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Need "wide angle" filter?



 
 
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  #1  
Old September 6th 04, 06:02 PM
Mike - EMAIL IGNORED
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Default Need "wide angle" filter?

I need a 72 Tiffen 812 filter for my:
Nikon 24-85 f/2.8-4.0D IF Autofocus lens.
I see that a "wide angle" version of the
filter is available at considerably higher
price. Is this required? What are its
advantages?

Thanks in advance for your help.
Mike.
  #2  
Old September 6th 04, 08:26 PM
Martin Francis
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Default

"Mike - EMAIL IGNORED" wrote in message
...
I need a 72 Tiffen 812 filter for my:
Nikon 24-85 f/2.8-4.0D IF Autofocus lens.
I see that a "wide angle" version of the
filter is available at considerably higher
price. Is this required? What are its
advantages?


Can't answer the "required" part, but i'd guess with a 24mm wide end it
would help. The WA filter simply has a very thin profile, meaning the
ordinarily thick metal ring is rather thinner. There is less chance of the
metal ring intruding on the corners of your frame, commonly referred to as
vignetting.

--
Martin Francis http://www.sixbysix.co.uk
"Go not to Usenet for counsel, for it will say both no, and yes, and
no, and yes...."


  #3  
Old September 6th 04, 08:26 PM
Martin Francis
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Posts: n/a
Default

"Mike - EMAIL IGNORED" wrote in message
...
I need a 72 Tiffen 812 filter for my:
Nikon 24-85 f/2.8-4.0D IF Autofocus lens.
I see that a "wide angle" version of the
filter is available at considerably higher
price. Is this required? What are its
advantages?


Can't answer the "required" part, but i'd guess with a 24mm wide end it
would help. The WA filter simply has a very thin profile, meaning the
ordinarily thick metal ring is rather thinner. There is less chance of the
metal ring intruding on the corners of your frame, commonly referred to as
vignetting.

--
Martin Francis http://www.sixbysix.co.uk
"Go not to Usenet for counsel, for it will say both no, and yes, and
no, and yes...."


  #4  
Old September 6th 04, 08:57 PM
Alan Browne
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Posts: n/a
Default

Mike - EMAIL IGNORED wrote:

I need a 72 Tiffen 812 filter for my:
Nikon 24-85 f/2.8-4.0D IF Autofocus lens.
I see that a "wide angle" version of the
filter is available at considerably higher
price. Is this required? What are its
advantages?


That is a "thin" version that increases the length of the front
end as little as possible to prevent vignetting at wide angle
and/or widest aperture.

These thin versions usually don't have the female thread on the
front and hence no other filters can be stacked on.

I would think that for your lens, as long as you use one filter
only (eg: remove any "protective" filter before adding the 812)
that the vignetting might nor occur at all with only that filter
in place.

If you've seen vignetting in your wide angle shots, then it might
be a good idea to get the thin version and use it w/o a skylight
or UV filter in place.

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 6th 04, 08:57 PM
Alan Browne
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Posts: n/a
Default

Mike - EMAIL IGNORED wrote:

I need a 72 Tiffen 812 filter for my:
Nikon 24-85 f/2.8-4.0D IF Autofocus lens.
I see that a "wide angle" version of the
filter is available at considerably higher
price. Is this required? What are its
advantages?


That is a "thin" version that increases the length of the front
end as little as possible to prevent vignetting at wide angle
and/or widest aperture.

These thin versions usually don't have the female thread on the
front and hence no other filters can be stacked on.

I would think that for your lens, as long as you use one filter
only (eg: remove any "protective" filter before adding the 812)
that the vignetting might nor occur at all with only that filter
in place.

If you've seen vignetting in your wide angle shots, then it might
be a good idea to get the thin version and use it w/o a skylight
or UV filter in place.

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 6th 04, 08:57 PM
Alan Browne
external usenet poster
 
Posts: n/a
Default

Mike - EMAIL IGNORED wrote:

I need a 72 Tiffen 812 filter for my:
Nikon 24-85 f/2.8-4.0D IF Autofocus lens.
I see that a "wide angle" version of the
filter is available at considerably higher
price. Is this required? What are its
advantages?


That is a "thin" version that increases the length of the front
end as little as possible to prevent vignetting at wide angle
and/or widest aperture.

These thin versions usually don't have the female thread on the
front and hence no other filters can be stacked on.

I would think that for your lens, as long as you use one filter
only (eg: remove any "protective" filter before adding the 812)
that the vignetting might nor occur at all with only that filter
in place.

If you've seen vignetting in your wide angle shots, then it might
be a good idea to get the thin version and use it w/o a skylight
or UV filter in place.

Cheers,
Alan

--
-- rec.photo.equipment.35mm user resource:
-- http://www.aliasimages.com/rpe35mmur.htm
-- e-meil: there's no such thing as a FreeLunch.--
  #7  
Old September 7th 04, 02:51 AM
DGENR8
external usenet poster
 
Posts: n/a
Default

Mike - EMAIL IGNORED wrote:

I need a 72 Tiffen 812 filter for my:
Nikon 24-85 f/2.8-4.0D IF Autofocus lens.
I see that a "wide angle" version of the
filter is available at considerably higher
price. Is this required? What are its
advantages?

Thanks in advance for your help.
Mike.


Go for a 72mm-77mm step-up ring and the 77mm version of the 812.
Probably cheaper overall, and will allow further stacking.

Cheers,

  #8  
Old September 7th 04, 02:51 AM
DGENR8
external usenet poster
 
Posts: n/a
Default

Mike - EMAIL IGNORED wrote:

I need a 72 Tiffen 812 filter for my:
Nikon 24-85 f/2.8-4.0D IF Autofocus lens.
I see that a "wide angle" version of the
filter is available at considerably higher
price. Is this required? What are its
advantages?

Thanks in advance for your help.
Mike.


Go for a 72mm-77mm step-up ring and the 77mm version of the 812.
Probably cheaper overall, and will allow further stacking.

Cheers,

 




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