I don't really know what's best to be honest. Some of the new LED units are looking pretty good while many continue to use HID and full spectrum fluorescents. For hot lights, Solux lamps are supposed to be very well filtered at both ends of the spectrum but you'd need a lot of them to light a large piece of art. Plastic sheeting used to filter U.V. is available cheaply in large rolls so it's easy to use it over any light source, but good IR filtration isn't so I use Schott glass IR filters behind the camera lens. I think LED and wide spectrum fluorescent are much better choices than quartz when it comes to IR, but as in the case with Solux which is internally filtered, each lamp is different so it's hard to generalize without comparing the manufacturer's data. -----Original Message----- From: Hal Hinderliter Sent: Sunday, May 26, 2013 10:25 AM To: John Castronovo Cc: Millers' Photography L.L.C. ; colorsync-users@lists.apple.com Subject: Re: B+W 77mm UV/IR Cut (486M) MRC Filter OK John, I'll bite - which type of studio lighting emits the least IR? (LED?) But what about UV, isn't that more important to reduce at the light source? And if so, what type of lights produce the least UV? Hal On May 26, 2013, at 2:00 AM, John Castronovo <jc@technicalphoto.com> wrote:
Does it help? The right place for filtering u.v. is at the light source. Once the artwork is fluorescing from u.v. light you can't filter the problem out at the camera. More IR filtration at the camera can help with some art, especially if you're using hot lights on a subject having colorants prone to metameric failure but it's still better to use lights that emit less IR in the first place.
-----Original Message----- From: Millers' Photography L.L.C. Sent: Sunday, May 26, 2013 12:55 AM To: colorsync-users@lists.apple.com List Subject: B+W 77mm UV/IR Cut (486M) MRC Filter
I must thank someone on this list that suggested purchasing the B+W 77mm UV/IR Cut (486M) MRC Filter for issues I had with reproducing a particular piece of original art. It was around June 15, 2012. I purchased a B+W 67mm UV/IR Cut (486M) MRC Filter as well. These filters are always on the shooting lens.
I don't remember who it was. I have been asked who it was. If you are out there, please respond.
Warm Regards,
David
David B Miller, Pharm. D. member Millers' Photography L.L.C. dba Spinnaker Photo Imaging Center Bellingham, WA www.spinnakerphotoimagingcenter.com 360 739 2826
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