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Author Topic: Shooting with ND 10-stop???  (Read 3544 times)

duraace

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Shooting with ND 10-stop???
« on: August 24, 2009, 02:06:24 pm »

I just got an ND 10-stop filter for my Nikon D700 and 105mm VR lens.  I'm wanting long exposures, hence the reason for 10-stop.  I'm getting completely underexposed shots in aperture priority, so I switched to manual which resulted in a good shot at 15 secs at  f7.1.  Why is the camera choosing 1/8 in aperture priority at f7.1, when 15 secs. is required?  Does a 10 stop ND mean always shooting manual?   Does this mean there's not enough light getting through the lens, for the camera to be able to determine the correct exposure?
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Jeremy Payne

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Shooting with ND 10-stop???
« Reply #1 on: August 24, 2009, 02:20:57 pm »

Quote from: duraace
I just got an ND 10-stop filter for my Nikon D700 and 105mm VR lens.  I'm wanting long exposures, hence the reason for 10-stop.  I'm getting completely underexposed shots in aperture priority, so I switched to manual which resulted in a good shot at 15 secs at  f7.1.  Why is the camera choosing 1/8 in aperture priority at f7.1, when 15 secs. is required?  Does a 10 stop ND mean always shooting manual?   Does this mean there's not enough light getting through the lens, for the camera to be able to determine the correct exposure?
One thing I can think of (maybe) is that there is light getting in through the eyepiece/viewfinder that is fouling the exposure in the Auto mode.

Is your eye piece closed during the shot?  Do you know what I mean?
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duraace

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Shooting with ND 10-stop???
« Reply #2 on: August 24, 2009, 02:30:27 pm »

That appears to have done the trick.  It never would have occurred to me.  Thanks!  Nice feature of the D700 is that it has a switch to close the view finder eyepiece.
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Jeremy Payne

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Shooting with ND 10-stop???
« Reply #3 on: August 24, 2009, 02:40:51 pm »

Quote from: duraace
That appears to have done the trick.  It never would have occurred to me.  Thanks!  Nice feature of the D700 is that it has a switch to close the view finder eyepiece.
Glad that worked!
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Nick Rains

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Shooting with ND 10-stop???
« Reply #4 on: August 24, 2009, 07:17:26 pm »

Quote from: Jeremy Payne
One thing I can think of (maybe) is that there is light getting in through the eyepiece/viewfinder that is fouling the exposure in the Auto mode.

Is your eye piece closed during the shot?  Do you know what I mean?


Good advice. I was horrified to find that the Phase camera is also very susceptible to this, with or without filters. If you use auto and take your eye from the viewfinder to shoot, watch those histograms!
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Nick Rains
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Chris Pollock

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Shooting with ND 10-stop???
« Reply #5 on: August 24, 2009, 07:36:31 pm »

Can you tell me what brand and model your filter is, and where you got it?

I've got a couple of roughly 9 stop filters (Hoya and Kenko ND-400) which are pretty hard to get hold of. I've never seen a 10 top filter before.
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duraace

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Shooting with ND 10-stop???
« Reply #6 on: August 24, 2009, 07:54:23 pm »

Sure ... it's a B&W 1000x or 10 stop from the UK.  I bought it at Beau Photo in Vancouver, B.C.   Not cheap. A little hard to use, in that you must remove it in order to be a able to focus.  Auto focusing must be detached from pressing the shutter, or you could manual focus.  My use for it will be to take black and white delayed exposures of landscape objects.
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DaveJ

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Shooting with ND 10-stop???
« Reply #7 on: August 24, 2009, 09:36:50 pm »

Quote from: duraace
Sure ... it's a B&W 1000x or 10 stop from the UK.  I bought it at Beau Photo in Vancouver, B.C.   Not cheap. A little hard to use, in that you must remove it in order to be a able to focus.  Auto focusing must be detached from pressing the shutter, or you could manual focus.  My use for it will be to take black and white delayed exposures of landscape objects.

Use live view and you can manually focus with the filter in place. You'll see the image just fine.
Dave
http://www.pbase.com/hockingphotos
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bradleygibson

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Shooting with ND 10-stop???
« Reply #8 on: August 24, 2009, 09:51:58 pm »

I once heard of a trick where you can get a variable 10-stop filter by using two polarizers.

Set 'em up in parallel and lose around 4 stops, turn 'em crosswise and lose 10+...

I haven't had an opportunity to try this yet--has anyone tried this?  Might be both cheaper and more versatile than a 10-stop filter, especially if, like me, you need a large diameter one.

Just a thought,
-Brad
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Sheldon N

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Shooting with ND 10-stop???
« Reply #9 on: August 24, 2009, 11:03:19 pm »

Quote from: bradleygibson
I once heard of a trick where you can get a variable 10-stop filter by using two polarizers.

Set 'em up in parallel and lose around 4 stops, turn 'em crosswise and lose 10+...

I haven't had an opportunity to try this yet--has anyone tried this?  Might be both cheaper and more versatile than a 10-stop filter, especially if, like me, you need a large diameter one.

Just a thought,
-Brad

That's how the Singh Ray Vari-ND filter works.
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Sheldon Nalos
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Dustbak

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Shooting with ND 10-stop???
« Reply #10 on: August 25, 2009, 02:10:12 am »

Quote from: Chris Pollock
Can you tell me what brand and model your filter is, and where you got it?

I've got a couple of roughly 9 stop filters (Hoya and Kenko ND-400) which are pretty hard to get hold of. I've never seen a 10 top filter before.

Kodak Wratten filters (gel filters) is what I use. The densest filter is a 14stops filter. They are hard to get nowadays and you must be careful they are thin and damage easily.
« Last Edit: August 25, 2009, 11:39:45 am by Dustbak »
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bradleygibson

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Shooting with ND 10-stop???
« Reply #11 on: August 25, 2009, 09:22:29 am »

Quote from: Sheldon N
That's how the Singh Ray Vari-ND filter works.

Ah!  That makes sense--thanks, Sheldon!
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-Brad
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