Comments on: Diffusion for the Digital Age: The Use of Glass Filtration http://www.hurlbutvisuals.com/blog/2012/06/diffusion-for-the-digital-age-the-use-of-glass-filtration/ Create | Innovate | Educate Fri, 24 May 2013 17:20:03 +0200 hourly 1 http://wordpress.org/?v=3.4.2 By: Shane http://www.hurlbutvisuals.com/blog/2012/06/diffusion-for-the-digital-age-the-use-of-glass-filtration/comment-page-1/#comment-60137 Shane Thu, 04 Apr 2013 05:07:56 +0000 http://www.hurlbutvisuals.com/blog/?p=6646#comment-60137 RFS. I love the Tiffen Warm-Soft FX. RFS. I love the Tiffen Warm-Soft FX.

]]> By: Shane http://www.hurlbutvisuals.com/blog/2012/06/diffusion-for-the-digital-age-the-use-of-glass-filtration/comment-page-1/#comment-60136 Shane Thu, 04 Apr 2013 05:04:16 +0000 http://www.hurlbutvisuals.com/blog/?p=6646#comment-60136 Vince Gortho. I would say a rear net is the closest to that. Thanks for the comment and support. Vince Gortho. I would say a rear net is the closest to that. Thanks for the comment and support.

]]> By: vince gortho http://www.hurlbutvisuals.com/blog/2012/06/diffusion-for-the-digital-age-the-use-of-glass-filtration/comment-page-1/#comment-59499 vince gortho Thu, 28 Mar 2013 21:52:54 +0000 http://www.hurlbutvisuals.com/blog/?p=6646#comment-59499 Hello Shane, thank you for all the wonderful input; you truly are a beacon for inspiration. There are a lot of filters mentioned here. Im curious about which one acts like the way video looks when shot through metal mesh? Similar to the results when holding your lens up to a screen door to shoot a hot sunny day. Thank you. Hello Shane, thank you for all the wonderful input; you truly are a beacon for inspiration.
There are a lot of filters mentioned here. Im curious about which one acts like the way video looks when shot through metal mesh?
Similar to the results when holding your lens up to a screen door to shoot a hot sunny day.
Thank you.

]]> By: RFS http://www.hurlbutvisuals.com/blog/2012/06/diffusion-for-the-digital-age-the-use-of-glass-filtration/comment-page-1/#comment-59483 RFS Thu, 28 Mar 2013 16:34:27 +0000 http://www.hurlbutvisuals.com/blog/?p=6646#comment-59483 I never understood what warming filters were for until recently when I was shooting a very pale midwesterner in afternoon sun outdoors about 3 o'clock. His skin was corpse-like grey through the LCD, but the Tiffen Warm-Soft F/X 1 gave him healthy, yet subtle looking skin tone and knocked back his wrinkles just enough to make him look distinguished. I love that filter. I never understood what warming filters were for until recently when I was shooting a very pale midwesterner in afternoon sun outdoors about 3 o’clock. His skin was corpse-like grey through the LCD, but the Tiffen Warm-Soft F/X 1 gave him healthy, yet subtle looking skin tone and knocked back his wrinkles just enough to make him look distinguished. I love that filter.

]]> By: Shane http://www.hurlbutvisuals.com/blog/2012/06/diffusion-for-the-digital-age-the-use-of-glass-filtration/comment-page-1/#comment-51046 Shane Sun, 10 Feb 2013 04:55:22 +0000 http://www.hurlbutvisuals.com/blog/?p=6646#comment-51046 Kevin, not advisable to stack filtration, too much softening in not good way Kevin, not advisable to stack filtration, too much softening in not good way

]]> By: Kevin http://www.hurlbutvisuals.com/blog/2012/06/diffusion-for-the-digital-age-the-use-of-glass-filtration/comment-page-1/#comment-50123 Kevin Fri, 01 Feb 2013 00:55:01 +0000 http://www.hurlbutvisuals.com/blog/?p=6646#comment-50123 Thanks for the awesome post. One question. I know you talked about stacking ND's but does the same apply to a black pro mist? Can you even stack a black pro mist? Thanks for the awesome post. One question. I know you talked about stacking ND’s but does the same apply to a black pro mist? Can you even stack a black pro mist?

]]> By: Shane http://www.hurlbutvisuals.com/blog/2012/06/diffusion-for-the-digital-age-the-use-of-glass-filtration/comment-page-1/#comment-19267 Shane Wed, 24 Oct 2012 04:51:01 +0000 http://www.hurlbutvisuals.com/blog/?p=6646#comment-19267 Joe Homokay, Panavision/Hollywood Joe Homokay, Panavision/Hollywood

]]> By: Joe Homokay http://www.hurlbutvisuals.com/blog/2012/06/diffusion-for-the-digital-age-the-use-of-glass-filtration/comment-page-1/#comment-19121 Joe Homokay Tue, 23 Oct 2012 00:03:54 +0000 http://www.hurlbutvisuals.com/blog/?p=6646#comment-19121 Anyone know where you can rent Tiffen Digital Diffusion 2 in Los Angeles? Anyone know where you can rent Tiffen Digital Diffusion 2 in Los Angeles?

]]> By: Misha Mazor http://www.hurlbutvisuals.com/blog/2012/06/diffusion-for-the-digital-age-the-use-of-glass-filtration/comment-page-1/#comment-16492 Misha Mazor Sat, 29 Sep 2012 18:06:30 +0000 http://www.hurlbutvisuals.com/blog/?p=6646#comment-16492 Hey, Anybody know what diffusion was used in the film "Life As We Know It"? It is very pronounced for a contemporary film. Trailer link: http://www.youtube.com/watch?v=mqzjDrrZIdE Thx, Misha Hey,
Anybody know what diffusion was used in the film “Life As We Know It”? It is very pronounced for a contemporary film.

Trailer link: http://www.youtube.com/watch?v=mqzjDrrZIdE

Thx,
Misha

]]> By: Rick http://www.hurlbutvisuals.com/blog/2012/06/diffusion-for-the-digital-age-the-use-of-glass-filtration/comment-page-1/#comment-14394 Rick Thu, 19 Jul 2012 21:16:34 +0000 http://www.hurlbutvisuals.com/blog/?p=6646#comment-14394 One word of extreme caution about using rear-mounted filters, particularly glass ones. The additional optical thickness at that point in the light train is very apt to throw off your lens's focus scale. Bolex users may remember the advisory if their camera's lens flange was set up for using behind-the-lens GEL filters (which are typically a LOT thinner than glass!) if you didn't need filtration like ND, 85 &c, you should keep a clear or UV filter in the gel carrier so as not to throw off the focus calibration. The effect of additional optical thickness when using behind-the-lens filters shows up worst on wide-angle lenses. Wides, for a given aperture, have huge depth-of-field, but very little depth-of-focus (which is like depth-of-field, but on the camera, rather than the subject side of the lens). The two terms are NOT interchangeable. Contrariwise, for a given aperture, telephoto lenses have poor depth-of-field, but rather more depth-of-focus. Ask any camera technician, and they'll tell you flange depth is much more critical to set for wide angle lenses. So if you're using a behind-the-lens filter, especially with a wide-angle lens, and you start having phantom focus issues, look at your filter as being a likely culprit. GREAT advice, Shane! A most useful posting! One word of extreme caution about using rear-mounted filters, particularly glass ones. The additional optical thickness at that point in the light train is very apt to throw off your lens’s focus scale.

Bolex users may remember the advisory if their camera’s lens flange was set up for using behind-the-lens GEL filters (which are typically a LOT thinner than glass!) if you didn’t need filtration like ND, 85 &c, you should keep a clear or UV filter in the gel carrier so as not to throw off the focus calibration.

The effect of additional optical thickness when using behind-the-lens filters shows up worst on wide-angle lenses. Wides, for a given aperture, have huge depth-of-field, but very little depth-of-focus (which is like depth-of-field, but on the camera, rather than the subject side of the lens). The two terms are NOT interchangeable. Contrariwise, for a given aperture, telephoto lenses have poor depth-of-field, but rather more depth-of-focus. Ask any camera technician, and they’ll tell you flange depth is much more critical to set for wide angle lenses.

So if you’re using a behind-the-lens filter, especially with a wide-angle lens, and you start having phantom focus issues, look at your filter as being a likely culprit.

GREAT advice, Shane! A most useful posting!

]]> By: Carlos http://www.hurlbutvisuals.com/blog/2012/06/diffusion-for-the-digital-age-the-use-of-glass-filtration/comment-page-1/#comment-14372 Carlos Thu, 19 Jul 2012 09:52:07 +0000 http://www.hurlbutvisuals.com/blog/?p=6646#comment-14372 Thanks Shane! Filmtools doesn't have it in stock as well at the moment! But I'll find it somewhere. Here's a rough ND calculation I found in a forum, it can be useful for someone... f22 (base exposure no ND) f16 (.3 ND) f11 (.6ND) f8 (.9ND) f5.6 (1.2ND) f4 (1.5ND) f2.8 (1.8ND) All the best! Thanks Shane! Filmtools doesn’t have it in stock as well at the moment! But I’ll find it somewhere. Here’s a rough ND calculation I found in a forum, it can be useful for someone…

f22 (base exposure no ND)
f16 (.3 ND)
f11 (.6ND)
f8 (.9ND)
f5.6 (1.2ND)
f4 (1.5ND)
f2.8 (1.8ND)

All the best!

]]> By: Shane http://www.hurlbutvisuals.com/blog/2012/06/diffusion-for-the-digital-age-the-use-of-glass-filtration/comment-page-1/#comment-14363 Shane Thu, 19 Jul 2012 00:44:08 +0000 http://www.hurlbutvisuals.com/blog/?p=6646#comment-14363 Carlos. Thanks for the kind words and support. The Tiffen HV ND kit will work great and is designed for HDSLR video. The level of ND you want to use depends on how much you light you are trying to cut. A .3 ND will reduce it by one stop, a .6 two stops, and so on. If you can't find the kit you need on B&H give film tools a shot www.filmtools.com. Carlos. Thanks for the kind words and support. The Tiffen HV ND kit will work great and is designed for HDSLR video. The level of ND you want to use depends on how much you light you are trying to cut. A .3 ND will reduce it by one stop, a .6 two stops, and so on. If you can’t find the kit you need on B&H give film tools a shot http://www.filmtools.com.

]]> By: Carlos http://www.hurlbutvisuals.com/blog/2012/06/diffusion-for-the-digital-age-the-use-of-glass-filtration/comment-page-1/#comment-14352 Carlos Wed, 18 Jul 2012 11:03:49 +0000 http://www.hurlbutvisuals.com/blog/?p=6646#comment-14352 Hi Shane, thanks for all the great info. I want to get your ND Filter Kit but B&H only has the 77mm Indie Plus HV Filter Kit in stock at the moment. I'm really keen in getting filters quickly. I'm shooting most of my stuff outside with a 5d on a 50mm 1.4 at f4 to f6. Do you think the Indie Plus HV Filter Kit will be to strong for my needs (I want to keep shutter speed at 1/50?) Thanks for your support :) Hi Shane, thanks for all the great info. I want to get your ND Filter Kit but B&H only has the 77mm Indie Plus HV Filter Kit in stock at the moment. I’m really keen in getting filters quickly. I’m shooting most of my stuff outside with a 5d on a 50mm 1.4 at f4 to f6. Do you think the Indie Plus HV Filter Kit will be to strong for my needs (I want to keep shutter speed at 1/50?) Thanks for your support :)

]]> By: Bill Hamell http://www.hurlbutvisuals.com/blog/2012/06/diffusion-for-the-digital-age-the-use-of-glass-filtration/comment-page-1/#comment-13985 Bill Hamell Sun, 01 Jul 2012 02:18:07 +0000 http://www.hurlbutvisuals.com/blog/?p=6646#comment-13985 Shane,thank you for the knowledge! :) Shane,thank you for the knowledge! :)

]]> By: Shane http://www.hurlbutvisuals.com/blog/2012/06/diffusion-for-the-digital-age-the-use-of-glass-filtration/comment-page-1/#comment-13931 Shane Thu, 28 Jun 2012 00:32:04 +0000 http://www.hurlbutvisuals.com/blog/?p=6646#comment-13931 Bill Hamell. Thats a good idea, but I haven't come across any glass diffusion that small. Having the net further from the rear element should have a less prominent effect. Try experimenting with different amounts of stretch on the net and placements to find what you like best. Thanks for the comment and support. Bill Hamell. Thats a good idea, but I haven’t come across any glass diffusion that small. Having the net further from the rear element should have a less prominent effect. Try experimenting with different amounts of stretch on the net and placements to find what you like best. Thanks for the comment and support.

]]> By: Shane http://www.hurlbutvisuals.com/blog/2012/06/diffusion-for-the-digital-age-the-use-of-glass-filtration/comment-page-1/#comment-13911 Shane Tue, 26 Jun 2012 23:18:41 +0000 http://www.hurlbutvisuals.com/blog/?p=6646#comment-13911 Alex. Thanks for the kind words and support. Alex. Thanks for the kind words and support.

]]> By: Shane http://www.hurlbutvisuals.com/blog/2012/06/diffusion-for-the-digital-age-the-use-of-glass-filtration/comment-page-1/#comment-13910 Shane Tue, 26 Jun 2012 23:18:26 +0000 http://www.hurlbutvisuals.com/blog/?p=6646#comment-13910 Alex. Thanks for the comment and support. It depends on the look you're going for. I usually go for heavier diffusion on a wide lens because a wider lens doesn't compress the diffusion like a long lens would. So in order to make the diffusion more prominent on a wide shot you need a heavier set of diffusion on the lens. However if you want a sharper more detailed wide shot, then you should use less diffusion or none at all. Just creative choices. Alex. Thanks for the comment and support. It depends on the look you’re going for. I usually go for heavier diffusion on a wide lens because a wider lens doesn’t compress the diffusion like a long lens would. So in order to make the diffusion more prominent on a wide shot you need a heavier set of diffusion on the lens. However if you want a sharper more detailed wide shot, then you should use less diffusion or none at all. Just creative choices.

]]> By: Shane http://www.hurlbutvisuals.com/blog/2012/06/diffusion-for-the-digital-age-the-use-of-glass-filtration/comment-page-1/#comment-13909 Shane Tue, 26 Jun 2012 23:14:26 +0000 http://www.hurlbutvisuals.com/blog/?p=6646#comment-13909 Sean. Thanks for the comment and support. On this test the aperture did not change, its the filtration affecting the highlights from the bokeh. Sean. Thanks for the comment and support. On this test the aperture did not change, its the filtration affecting the highlights from the bokeh.

]]> By: Shane http://www.hurlbutvisuals.com/blog/2012/06/diffusion-for-the-digital-age-the-use-of-glass-filtration/comment-page-1/#comment-13907 Shane Tue, 26 Jun 2012 23:11:28 +0000 http://www.hurlbutvisuals.com/blog/?p=6646#comment-13907 David. Thanks so much for the kind words and support. David. Thanks so much for the kind words and support.

]]> By: Shane http://www.hurlbutvisuals.com/blog/2012/06/diffusion-for-the-digital-age-the-use-of-glass-filtration/comment-page-1/#comment-13906 Shane Tue, 26 Jun 2012 23:11:06 +0000 http://www.hurlbutvisuals.com/blog/?p=6646#comment-13906 Chris Marino. Thanks for the comment and support. Chris Marino. Thanks for the comment and support.

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