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FORUMS Photo Sharing & Visual Enjoyment Nature & Landscapes 
Thread started 21 Nov 2009 (Saturday) 12:47
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Post your 9 or 10 stop ND photos

 
titaniumsportz
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Jun 15, 2011 19:20 |  #2506

ryan the geek wrote in post #12597796 (external link)
Titan,
I love it, great comp and sharpness is incredible!! I personally like the heavy vignetting, but its easily correctable in post.

For the CC the only thing I would change would be the magenta cast most likely created by the filter. Your water is color tinted a tad.

Great shot, keep them coming.

Magenta cast? U think I have a leakage thats why its heavy on magenta? or it just cause by cpl or nd filters?



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Scapevision
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Jun 15, 2011 22:20 |  #2507

the cast is known among strong ND's


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titaniumsportz
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Jun 16, 2011 00:25 |  #2508

3rd take

just convert it to bw .. c/c strongly appreciated!

Thank you

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Jun 16, 2011 00:44 |  #2509

titaniumsportz wrote in post #12601975 (external link)
3rd take

just convert it to bw .. c/c strongly appreciated!

Thank you

QUOTED IMAGE

awesome! Now I'm jealous I don't have any great seascapes over here in lower NY.


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pwm2
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Jun 16, 2011 00:58 |  #2510

Scapevision wrote in post #12601412 (external link)
the cast is known among strong ND's

Newer cameras normally have decent internal IR reduction filters (which is thre reason they needs to be modified for IR photography)

Some ND filters blocks more visible and UV light than they manage to block IR light. And when the ND filter is very strong, the amount of IR that gets through the ND filter during the long exposures may become strong enough that the IR filter on the camera sensor will not be enough. So the red color channel of the sensor will then pick up significant amounts of IR.


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ryan ­ the ­ geek
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Jun 16, 2011 08:44 |  #2511

^
PWM2 nailed it. Fantastic seascape! I really enjoy the clouds coming at the camera, strong sense of motion along with the great composition. 10 stops are VERY addicting!!


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Scapevision
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Jun 16, 2011 10:19 |  #2512

pwm2 wrote in post #12602067 (external link)
Newer cameras normally have decent internal IR reduction filters (which is thre reason they needs to be modified for IR photography)

Some ND filters blocks more visible and UV light than they manage to block IR light. And when the ND filter is very strong, the amount of IR that gets through the ND filter during the long exposures may become strong enough that the IR filter on the camera sensor will not be enough. So the red color channel of the sensor will then pick up significant amounts of IR.

That raises a question: would using an additional IR blocking filter help against the cast?


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TheReal7
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Jun 16, 2011 10:52 |  #2513

titaniumsportz wrote in post #12601975 (external link)
3rd take

just convert it to bw .. c/c strongly appreciated!

Thank you

QUOTED IMAGE

That is really nice Jeff. I'd work the blown highlights a little to make them less noticeable but really everything else about it!


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JayZ235
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Jun 16, 2011 12:21 |  #2514

Wohoo! Finally finished reading through all 168 pages :) I posted last week or so that i ordered my B+W 10-stop and shipping date was between 16-21 of this month. Well it actually arrived yesterday but i've just been too busy to use it! Thankfully i have the day off work tomorrow and can't wait to start playing with it. There are a number of rivers and falls here in MN and i already know where i'll be going tomorrow (some simply superb ~40 foot falls)

I went with the 77mm filter for my 10-22 and that is the most common filter size as i upgrade the rest of my lenses to L's over the years. Picking up a brass (edit) 67-77 step **up** ring for my 70-200 f/4 (not sure how often i'll want to use it on that lens, but might as well just in case). Can't wait to start contributing to this thread!




  
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pwm2
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Jun 16, 2011 12:58 |  #2515

Scapevision wrote in post #12603728 (external link)
That raises a question: would using an additional IR blocking filter help against the cast?

Possibly. But who sells such filters? The IR filters normally found in camera shops are filters that blocks visible light but are transparent to IR, while in this case there is a need for a filter that blocks IR.

A problem is at what wavelength the ND and the IR filters have their breakpoints. Remember that a 10 stop ND filter removes 999 out of 1000 of the light. That means that it takes significant filtering of the IR too.

See for example the B+W 110 filter curve:
https://www.schneidero​ptics.com …terTransmission​Curves.pdf (external link)

You have an almost total blocking of UV, but the stronger filters just can't manage to hold back enough IR. And the stronger the filter is, the closer we get to the visible red.


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titaniumsportz
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Jun 16, 2011 13:03 |  #2516

Thanks scott ... I just admired your wk and it just inspired me too shoot more.. To jay I feel u my brotha just post your first take here..

Does anybody here stack the nd110 n ir filter like hoya r67? Just wanna get a feedback if these combo wk well instead of cpl



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Scapevision
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Jun 16, 2011 13:28 |  #2517

Yeah, I'll stick to photographing instead of physics :)

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pwm2
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Jun 16, 2011 13:31 |  #2518

titaniumsportz wrote in post #12604572 (external link)
Thanks scott ... I just admired your wk and it just inspired me too shoot more.. To jay I feel u my brotha just post your first take here..

Does anybody here stack the nd110 n ir filter like hoya r67? Just wanna get a feedback if these combo wk well instead of cpl

Page 67 of this link has the filter curve for R67:
http://www.hoyafilter.​com/pdf/HOYACatalog.pd​f (external link)

The filter curve of the R67 indicates that it transmit 0% light for wavelengths shorter than 700nm. So no visible light. Nothing red. Nothing green. Nothing blue.

At the same time, it will send through IR - something the ND110 have a bit of problem blocking.

You would end up with something that is very, very, very bad at capturing visible light, and that gives maybe 6-10 stops blocking of IR - on top of the IR stopper you have in the camera. Where you planning on long-exposure IR photos?


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titaniumsportz
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Jun 16, 2011 14:19 |  #2519

Thanks pwm2 correct me if im wrong, so not a good idea to stack r67 ir filter with nd110 for a long exposure? If so, what filters can u stack the ir r67 filters? I was planning to convert my 40d to ir.... But since there are ir filters available, its cheaper to buy a ir filter than converting my 40d to ir.



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kingbob734
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Jun 16, 2011 15:03 |  #2520

This as very very nice :D


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Post your 9 or 10 stop ND photos
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