, should I be best off not using the
hood when I need to stack? All in all, though I still got some very
nice shots on the trip....


Best bet is to try out the combinations you have on your equipment at
the zoom you will be using.

There is a lot of difference in filters, some are thinner than others.
Some come in both normal and thin versions. Some lens hoods fit the lens
and are not affected by the filter(s) and some mount on the filter so they
are affected by the filter(s)

It would appear that you should not use the hood with the stack at a
wide angle setting. Then again under some conditions, you might experience
serious flare and you might be better off eliminating one or more filters
and stick with the lens hood.

Sorry there is no single rule.

--
Joseph E. Meehan

26 + 6 = 1 It's Irish Math



  #3  
Old September 4th 04, 09:43 PM
Joseph Meehan
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Default

Rivergoat wrote:
I'm thinking I was right on the border of exceeding capabilities on a
recent high altitude shoot. Using a Nikon N90s with circular polarizer
and an 81B warming filter (sorry, I just can't afford a warming
polarizer just now), and the lens hood (on a 24-120 Nikon), some shots
seemed to exhibit a slight vignetting. I am assuming that's due to the
stacking? Is there a rule of thumb, should I be best off not using the
hood when I need to stack? All in all, though I still got some very
nice shots on the trip....


Best bet is to try out the combinations you have on your equipment at
the zoom you will be using.

There is a lot of difference in filters, some are thinner than others.
Some come in both normal and thin versions. Some lens hoods fit the lens
and are not affected by the filter(s) and some mount on the filter so they
are affected by the filter(s)

It would appear that you should not use the hood with the stack at a
wide angle setting. Then again under some conditions, you might experience
serious flare and you might be better off eliminating one or more filters
and stick with the lens hood.

Sorry there is no single rule.

--
Joseph E. Meehan

26 + 6 = 1 It's Irish Math



  #4  
Old September 4th 04, 10:13 PM
Alan Browne
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Default

Rivergoat wrote:

I'm thinking I was right on the border of exceeding capabilities on a
recent high altitude shoot. Using a Nikon N90s with circular polarizer
and an 81B warming filter (sorry, I just can't afford a warming
polarizer just now), and the lens hood (on a 24-120 Nikon), some shots
seemed to exhibit a slight vignetting. I am assuming that's due to the
stacking? Is there a rule of thumb, should I be best off not using the
hood when I need to stack? All in all, though I still got some very
nice shots on the trip....


So ... post the phots!

Stacking is a good way to get vignetting at the wide end at large
apertures.
In particular if you also had a UV/Skylight filter, plus 81B plus
the pol it becomes pretty much guaranteed.

The hood may make it worse if it is pushed out... with my circ
pol, a threaded hood cannot be used.

Rule of thumb: if you stack, think about aperture and FL
contributions to vignetting. Wide aperture and wide FOV will
vignette many lenses _without_ filters ... adding them just
increases the liklihood.

Cheers,
Alan


--
-- rec.photo.equipment.35mm user resource:
-- http://www.aliasimages.com/rpe35mmur.htm
-- e-meil: there's no such thing as a FreeLunch.--
  #5  
Old September 4th 04, 10:13 PM
Alan Browne
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Default

Rivergoat wrote:

I'm thinking I was right on the border of exceeding capabilities on a
recent high altitude shoot. Using a Nikon N90s with circular polarizer
and an 81B warming filter (sorry, I just can't afford a warming
polarizer just now), and the lens hood (on a 24-120 Nikon), some shots
seemed to exhibit a slight vignetting. I am assuming that's due to the
stacking? Is there a rule of thumb, should I be best off not using the
hood when I need to stack? All in all, though I still got some very
nice shots on the trip....


So ... post the phots!

Stacking is a good way to get vignetting at the wide end at large
apertures.
In particular if you also had a UV/Skylight filter, plus 81B plus
the pol it becomes pretty much guaranteed.

The hood may make it worse if it is pushed out... with my circ
pol, a threaded hood cannot be used.

Rule of thumb: if you stack, think about aperture and FL
contributions to vignetting. Wide aperture and wide FOV will
vignette many lenses _without_ filters ... adding them just
increases the liklihood.

Cheers,
Alan


--
-- rec.photo.equipment.35mm user resource:
-- http://www.aliasimages.com/rpe35mmur.htm
-- e-meil: there's no such thing as a FreeLunch.--
  #6  
Old September 4th 04, 11:57 PM
Rivergoat
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Default

On Sat, 04 Sep 2004 17:13:34 -0400, Alan Browne
wrote:

So ... post the phots!


Thanks for the tips, and uh...I feel retarded here...where/how's the
best to post pix? Use a Yahoo location for them, or some other
hosting? I haven't posted a lot of stuff on line all these years, ho
hum....

I was at Bodie State Park, CA in June. As I said, I think I got some
very nice shots, especially considering as "everyone comes to Rick's"
so "everyone photographs Bodie!" *
  #7  
Old September 4th 04, 11:57 PM
Rivergoat
external usenet poster
 
Posts: n/a
Default

On Sat, 04 Sep 2004 17:13:34 -0400, Alan Browne
wrote:

So ... post the phots!


Thanks for the tips, and uh...I feel retarded here...where/how's the
best to post pix? Use a Yahoo location for them, or some other
hosting? I haven't posted a lot of stuff on line all these years, ho
hum....

I was at Bodie State Park, CA in June. As I said, I think I got some
very nice shots, especially considering as "everyone comes to Rick's"
so "everyone photographs Bodie!" *
  #8  
Old September 5th 04, 12:46 AM
Martin Djernæs
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Default

Hi,
Rivergoat wrote:

Thanks for the tips, and uh...I feel retarded here...where/how's the
best to post pix? Use a Yahoo location for them, or some other
hosting? I haven't posted a lot of stuff on line all these years, ho
hum....


Yahoo or any other place where you can send a web link to the page is
*the best* way to post stuff.

Martin
  #9  
Old September 7th 04, 04:15 AM
Kevin Neilson
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Default

"Rivergoat" wrote in message
...
I'm thinking I was right on the border of exceeding capabilities on a
recent high altitude shoot. Using a Nikon N90s with circular polarizer
and an 81B warming filter (sorry, I just can't afford a warming
polarizer just now), and the lens hood (on a 24-120 Nikon), some shots
seemed to exhibit a slight vignetting. I am assuming that's due to the
stacking? Is there a rule of thumb, should I be best off not using the
hood when I need to stack? All in all, though I still got some very
nice shots on the trip....


I believe Nikon lenses are designed such that they may take one filter
without vignetting. Longer lenses don't vignette as much, but my 28mm
always vignettes with two filters stacked.
-Kevin


  #10  
Old September 7th 04, 04:15 AM
Kevin Neilson
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Posts: n/a
Default

"Rivergoat" wrote in message
...
I'm thinking I was right on the border of exceeding capabilities on a
recent high altitude shoot. Using a Nikon N90s with circular polarizer
and an 81B warming filter (sorry, I just can't afford a warming
polarizer just now), and the lens hood (on a 24-120 Nikon), some shots
seemed to exhibit a slight vignetting. I am assuming that's due to the
stacking? Is there a rule of thumb, should I be best off not using the
hood when I need to stack? All in all, though I still got some very
nice shots on the trip....


I believe Nikon lenses are designed such that they may take one filter
without vignetting. Longer lenses don't vignette as much, but my 28mm
always vignettes with two filters stacked.
-Kevin


 




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