[pinhole-discussion] Why is paper contrasty?
I've thought this through but haven't completely verified it yet, but I wanted to see what others reaction is. BW paper used as a negative is said to be contrasty. What does this mean? BW paper has a sensitivity range of a little more than four stops for any given exposure. Burning and dodging increase tonal range by shortening or lengthening the exposure. If you meter a scene that has an eight stop tonal range and give the average exposure for the scene using a paper negative, you risk having the highlights blown out because they are more than two stops above average, and shadows go black because they are more than two stops below average. If the scene has a tonal range of only four or five stops, your negative won't be contrasty because all the tones lie within the range of the paper. What, then, to do in sunshiney scenes, for instance, where the tonal range might be eight or nine stops? If you place the highlight tones of the main object of your composition about two stops above average, you will get good tonality in important spots, no blown out highlights, even though you may get lots of black shadows. The implication is, much shorter exposure times (read higher ISO) in bright scenes than in shadowiy scenes (effctively lower ISO), using the same paper. My first tests suggest that a good ISO for Ilford multigrade in bright sunlight might be as high as 15, while 5 works well in shaded scenes. Any comments?
[pinhole-discussion] Long exposures and moving flowers and trees
Remember that just because an exposure is long doesn't mean you cannot interrupt it. I learned with large format pictures at dust, that you can cover the lens (easier on a pinhole) and continue the exposure when things stop moving. Tree branches, flowers and plants (ferns, etc.) will return to thier original position. Of course if the pesky wind is continuous then the blurred photo becomes artsy, right? _ Chat with friends online, try MSN Messenger: http://messenger.msn.com
Re: [pinhole-discussion] fogging in half-cylinder cameras.
Thanks. - Original Message - From: Andy Schmitt aschm...@warwick.net To: pinhole-discussion@p at ??? Sent: Thursday, July 11, 2002 12:08 PM Subject: RE: [pinhole-discussion] fogging in half-cylinder cameras. The regular matte paper should solve it. Also make sure the back of the metal that you made the PH out of is covered. Glossy paper is a nightmare in cylindrical cameras andy -Original Message- From: pinhole-discussion-admin@p at ??? [mailto:pinhole-discussion-admin@p at ???]On Behalf Of William Erickson Sent: Thursday, July 11, 2002 7:47 AM To: ppinhole discussion Subject: [pinhole-discussion] fogging in half-cylinder cameras. I have made a half cylinder camera for 8x10 negatives. I find that I have far more trouble with fogging due to interior reflection than I have ever seen with cylindrical cameras where the negative takes up only the back half of the cylinder. In this camera, the angle of view approaches 180 degrees, with the edges of the neg butted right up against the front of the camera. I haven't had fully matte paper to use, and haven't tried film yet, but I will. Has anyone used the polymax fine art paper that is double matte? I sent for some. has anyone tried some sort of a baffle system that might quench some of the random bouncing around of light? ___ Post to the list as PLAIN TEXT only - no HTML Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.???/discussion/ ___ Post to the list as PLAIN TEXT only - no HTML Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.???/discussion/
Re: [pinhole-discussion] close up flower shots
I just uploaded some close up pinhole images from a series that I have been working on for a little while now. If you are interested plese check them out at: Really nice abstractions. Would you mind sharing camera and film info?
Re: [pinhole-discussion] close up flower shots
Mysterious! - Original Message - From: Tim Rawling pin_...@hotmail.com To: pinhole-discussion@p at ??? Sent: Thursday, July 11, 2002 6:56 AM Subject: [pinhole-discussion] close up flower shots Hi all, I just uploaded some close up pinhole images from a series that I have been working on for a little while now. If you are interested plese check them out at: http://www.???/discussion/upload/gallery2002.php?pic=timr_pin tryp.jpg (paste the two lines together if they have wrapped) Cheers, Tim R _ Send and receive Hotmail on your mobile device: http://mobile.msn.com ___ Post to the list as PLAIN TEXT only - no HTML Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.???/discussion/
RE: [pinhole-discussion] close up flower shots
wonderful...nice lighting too thanks andy -Original Message- From: pinhole-discussion-admin@p at ??? [mailto:pinhole-discussion-admin@p at ???]On Behalf Of Tim Rawling Sent: Thursday, July 11, 2002 7:56 AM To: pinhole-discussion@p at ??? Subject: [pinhole-discussion] close up flower shots Hi all, I just uploaded some close up pinhole images from a series that I have been working on for a little while now. If you are interested plese check them out at: http://www.???/discussion/upload/gallery2002.php?pic=timr_pin tryp.jpg (paste the two lines together if they have wrapped) Cheers, Tim R _ Send and receive Hotmail on your mobile device: http://mobile.msn.com ___ Post to the list as PLAIN TEXT only - no HTML Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.???/discussion/
Re: [pinhole-discussion] lack of pinhole images on photosig
pinholeren...@netscape.net wrote: I have been looking at the photo site PHOTOSIG for pinhole images can find only a few.I would love to see more pinhole zoneplate images represented on the site.I would like to know if any of the people on the list post images on the site.lets get some more exposure for a great camera process. chip renner I have to admit I had never looked at this site before. It looks like there are less than a dozen pinholes, and tens of thousands of every thing else. I'm going to upload some pinholes and see what the response is like.
