Re: Filter Factors Page Updated

2001-12-27 Thread David Brooks
Thanks Shel.I personally don't use filters very often but one never knows, does one. Consider it bookmarked. Score another one for the great people on the PDML Dave Brooks Begin Original Message From: Shel Belinkoff <[EMAIL PROTECTED]> Sent: Thu, 27 Dec 2001 07:56:16 -0800 To: Pentax L

Re: Filter Factors

2001-09-23 Thread Mark Roberts
"Anand DHUPKAR" <[EMAIL PROTECTED]> wrote: >I think I missed some e-mails, however, there was some discussion on 13% >grey or 18% grey. Would someone explain that part to me a bit ? >More importantly, is there any book which would explain the zone system ? There was a long thread on this subje

Re: Filter Factors

2001-09-22 Thread Anand DHUPKAR
>Reply-To: [EMAIL PROTECTED] >To: [EMAIL PROTECTED] >Subject: Re: Filter Factors >Date: Sun, 16 Sep 2001 21:33:40 -0400 > >I agree with Shel again! :-) I'm a big fan of spot metering, and I use >my old analog Pentax Spotmeter extensively, particularly when I have to >get s

Re: Filter Factors

2001-09-17 Thread Anthony Farr
I sent this message over 24hrs ago but have yet to see it return from PDML, so I'll repost. My apologies to the list if it appears twice. __ Seems that you tested the filter factor from essentially neutral coloured samples. While a certain sha

Re: Filter Factors

2001-09-17 Thread Anthony Farr
- Original Message - From: "Bob Rapp" <[EMAIL PROTECTED]> > Reflectivity (not reflections) from the whitest white to the deepest black > (not deep shadows) covers a 5 stop range. That is to say in an evenly > illuminated scene of varied objects, the difference between the deepest > blac

Re: Filter Factors

2001-09-16 Thread Bob Rapp
Farr" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, September 17, 2001 2:21 PM Subject: Re: Filter Factors > This technique gives you the lighting ratio but it doesn't take into > account the varying reflectivities of different parts of the scene. > Thi

Re: Filter Factors

2001-09-16 Thread Anthony Farr
This technique gives you the lighting ratio but it doesn't take into account the varying reflectivities of different parts of the scene. This can only be done with a reflective meter, a spot meter being the type best suited to targeting discrete parts of a scene. Regards, Anthony Farr - Orig

Re: Filter Factors

2001-09-16 Thread Anthony Farr
Seems that you tested the filter factor from essentially neutral coloured samples. While a certain shade of grey (13% or 18% depending on equipment calibration and personal preference) is the result of an average scene integrated to a nominal average brightness, the result of a colour integration

Re: Filter Factors

2001-09-16 Thread Bob Rapp
Behalf Of > > Shel Belinkoff > > Sent: Sunday, September 16, 2001 8:23 PM > > To: [EMAIL PROTECTED] > > Subject: Re: Filter Factors > > > > > > Len, > > > > you make it sound as though using a spotmeter is some sort of > > protracted and complicated e

RE: Filter Factors

2001-09-16 Thread Len Paris
[mailto:[EMAIL PROTECTED]]On Behalf Of > Shel Belinkoff > Sent: Sunday, September 16, 2001 8:23 PM > To: [EMAIL PROTECTED] > Subject: Re: Filter Factors > > > Len, > > you make it sound as though using a spotmeter is some sort of > protracted and complicated experience.

Re: Filter Factors

2001-09-16 Thread PAUL STENQUIST
I agree with Shel again! :-) I'm a big fan of spot metering, and I use my old analog Pentax Spotmeter extensively, particularly when I have to get something right. Most often I'll take a reading on the darkest shadow area that I want to record, then stop down 2 stops from that exposure. That puts

Re: Filter Factors

2001-09-16 Thread Bob Rapp
- Original Message - From: "Len Paris" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, September 17, 2001 5:27 AM Subject: RE: Filter Factors > > That's a good observation from experience. I may be > old-fashioned but, when I use filters, I

RE: Filter Factors

2001-09-16 Thread Len Paris
> I don't think it is possible to get a really accurate meter > reading from any built in camera meter when metering through a > coloured filter because of meter non linearity. All of my > cameras, including the newer MZ-5 shows severe meter > innacuracy > when metering through coloured filters. I

Re: Filter Factors

2001-09-16 Thread William Robb
- Original Message - From: "Shel Belinkoff" Sent: Sunday, September 16, 2001 12:43 PM Subject: Filter Factors > Everything I've read recently, including the information sheet packed > with my new Pentax SMC filters (my thanks to those who helped me get > these great filters) suggests tha