RE: Cross Polar Flash Photography (Re: Photographing Sequined Pumps )
Oh, yea. I forgot. This technique is also useful in photographing rocks. It brings out some interesting colors. -Original Message- From: Ann Sanfedele [SMTP:[EMAIL PROTECTED]] Sent: Monday, August 27, 2001 8:11 PM To: [EMAIL PROTECTED] Subject:Re: Cross Polar Flash Photography (Re: Photographing Sequined Pumps ) Kevin, again, thanks so much -- I'm leaving all you wrote below because I archive things in my sent mail - hope other PDMLers don't mind - I think your info is very um illuminating - and I'm not surprised that it turns up in something George Lepp wrote -- I used to read him religiously. Having studied a bit of Microscopic Petrology I knew about crossed Nichols. The prices you mention are not prohibitive. Best, Ann "Thornsberry, Kevin L" wrote: > > Ann > According to the Edmund Scientific website, polarizing film can be had for > about $15 for a sheet 8.5 inches by 5 inches or a 2 inch square 2 pack can > be had for $6.40. As I understand it you need two pretty strong strobes > since you'll be losing a lot of light. To orient the films overlay your > lens' polarizing filter with the film and rotate for miminum tranmittance. > Mark the top of the film and the top of the polarizing filter in this > orientation. Now when you install the film on the strobes and the filter on > your lens make sure your marks are still on top. In the applications I've > heard of the strobes were mounted on a bracket attached to the camera with > one strobe on each side. > To see an example of this technique in use go to www.leppimages.com and > choose to view the Shoreline Print collection. The sand dollar picture > labeled "Sparkling Embrace" (lower left on page 1) used the cross polar > technique. Note it retains the strongest reflections withouth the image > being overpowered. I'm not sure about the other two sand dollar pictures. > I'm sure an email to [EMAIL PROTECTED] would yield a list of which of his > images were made using the cross polar technique. > > Ann wrote: > >Kevin - so glad you brought that up -- I mentioned it almost > >a year ago when I first got on the list - no one seemed to > >know about it. I was basically asking for exactly > >what you explained - how to establish the angles. I was > >thinking of using floods instead of flashes, tho for the two > >auxiliary lights. > > >My idea was to "cross Nichols" looking through the camera at > >the polarizer on the light source(s) rotating the polarizer > >on the camera only 'til it turned black. > >I have an awful feeling those polarized sheets are expensive > >as all get out though. > > >annsan > > - > This message is from the Pentax-Discuss Mail List. To unsubscribe, > go to http://www.pdml.net and follow the directions. Don't forget to > visit the Pentax Users' Gallery at http://pug.komkon.org . - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org . application/ms-tnef
Re: Cross Polar Flash Photography (Re: Photographing Sequined Pumps )
Kevin, again, thanks so much -- I'm leaving all you wrote below because I archive things in my sent mail - hope other PDMLers don't mind - I think your info is very um illuminating - and I'm not surprised that it turns up in something George Lepp wrote -- I used to read him religiously. Having studied a bit of Microscopic Petrology I knew about crossed Nichols. The prices you mention are not prohibitive. Best, Ann "Thornsberry, Kevin L" wrote: > > Ann > According to the Edmund Scientific website, polarizing film can be had for > about $15 for a sheet 8.5 inches by 5 inches or a 2 inch square 2 pack can > be had for $6.40. As I understand it you need two pretty strong strobes > since you'll be losing a lot of light. To orient the films overlay your > lens' polarizing filter with the film and rotate for miminum tranmittance. > Mark the top of the film and the top of the polarizing filter in this > orientation. Now when you install the film on the strobes and the filter on > your lens make sure your marks are still on top. In the applications I've > heard of the strobes were mounted on a bracket attached to the camera with > one strobe on each side. > To see an example of this technique in use go to www.leppimages.com and > choose to view the Shoreline Print collection. The sand dollar picture > labeled "Sparkling Embrace" (lower left on page 1) used the cross polar > technique. Note it retains the strongest reflections withouth the image > being overpowered. I'm not sure about the other two sand dollar pictures. > I'm sure an email to [EMAIL PROTECTED] would yield a list of which of his > images were made using the cross polar technique. > > Ann wrote: > >Kevin - so glad you brought that up -- I mentioned it almost > >a year ago when I first got on the list - no one seemed to > >know about it. I was basically asking for exactly > >what you explained - how to establish the angles. I was > >thinking of using floods instead of flashes, tho for the two > >auxiliary lights. > > >My idea was to "cross Nichols" looking through the camera at > >the polarizer on the light source(s) rotating the polarizer > >on the camera only 'til it turned black. > >I have an awful feeling those polarized sheets are expensive > >as all get out though. > > >annsan > > - > This message is from the Pentax-Discuss Mail List. To unsubscribe, > go to http://www.pdml.net and follow the directions. Don't forget to > visit the Pentax Users' Gallery at http://pug.komkon.org . - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
Cross Polar Flash Photography (Re: Photographing Sequined Pumps )
Ann According to the Edmund Scientific website, polarizing film can be had for about $15 for a sheet 8.5 inches by 5 inches or a 2 inch square 2 pack can be had for $6.40. As I understand it you need two pretty strong strobes since you'll be losing a lot of light. To orient the films overlay your lens' polarizing filter with the film and rotate for miminum tranmittance. Mark the top of the film and the top of the polarizing filter in this orientation. Now when you install the film on the strobes and the filter on your lens make sure your marks are still on top. In the applications I've heard of the strobes were mounted on a bracket attached to the camera with one strobe on each side. To see an example of this technique in use go to www.leppimages.com and choose to view the Shoreline Print collection. The sand dollar picture labeled "Sparkling Embrace" (lower left on page 1) used the cross polar technique. Note it retains the strongest reflections withouth the image being overpowered. I'm not sure about the other two sand dollar pictures. I'm sure an email to [EMAIL PROTECTED] would yield a list of which of his images were made using the cross polar technique. Ann wrote: >Kevin - so glad you brought that up -- I mentioned it almost >a year ago when I first got on the list - no one seemed to >know about it. I was basically asking for exactly >what you explained - how to establish the angles. I was >thinking of using floods instead of flashes, tho for the two >auxiliary lights. >My idea was to "cross Nichols" looking through the camera at >the polarizer on the light source(s) rotating the polarizer >on the camera only 'til it turned black. >I have an awful feeling those polarized sheets are expensive >as all get out though. >annsan - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
