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Thread started 01 May 2012 (Tuesday) 05:48
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Anyone using the Singh-Ray Vari-ND filter?

 
pxchoi
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May 01, 2012 05:48 |  #1

I don't like to carry a kit of filters and if I could just carry one, it would be most ideal.

Does anyone here use the Singh-Ray Vari-ND filter? - Thoughts?

Thanks!


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Pi_314
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May 01, 2012 09:44 |  #2

pxchoi wrote in post #14358816 (external link)
I don't like to carry a kit of filters and if I could just carry one, it would be most ideal.

Does anyone here use the Singh-Ray Vari-ND filter? - Thoughts?

Thanks!

As far as loss in IQ, there is no issue in any way shape or form. You wil get a variable in the color cast however, from a slight warming in the 2 to 3 three stop range, being fairly neutral at 3 to 5 stops (ballpark), and gradually getting bluer towards the full 8 stop range. You will get cross hatching before 8 stops when using a lens less than say a 35 mm. Working your way up the mm ladder, the cross hatching will eventually disappear at the 8 stop range.
If you are expecting to shoot mainly with a wide lens, you might pause for concern. Other than that, it's an excellent product worthy of consideration.




  
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ocabj
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May 01, 2012 12:13 |  #3

The Singh-Ray Vari-ND 77 standard ring mount will vignette on a 24-70 under 35mm on a full frame. http://www.ocabj.net/?​p=1785 (external link)

I don't own or have access to a slim ring version, so I can't say whether that one will.


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timeasterday
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May 01, 2012 19:02 |  #4

I have a slim-mount Vari-N-Duo arriving tomorrow and I'll do some testing with full frame and crop Canons.


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kwando
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May 01, 2012 21:25 |  #5

Heard they are the best!


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pxchoi
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May 02, 2012 04:55 |  #6

timeasterday wrote in post #14362970 (external link)
I have a slim-mount Vari-N-Duo arriving tomorrow and I'll do some testing with full frame and crop Canons.

Definitely keep me posted.

Are there any samples images of the cross hatching? I do plan on using this lens at wide angle which is making me hesitate.


Patrick Choi
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timeasterday
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May 02, 2012 14:29 as a reply to  @ pxchoi's post |  #7

This was a quick test I just did with a Canon 5DMKII and a 17-40mm L lens set to 17mm.

Images are arranged as follows:

      Filter set to Min            Filter at 1/4
Filter at 1/2 Filter at 3/4
Filter one tick above 3/4 Filter two ticks above 3/4
Filter 3 ticks above 3/4 Filter at Max

IMAGE: http://farm8.staticflickr.com/7255/7136480049_5664832390_b.jpg

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timeasterday
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May 02, 2012 14:32 as a reply to  @ timeasterday's post |  #8

This was at 24mm (minimum I needed to go to avoid any vignetting).

Images are arranged as follows:

      Filter set to Min            Filter at 1/4
Filter at 1/2 Filter at 3/4
Filter one tick above 3/4 Filter two ticks above 3/4
Filter 3 ticks above 3/4 Filter at Max

IMAGE: http://farm8.staticflickr.com/7257/6990394972_eac5a9543d_b.jpg

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timeasterday
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May 02, 2012 14:33 as a reply to  @ timeasterday's post |  #9

This was at 40mm.

Images are arranged as follows:

      Filter set to Min            Filter at 1/4
Filter at 1/2 Filter at 3/4
Filter one tick above 3/4 Filter two ticks above 3/4
Filter 3 ticks above 3/4 Filter at Max

IMAGE: http://farm8.staticflickr.com/7194/6990395258_c8986a1e7b_b.jpg

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timeasterday
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May 02, 2012 14:37 |  #10

I tried the same test with my wife's 7D and 10-22mm lens. The results were pretty close although going almost totally black at max. Not sure what was going on there - the camera did not seem to be metering properly, or at least not the same as my 5DMKII. I tried inside and didn't get the really dark exposure at max, so maybe the bright sunlight was doing something to the metering. That camera & lens combo did not vignette from 14mm on up.


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Voaky999
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May 03, 2012 22:07 |  #11

I have an 82mm Singh Ray. Using it on a 17-40 with BW 77-82 stepup ring it can open to 20mm before it starts vignetting


Don
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hollis_f
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May 04, 2012 05:53 |  #12

timeasterday wrote in post #14367825 (external link)
I tried the same test with my wife's 7D and 10-22mm lens. The results were pretty close although going almost totally black at max. Not sure what was going on there - the camera did not seem to be metering properly, or at least not the same as my 5DMKII. I tried inside and didn't get the really dark exposure at max, so maybe the bright sunlight was doing something to the metering.

Ordinary ND filters let in a lot of IR, which the metering sensor can see. That'll ruin auto-exposure in bright sunlight. I guess the same happens with the VND. With an ordinary ND you can calculate what exposure is needed. With a VND you can't as you don't know how many stops you've dialled in. Yet another reason why I don't use one.


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timeasterday
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May 04, 2012 06:04 |  #13

hollis_f wrote in post #14377678 (external link)
Ordinary ND filters let in a lot of IR, which the metering sensor can see. That'll ruin auto-exposure in bright sunlight. I guess the same happens with the VND. With an ordinary ND you can calculate what exposure is needed. With a VND you can't as you don't know how many stops you've dialled in. Yet another reason why I don't use one.

That's a good point and explains why it worked better indoors. Funny that my 5DMKII didn't seem to have much problem with it. My wife wanted a variable ND so we'll see how she likes it this weekend at some waterfalls, which will be the typical use of this filter. I prefer my 3-stop and 10-stop B+W ND filters and between one of those and my CPL, that's enough for me. Sometimes I really want 10 stops and unfortunately the Vari-N-Duo is not usable at that setting.


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ocabj
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May 04, 2012 07:41 |  #14

hollis_f wrote in post #14377678 (external link)
With an ordinary ND you can calculate what exposure is needed. With a VND you can't as you don't know how many stops you've dialled in. Yet another reason why I don't use one.

I did experiments to 'measure' the amount of light loss for the index marks on my own Singh-Ray Vari-ND: http://www.ocabj.net/?​p=2066 (external link)


Jonathan Ocab - https://www.ocabj.net (external link) - http://jocabphoto.com (external link)

  
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timeasterday
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May 04, 2012 08:11 |  #15

ocabj wrote in post #14377947 (external link)
I did experiments to 'measure' the amount of light loss for the index marks on my own Singh-Ray Vari-ND: http://www.ocabj.net/?​p=2066 (external link)

Yep, that was my experience as well. I was taking photos at every tick mark and didn't notice much change at first and then it really started working. But it's a shame there's so little room from a noticeable effect to an unusable result.


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Anyone using the Singh-Ray Vari-ND filter?
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