B+W 10 Stop ND

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Snake Man

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Andy
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Looking for a 77mm 10 stop ND screw filter. Only found one place so far and that's Robert White @ £65 + VAT. Anyone know of anywhere cheaper?
 
^^^ Yeah, it's out of stock and has been for quite a while. Might give them a ring though - more likely to get them in if they know someone is waiting.
 
Good for you :), which spefic one did you end up with? I seem to find too many options that gets me confused :shrug:

As for heliopan, they are supposed to be just as good as B+W, while Kood is at the other end of the "food-chain"
 
Went for the B+W 77mm ND-110. Filter factor of 1000x!
 
Good choice (y)
 
Snake Man said:
Went for the B+W 77mm ND-110. Filter factor of 1000x!
Click to expand...

Its a good filter (Ive got one.)(y) As for quality brands, all my filters are B&W, but apparently Heliopan and Singh-Ray are equally as good. Ps. Have you got a remote shutter, as you'll need one for the lenght of exposures you'll be getting with that 10 stop ND. :)
 
Just a quicky involving maths!
A "1000x" filter reduces the incoming light to 1/1000th of it's original power.
Exposure values work in "stops" of light, which as you may know are exponential. Double the light = +1 to the EV.
Therefore we can use logarithms to work backwards. We want to do log_2, but most calculators have either a log_e or a log_10 button. To do log_2(x), we can do log(x)/log(2)

log(8)/log(2) = 3, so NDx8 takes 3 stops of light.
log(1000)/log(2) = 10, so NDx1000 takes away 10 stops of light.

Not meaning to teach anyone to suck eggs, but I've spoken to quite a few people recently who thought that NDx8 blocked 8 stops of light, or just worked out the relationship by testing it with their meter. It also helps if your in camera meter isn't accurate with the ND filter on. Just take the reading with it off, then apply the filter and set the exposure manually.
 
Blapto said:
Just a quicky involving maths!
A "1000x" filter reduces the incoming light to 1/1000th of it's original power.
Exposure values work in "stops" of light, which as you may know are exponential. Double the light = +1 to the EV.
Therefore we can use logarithms to work backwards. We want to do log_2, but most calculators have either a log_e or a log_10 button. To do log_2(x), we can do log(x)/log(2)

log(8)/log(2) = 3, so NDx8 takes 3 stops of light.
log(1000)/log(2) = 10, so NDx1000 takes away 10 stops of light.

Not meaning to teach anyone to suck eggs, but I've spoken to quite a few people recently who thought that NDx8 blocked 8 stops of light, or just worked out the relationship by testing it with their meter. It also helps if your in camera meter isn't accurate with the ND filter on. Just take the reading with it off, then apply the filter and set the exposure manually.
Click to expand...


Great post, thanks for this, I was totally clueless as to what is required.
 
Messiah Khan said:
Ps. Have you got a remote shutter, as you'll need one for the lenght of exposures you'll be getting with that 10 stop ND. :)
Click to expand...

Yep. Ordered one at the same time(y)

Blapto said:
Just take the reading with it off, then apply the filter and set the exposure manually.
Click to expand...

That is exactly what I was planning on doing. I'm sure there will be some trial and error at first but hopefully I will get the hang of it soon enough.
 
Grrr. Just had an email from warehouse saying the filter is actually out of stock. Hopefully won't have to wait too long.
 
Blapto said:
Just a quicky involving maths!
A "1000x" filter reduces the incoming light to 1/1000th of it's original power.
Exposure values work in "stops" of light, which as you may know are exponential. Double the light = +1 to the EV.
Therefore we can use logarithms to work backwards. We want to do log_2, but most calculators have either a log_e or a log_10 button. To do log_2(x), we can do log(x)/log(2)

log(8)/log(2) = 3, so NDx8 takes 3 stops of light.
log(1000)/log(2) = 10, so NDx1000 takes away 10 stops of light.

Not meaning to teach anyone to suck eggs, but I've spoken to quite a few people recently who thought that NDx8 blocked 8 stops of light, or just worked out the relationship by testing it with their meter. It also helps if your in camera meter isn't accurate with the ND filter on. Just take the reading with it off, then apply the filter and set the exposure manually.
Click to expand...

This is great (y), I always love it when someone jumps in and explains the science behind all this art! It sure adds a lot. Thank you so much for taking the time and effort to explain this.
 
Blapto said:
......

Just take the reading with it off, then apply the filter and set the exposure manually.
Click to expand...

Why would you do this? Would this not yield a darkened photo? Where-as most would use an ND to get "creamy-water" effect?!?
 
I hve always been tempted at one of these filters. Investing in lenses at the moment.
 
Wail said:
Why would you do this? Would this not yield a darkened photo? Where-as most would use an ND to get "creamy-water" effect?!?
Click to expand...

I meant it more along the lines of setting the exposure and manually compensating for the affect of the ND filter.
Along the lines of:
Camera meter suggests 1/60 seconds at f/16 at ISO100 (EV15). Your ND filter is 10 stops, so you can calculate that you need 30 seconds at f/16 at ISO100 (EV5) to have the same exposure.

After a while you'll start to work it out in your head quite quickly, but you can always use the knowledge that a "click" on your dial is either 1, 1/2 or 1/3 stops, depending on how you have your camera set up.

At EV5, your camera meter will probably cope quite well, but I know that my D300 won't meter accurately below EV0 or EV2 for spot metering. That's basically at night in the countryside, or exposures of over 2 seconds at f/2. I just tend to manually meter very set-up shots like this.
 
OK, that sounds logical .. thanks for the clarification :)
 
Snake Man said:
Grrr. Just had an email from warehouse saying the filter is actually out of stock. Hopefully won't have to wait too long.
Click to expand...

Probably about a month im afraid. I think most of these filters are ordered directly from B&W/Shneider. I ordered mine for Jessops and it took a month to arrive.
 
WooHoo. It arrived today. Was definitely not expecting that. Off to buy a stop watch in a bit as I've only got a generic cable release.
 
Just a quick snap shot with it. Was a bit too bright for a very long exposure.

2617716049_826fea705e_o.jpg
 
I am interested very much in your postings BUT I am a thicko when It comes to the camera. I only have my camera (nikon d200) so how do I work out the what settings I would need to use. (please use simple language)
 
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