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43mm vario ND filter


dbane883

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I'll tell if you promise not to take any pictures of "silky" waterfalls and "silky" rivers....

 

....You don't promise, because everyone does that?  Oh, OK then..

 

 

 

 

an immediate search revealed them at Amazon...

 

http://www.amazon.com/Variable-Filter-Adjustable-Neutral-Density/dp/B00C1DJYD8

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I'll tell if you promise not to take any pictures of "silky" waterfalls and "silky" rivers....

 

....You don't promise, because everyone does that? Oh, OK then..

 

 

 

 

an immediate search revealed them at Amazon...

 

http://www.amazon.com/Variable-Filter-Adjustable-Neutral-Density/dp/B00C1DJYD8

How dare you use the Internet to search for a product :)

 

Booooooookeh???

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I'll tell if you promise not to take any pictures of "silky" waterfalls and "silky" rivers....

 

....You don't promise, because everyone does that?  Oh, OK then..

 

 

 

 

an immediate search revealed them at Amazon...

 

http://www.amazon.com/Variable-Filter-Adjustable-Neutral-Density/dp/B00C1DJYD8

US$12.15.

"Optical glass from Japan". Precision assembly in ????. Coatings? No mention. Spit works, I guess.

 

The perfect add-on to a $4,000 lens.

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Is this phenomenon with all variable ND filters irrespective of the maker?

No, it is not. I have a variable ND filter and have so far not been able to provoke that efffect, unless I set it beyond the maximum value indicated on its frame.

 

It's a "Neutral Density Filter NDX400 40.5mm - http://www.pixelhk.com"

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No, it is not. I have a variable ND filter and have so far not been able to provoke that efffect, unless I set it beyond the maximum value indicated on its frame.

 

It's a "Neutral Density Filter NDX400 40.5mm - http://www.pixelhk.com"

I have a very simple test. The aforementioned filter on a Jupiter-3 lens, all shots at 1:1.5, exposure set to automatic. The first shot is exposed for 1/500 sec, the last one for 4 sec.

 

1/500

Welcome, dear visitor! As registered member you'd see an image here…

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1/250

1/125

1/60

1/30

1/15

 

(continued)

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1/8

Welcome, dear visitor! As registered member you'd see an image here…

Simply register for free here – We are always happy to welcome new members!

1/4

1/2

1 sec

2 sec

4 sec

 

I believe that the filter was set at the "max" marking for the frame taken with 1 sec. You can see that at 4 sec it passes much IR light.

 

There are some irregularities in image brightness but not as drastic ones as other members have shown.

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No one has spoken of B+W or Heliopan; are all polarizers created the same, resulting in the identical artifact?

 

This is a real bummer. I have a 2-stop Heliopan I use with my Summicrons for B&W and wanted to get the variable for convenience.

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No one has spoken of B+W or Heliopan; are all polarizers created the same, resulting in the identical artifact?

Misunderstanding. The variable ND filters use two polarizing filters in opposition to each other to create an ND filter and sometimes cause the artifacts already noted.

 

Straightforward (linear) polarizing filters are one layer. Circular polarizers add a 1/4 wave filter. Circular is the way to go if you use autofocus. Neither will cause the artifacts noted so far. Neither will straight ND filters.

 

So, circular and nd is good. Enjoy!

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