Archived posting to the Leica Users Group, 2000/09/02
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Is the purpose of using Leica cameras to get the "fullest potential of our cameras and lenses" in a technical sense, or do we use Leica cameras because they are the tools with which we are most able to maken the photographs we want to make? Is the end result of photography resolving power, or does the resolving power of lenses allow us to eek out the most from the film we use to be able to record the images we want to record? Just wondering - and regularly shooting Tri-X at 800 because it allows me to make the photographs I want to make with my Leica lenses in the kind of light in which I am forced to make them. B. D. > -----Original Message----- > From: owner-leica-users@mejac.palo-alto.ca.us > [mailto:owner-leica-users@mejac.palo-alto.ca.us]On Behalf Of Richard > Comen > Sent: Saturday, September 02, 2000 2:36 PM > To: leica-users@mejac.palo-alto.ca.us; rpcomen@mcn.org > Subject: Re: [Leica] Black and White Film//Nachtwey//Rapidwinder > > > > Mark, I have felt for years that we are not getting the full > potential out > of our Leica cameras and lenses and the shortcoming to my thinking is > mostly in the film we use. It seems logical thast the film with the > greatest resolution would be best for us. This with out a doubt to me is > Kodak Technical Pan. The big drawback for all around use is its very slow > ASA with the conventional developers. So, several years ago a friend and I > undertook to formulate a brew that would give a satisfactory ASA > and also a > satisfactory range of tones and we definitely aarrived aat such a formula. > I have been using the method I will outline below for about four years now > and it works beautifully for very diverse types of subject matter. I now > use it for portraiture, theatre, symphony orchestra publicity, street > photography, landscape and most anything else you can name. I have placed > a few examples on: > > http://beta.content.communities.msn.com/Leicausers/PhotoAlbum > > After opening the above page, scroll to the bottom to my album entitled > Tech Pan at ASA 100. I am currently adding to the album as I get time and > am adding only imaages that are chalenging in the darkroom due to their > great range of values. > > The brew is easy to formulate and very inexpensive. The keeping qualities > are excellent. The brew is as follows. > > Directions for Pota-HC110 developer for processing Tech Pan at ASA 100: > > In 300 ml hot water mix 1 tablespoon Sodium Sulfite and 1/8 teaspoon > Phenidone . I use the set of plastic measuring spoons that come in a set > for kitchen use. To the above add 2 ml. HC110 syrup ( measure with a > child's medicine syringe found at any pharmacy ). > > > > 2 > > The measuring spoons mentioned above are just fine, extreme accuracy is > not necessary. Filter through coffee filter that is placed in a funnel. > The filtration is necessary as minute portions of the phenidone might not > disolve and your negs will dry spotted if filtration is not used. Cool to > 68 degrees F. Use stainless nikkor tank for one roll only. Discard > developer after one roll, ( Phenidone developer oxidizes rapidly > and should > be discarded after one roll). I place tank in a tray of water that is 68 > degrees to keep temp constant. Develop for 6 minutes. After filling tank, > rap tank to dislodge air bubbles, then give one gentle inversion over and > back. Place tank in water bath of 68 degrees. Agitation: Do not agitate > until beginning of third minute and at that time one gentle inversion over > and back. Repeat at top of each remaining minute. At end of 6 > min., drain, > use short stop, and follow with rapid fix for aprox 2 min. Wash as usual, > rinse in distilled water for final rinse, then instead of foto flow, pour > in rubbing alcohol ( I prefer it to foto flow. It is often on special at > pharmacies for 39 cents a bottle ). Let sit in alcohol for a minute or so, > discard alcohol and hang film to dry ( no squeegee or sponges as that is a > terrible thing to do to wet film). Hang in dust free place Because of > variations of meters, camera shutters, thermometers, and other variables, > you might want to adjust your time of development slightly. > > Since concocting the above brew formula, I have found that it simplifies > life to mix 3 liters of the above brew ( use 10 x the brew formula ), > filter as above and pour into 8 Oz. Brown glass bottles obtained from a > pharmacy. Fill each bottle so that there is no air and screw on top > tightly. I have found that using my last bottle 6 months after > mixing gives > the same results as with the first bottle used right after > mixing. All I do > is place a bottle into 68 degree water bath and when brew reaches the bath > temp, I pour it into the tank. > > ASA 200 can be achieved by increasing the developing temperature to 70 > degrees F. and following the rest of the above procedure. There will be a > loss in shadow detail however. > > The above gives me the best negatives I have ever made and they print > beautifully. The negs may appear a bit thick to some but with split > filtration even the most dense appearing highlights print > beautifully. The > beauty of Tech Pan is that one can take a small portion of the neg and > enlarge it to 11X14 with very little loss in quality. In full negative > printing the detail is exquisite unlike no other film I have ever used > assuming of course good camera and enlarger lenses and a well alligned > enlarger. > > For what it is worth! Richard > > > > > > > > > > > > > > 3 > > > > At 10:26 PM 9/1/00 EDT, you wrote: > >Hi Guys/Gals > > > >Anyone willing to share any preferences on a really nice Black > and White film > >and Developer combo. > >I've been a commercial/stock shooter for many years and have > been shooting > >almost exclusively in color.For personal work of late I'm > shooting more and > >more in B & W but I find something 'lacking',especially since > I'm using M6's > >and > >feel I'm not getting the full potential out of them. > >I'm currently using TMax 100/400 and they are being developed by pro lab > >here in Montreal-I believe they are using D-76?? > > > >SNIP > >