Guest Posted August 23, 2019 Share #21 Posted August 23, 2019 (edited) Advertisement (gone after registration) 38 minutes ago, Jeff S said: +1. Or any other fixed K setting. Jeff All shot at f4 ASA 100 and K5000 No filter 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! 10 stop 3 stop Looks like that 10 stop is knackered Edited August 23, 2019 by Guest Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! 10 stop 3 stop Looks like that 10 stop is knackered ' data-webShareUrl='https://www.l-camera-forum.com/topic/300596-white-balance-settings-when-using-nd-filters/?do=findComment&comment=3804387'>More sharing options...
Advertisement Posted August 23, 2019 Posted August 23, 2019 Hi Guest, Take a look here White balance settings when using ND filters. I'm sure you'll find what you were looking for!
Jeff S Posted August 23, 2019 Share #22 Posted August 23, 2019 Seems so, assuming camera is functioning properly and all other conditions and settings controlled. Jeff Link to post Share on other sites More sharing options...
Guest Posted August 23, 2019 Share #23 Posted August 23, 2019 9 minutes ago, Jeff S said: Seems so, assuming camera is functioning properly and all other conditions and settings controlled. Jeff On a Leica table top tripod at F4 ASA100. I will have a look online in the UK to see if I can get one shipped to my hotel in the Lake District.......... 60mm if I remember rightly Link to post Share on other sites More sharing options...
Guest Posted August 23, 2019 Share #24 Posted August 23, 2019 The only thing I can get online in the UK right now is the Breakthrough photography X4 CPL. I’m not sure if that will be dark enough to give me a 1 or 2 second exposure at F8 in midday light any thoughts neil Link to post Share on other sites More sharing options...
Jeff S Posted August 23, 2019 Share #25 Posted August 23, 2019 (edited) One review of many here... https://www.the-digital-picture.com/Reviews/10-Stop-Neutral-Density-Filter.aspx Color shifts can be an issue across some brands, and I suspect possible sample variation even within some brands. I don’t see Formatt Hitech brand included You might just have to test yourself, or just rely on profiling/PP techniques. Jeff Edited December 3, 2019 by jaapv Link to post Share on other sites More sharing options...
Guest Posted August 23, 2019 Share #26 Posted August 23, 2019 Google says a CPL will block out about 1.5 stops of light. I’m guessing stacking a 3 stop ND plus CPL will be enough to blur flowing water in midday light....... maybe neil Link to post Share on other sites More sharing options...
jaapv Posted August 23, 2019 Share #27 Posted August 23, 2019 Advertisement (gone after registration) 8 hours ago, NW67 said: All shot at f4 ASA 100 and K5000 No filter 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! 10 stop 3 stop Looks like that 10 stop is knackered It certainly seems so. A difficult cast to compensate completely, especially if you have reds in the image. I suspect that the main issue is that the filter does not reduce IR light. That second photo is fairly typical for an IR-contaminated image. You give it a try using it stacked with an IR cut filter (B+W 486) Link to post Share on other sites More sharing options...
jaapv Posted August 23, 2019 Share #28 Posted August 23, 2019 2 hours ago, jaapv said: It certainly seems so. A difficult cast to compensate completely, especially if you have reds in the image. I suspect that the main issue is that the filter does not reduce IR light.That second photo is fairly typical for an IR-contaminated image. You give it a try using it stacked with an IR cut filter (B+W 486) I’ve just looked it up in the B+W filter handbook and this is exactly what is happening and yes, B+W recommends stacking with a 486 filter. Problem solved. Link to post Share on other sites More sharing options...
Jeff S Posted August 23, 2019 Share #29 Posted August 23, 2019 1 hour ago, jaapv said: I’ve just looked it up in the B+W filter handbook and this is exactly what is happening and yes, B+W recommends stacking with a 486 filter. Problem solved. And the link I provided also demonstrated red shift. Jeff Link to post Share on other sites More sharing options...
jaapv Posted August 23, 2019 Share #30 Posted August 23, 2019 Yes, it does, but lacks an explanation. IR colour shifts are particularly bothersome on Leica cameras. Focus shift might be an issue as well. It just demonstrates that using extreme ND filters should be avoided as much as possible - these are specialist tools, only to be used when one wishes to get a specific effect. Just screwing them on to get to f8 is not a good idea. On a side-note: polarizers exhibit the same issues. Neil's idea of stacking a polfilter and an ND is unlikely to give a better result. Link to post Share on other sites More sharing options...
jaapv Posted August 24, 2019 Share #31 Posted August 24, 2019 6 hours ago, NW67 said: Google says a CPL will block out about 1.5 stops of light. I’m guessing stacking a 3 stop ND plus CPL will be enough to blur flowing water in midday light....... maybe neil As B+W recommends: stack your ND filter with a 486 filter. Link to post Share on other sites More sharing options...
Jeff S Posted August 24, 2019 Share #32 Posted August 24, 2019 (edited) 28 minutes ago, jaapv said: Yes, it does, but lacks an explanation. IR colour shifts are particularly bothersome on Leica cameras. Focus shift might be an issue as well. It just demonstrates that using extreme ND filters should be avoided as much as possible - these are specialist tools, only to be used when one wishes to get a specific effect. Just screwing them on to get to f8 is not a good idea. On a side-note: polarizers exhibit the same issues. Neil's idea of stacking a polfilter and an ND is unlikely to give a better result. The Hoya Pro ND filters with ACCU-ND coating did not exhibit color shift like the other tested high density ND filters (but has other apparent issues). I didn’t find any specifics on the coating properties, except metallic based, which I wonder if constitutes an IR blocking component. Jeff Edited August 24, 2019 by Jeff S Link to post Share on other sites More sharing options...
jaapv Posted August 24, 2019 Share #33 Posted August 24, 2019 That means that their spectral response extends into the IR wavelenghts. B+W clearly not. I doubt whether it is the coating. IR filtering is normally by absorption, not by reflection. It must be the optical glass used and the thickness thereof. Which might explain the poor optical performance. Link to post Share on other sites More sharing options...
Jeff S Posted August 24, 2019 Share #34 Posted August 24, 2019 (edited) Could be. The Formatt Hitech filters claim to address all issues required to render true neutral response. https://www.formatt-hitech.com/learn-neutral-density I’d never use a 10 stop filter, and tire of long exposure effects (right up there with bokeh craze for me), so I’ll leave to others for testing. Jeff Edited December 3, 2019 by jaapv Link to post Share on other sites More sharing options...
jaapv Posted August 24, 2019 Share #35 Posted August 24, 2019 9 minutes ago, Jeff S said: I’d never use a 10 stop filter, and tire of long exposure effects (right up there with bokeh craze for me), so I’ll leave to others for testing. +1! 1 Link to post Share on other sites More sharing options...
Guest Posted August 24, 2019 Share #36 Posted August 24, 2019 6 hours ago, jaapv said: I’ve just looked it up in the B+W filter handbook and this is exactly what is happening and yes, B+W recommends stacking with a 486 filter. Problem solved. Problem not solved.......... how do I get a 486 delivered on Monday in the UK when it’s a bank holiday? neil Link to post Share on other sites More sharing options...
andybarton Posted August 24, 2019 Share #37 Posted August 24, 2019 Depending on which size.... Amazon Link to post Share on other sites More sharing options...
Guest Posted August 24, 2019 Share #38 Posted August 24, 2019 6 minutes ago, andybarton said: Depending on which size.... Amazon Amp on are showing 31st. I fly back to thailyon the 31st Link to post Share on other sites More sharing options...
andybarton Posted August 24, 2019 Share #39 Posted August 24, 2019 Ok. Not my fault! They can get some sizes to you tomorrow. Link to post Share on other sites More sharing options...
andybarton Posted August 24, 2019 Share #40 Posted August 24, 2019 If you really need one you could call Wilkinson’s in Preston to see if they have one in stock and drive there to pick it up. Ditto Leica Manchester Or any camera dealer in the NW All open today Link to post Share on other sites More sharing options...
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