Showing posts with label caffenol. Show all posts
Showing posts with label caffenol. Show all posts

Tuesday, August 18, 2015

Eucalyptol

One or both of my readers (hi mom) may be familiar with the b/w film developer Caffenol. This is made with instant coffee, washing soda and vitamin C powder. It is environmentally friendly, cheap, high quality, easy and cheap. Alright, I am cheap and Rodinal might be a little cheaper than Caffenol, but there is just something very cool about mixing household ingredients and getting film developer out of it. So I occasionally mix up a batch when I have time. There are examples around here.

Recently, there was a discussion of the active ingredient. It turns out NOT to be caffeine, but caffeic acid. So that begs the question (for me): What else has caffeic acid in it that might be readily available? The answer: The bark of Eucalyptus globulus (according to Wikipedia). This is an Australian native tree that happens to be a common invasive species in So. Cal. where I live. In fact, there are big ones just outside my front door. So it is very simple for me to step outside and collect some bark off the ground, and that's just what I did. I didn't weigh it or anything, this was more of a 'proof of concept' experiment than an optimization. So the best I could say about the quantity used would be 'a couple of handfuls'. I took it inside and broke it into little pieces, then I put those into my coffee grinder. Legal Disclaimer: Do not use anything you plan to later use for food prep when preparing photographic chemistry. I ground it up pretty fine and put it into a pint mason jar. Then I poured boiling water in and let it steep for about 30 minutes. I then poured the liquid through a coffee filter and discarded the used bark. I have absolutely no idea how much caffeic acid is in this tea (if any). I subsequently did some Google Scholar research and found a paper where the researchers could not detect caffeic acid in the bark of Eucalyptus globulus. That was discouraging, but I had come this far, so I decided to at least do a drop test on a piece of film.

To do a drop test, just get an old piece of film, expose it to the light and put a drop of your developer on it. If it turns black, your developer is active, if not, then it isn't. I had a little over 500mL of eucalyptus tea, so I followed the recipe for Caffenol C-L, adding 16g of Washing Soda and 10g of Vit. C. I didn't add any KBr. Then I topped off to 1L with distilled H2O. The film that needed to be developed was Kadak Recordak Dacomatic. This is copy film with a very thin emulsion layer and no anti-halation layer, so probably would be my best bet if the developer ended up being weak. So I cut the leader from one of my rolls and put a drop of the developer (heretofore known as Eucalyptol) on the emulsion. One minute later... nothing. Give it a little shake. Then it happened. The emulsion started to turn. First just a faint brown, then darker and darker. It was working! I swirled the drop of developer onto a different area of the film and there it sat. Maybe there was a little development, but not much. So there it was. A one-shot developer.

Now to decide on a developing time. I figured I would do a stand development, but I didn't want the bromide drag that comes with it on 35mm film. So I decided 1 hour semi-stand with inversions at 20, and 40 minutes. That way, if the dev was weak, at least I might get thin but scanable negs.

Here are some of the results:

N2020-Dacomatic-004 N2020-Dacomatic-003 N2020-Dacomatic-021 N2020-Dacomatic-018 N2020-Dacomatic-014

Okay, HCB I am not, but you get the idea. The tonal scale is compressed (more contrast), though part of that is attributable to the fact that I was shooting mostly in full sun, mid-day at the freakin' beach. You won't find many more contrasty scenes than that. Also the film itself is intended for copying documents, so contrast is sort of its thing. Normally, I develop this film in Adonal (Rodinal) 1:100 for 70min with inversion initially and at 30 min. That gives a pronounced grain that I find appealing. It's not for everyone, especially those who enjoy the digital aesthetic, but I like the grain. With this developer, I am going to call the grain "chunky style", but still not so obtrusive as to be distracting. Additionally, while I was doing some light dust spotting in Photoshop, I did notice some very very small pinholes in the emulsion. These appear as tiny black dots on the scan. My intuition tells me that there could be something in the eucalyptus extract that is being hard on the thin emulsion layer of this film. I am doubtful that I would see it with a regular pictorial photographic film (stay tuned).

Over all, I think this is a good alternative to caffenol for those of us who want to see just how far down we can drive the cost of developing a roll of film in a home-made developer. Here's the math. I used about $0.10 worth of washing soda, about $0.76 worth of vit. C powder, and maybe a nickel's worth of distilled water. So that's around $0.90 in ingredients, not counting the film which was practically free (I think I paid about $0.03/ft). To compare, the same amount of Adonal 1:100 would cost about $0.14. So this isn't really a money saving proposition, especially if you consider the time spent collecting, grinding, steeping and weighing. It is more about the adventure of making something that works. It is closely related to the "maker" movement you see in places like the Maker Faire and Make magazine. It lets us explore our creativity while still engaging our left-brained nature.

Monday, June 9, 2014

Balboa Park

I took a break from camera repair one weekend to take my oldest son to the High School Student Shakespeare Festival here in San Diego at Balboa Park. Of course most of my time was spent watching young people perform scenes and monologues, but there was a bit of down time in between things and then waiting for winners to be announced. So I took the opportunity to use the Yashica Electro 35 GSN I had loaded up with Expired (2011) Neopan SS. There are probably more opportunities for 'street' photography there in the park than you could shake a rangefinder at, but I'm not much for photographing people. I know, I know... I'm working on it, but very slowly. So while avoiding the crowds, I took a few shots of some of the amazing architecture we have in this 100 year old park.

This is 'the Prado'


This is the Botanical Building and reflecting pool. I have some thoughts on the composition of this photo that I might share in another post.


A detail of this Botanical Building dome.


Here is another common sight at Balboa Park. Many artists comer here and paint, photograph, draw, dance, make music, perform, etc. So aside from the 17 museums, 9 performing arts venues, 19 gardens, and so much more, there are sidewalk artists everywhere to just enjoy.

I hope that if you are ever in Southern California that you will stop by Balboa Park and see why San Diegans love it so much.

Tech Notes:

  • Film was exposed at EI 100 on a bright sunny day
  • Development was done in Caffenol-CL, standing for 70min
  • Epson V600 scanner
  • Dust spotting in PS CS5.5

Wednesday, April 16, 2014

Dacomatic Recordak Film

I have been playing around with expired film recently. This is for a couple of reasons. First, it is economical and I am cheap. ;) Second, and more importantly, I like the look of grainy film. I wouldn't say that I am in the "more grain is better ad infinitum" camp, but I like photos with pronounced grain. In fact, back when I was shooting digital, I would often use grain 'filters' or plug-ins for my photos that needed that extra something. Looking back now, I am surprised that it took me so long to return to film photography, when that is what I wanted my photos to look like all along. As film ages, the ionic silver undergoes subtle chemical changes. The crystals merge and aggregate, cosmic rays and other radiation can 'expose' some crystals, etc. So the net effect is that the film speed (iso rating) gets lower, the grain gets bigger and the base fog becomes more noticeable. Some of this can be overcome when you develop your film if you are trying to get a 'cleaner' look from your expired film. I use one of two developers (Rodinal or Caffenol-CL), neither of which is very good at compensating for these side effects of elderly film. So I shoot the film and live with what I get, which is usually pretty close if not exactly the look I am going for.

Recently, I acquired a 400 foot roll of some well-expired 35mm film. It is Kodak Dacomatic A film, expired in Dec. 1973. I was only 6 years old when this expired!! I bought it on the big auction site and then started trying to figure out what iso it should be shot at and how in the world to develop it. Guess what, there's not much information out there on this film. From what I can gather it was made for use in the Kodak Recordak machine which was used for copying documents. Okay, so it's copy film. That will mean that it is probably high contrast, or at least it was in 1973. I did find one guy on Flickr that had used it and shot it at iso 6. Over on the FilmWasters forum (highly recommended) one of the guys wrote a desktop application that will calculate a reasonably accurate EI for expired film. You can download it HERE. Download those three files and run setup.exe. This application predicts an iso of 6 for film that was originally iso 100. Was that the original speed?? Who knows? Never being one for following rules, or even guidelines, I set my meter to iso 12 just to allow a little more reasonable shutter speeds. I should note that subsequently, another Filmwaster has exposed this same film at iso 80 and got very good results using Blufire HR developer from the Frugal Photographer. Anyway, I rolled some up in a reusable film canister. I had to do this in the dark since my daylight film loader will not hold a 400' roll. So I measured a piece of string as long as a 12-exposure roll of film and taped it to the counter in my darkroom (bathroom). Then I turned out the lights and measured out a piece of film as long as the string. I then taped that to the film spool and rolled it up. I threw this into my trusty old Nikkormat FTn and went out in the sun to find something to shoot. I found myself at The Scripps UCSD Medical Center where they have sculptures and fountains and buildings that might be photogenic.



Here are a couple of shots I took of a marble sculpture of a pair of robed figures looking at each other.

I developed in Caffenol-CL for 60min with no agitation after the first 30sec. You can see that the grain is 'pronounced', but not what I would call 'extreme' or distracting. This is the look I like and why I like to use expired film. Different films age in different ways and storage conditions play a big part in whether they are usable or not. If you are buying very old film (more than 5yrs past expiration) you probably want to verify with the seller that it was in cold storage. You may get an image out of film stored in a closet, but it will be pretty faint. Just experiment and have fun with these old stocks!

Monday, November 11, 2013

JamesWatson

James Waston (co-discoverer of the double helix structure of DNA) came to the company where I work to give a talk about this great scientific discovery. I never read The Double Helix, nor did I really know much about the discovery aside from the names Watson and Crick. He talked for a while about the science and the personalities involved, which was kind of interesting. Then he started sprinkling in personal remarks about some of the other scientists. Not nice or complimentary things, but derogatory things, insulting things, downright mean things. In fact the only scientist he didn't have some disdain for was himself, to whom he directed many very complimentary remarks. At one point or another, he must have insulted everyone in the room of about 150 people. Now I am enough of a realist to know that not everyone is 'personable', especially among the smart sectors of humanity, and he was mostly insulting dead people. But here is when things turned the corner for me. He just finished an attack directed against Republicans and finished by saying rhetorically , "Why should you bother with such hateful people?" Okay, fine. He doesn't like hateful people and is making a wild generalization about Republicans. Whatever. But then in the next 10 minutes he went on to name two or three groups of people he "hates". Yes, he used that word, "hate". So opinions about women, conservatives, vegans, biologists and 'dumb' people aside, he is just logically inconsistent. According to him, we should pay no attention to him because he is a hateful person. I expected more from James Watson.

After the partly shocking, partly disappointing talk he gave, people were lined up out the door and down the hallway to have him sign a book or a paper and get a picture with this bigoted elder statesman. Needless to say, I passed on the signature and the photo-op. I did snap a couple of photos of him just with this blog entry in mind.

I am sorry for James Watson. He obviously has (or had) a brilliant scientific mind. It is sad that it was not coupled with a more kind, compassionate and forgiving spirit.

James Watson

Monday, September 23, 2013

Pushing Through IX

This is a little bit of a departure from the theme of the first 8 in this series, but I think that it is well within the overall theme of plants defying man's attempts to control them. In this case, the landscapers have pruned back a branch on a tree. The tree's response? Re-grow that branch of course (sprouting from the lower left of the scar). After all it was there for a reason.
I took this photo with my '39 Voigtländer Bessa 6x9. I had it loaded with one of my favorite films, Fuji Neopan Acros 100. I also was holding a deep yellow filter in front of the lens (there is no way to mount a filter on the front of this lens). I think the filter helped with contrast and with distinguishing the sky and clouds in the background.
See the rest of this series HERE. Pushing Through IX

Saturday, August 31, 2013

Pushing Through VIII

A drainage ditch is something I had never see until I moved to San Diego. I lived in Pacific Beach for the first year and there is a large drainage ditch running through that neighborhood. In fact I drove over it every time I went to or from work. It was like a bog with very tall grasses growing there. The problem with that is that it also smells like a bog and in the summer I would drive through there with my windows open and I would pass through this massive stinking cloud of choking sulfurous stench. It was (and probably still is) a nasty little feature of the city landscape. Once we moved 5 miles east to Mira Mesa, it was quite a bit dryer. The drainage ditches here are much smaller, but they do collect debris which eventually makes a deep enough bed of substrate for something to grow it. It is another example of nature finding a way around man's design. In this case a big clump of grass has found a home.
Check out the rest of the series if you have a minute.

Pushing Through VIII

Sunday, August 25, 2013

Pushing Through VII

See Pushing Through for an explanation of the series.
Pushing-Through-VII

Pushing Through VI

See Pushing Through for an explanation of the series.
Pushing-Through-VI

Pushing Through V

See Pushing Through for an explanation of the series.
Pushing-Through-V

Pushing Through IV

See Pushing Through for an explanation of the series.
Pushing-Through-IV

Pushing Through III

At first glance, this looks pretty common. It's just a plant growing up through a gap in the sidewalk. But if you look a little closer, you'll see what attracted me to this particular one. First, behind the plant you can see that "they" have tried to seal up the gap with asphalt. This plant is growing in defiance of not only the sidewalk itself, but the added effort to keep nature at bay. The next thing to notice is that in fact the entire section of the concrete sidewalk is being pushed up from beneath. This is probably caused by a tree root. The roots push up and crack the concrete, then seeds get blown in and there they start to grow. I often try to imagine what things will look like in 200 years. Will man have truly mastered his environment so that his walkways are no longer damaged and 'littered' with these interlopers? Or will the plants continue to struggle and push through the concrete, reminding us that we are the intruders here? We are the ones struggling against nature. We are fighting on the side destined for failure. I want to think that we can come to some form of a 'truce' where man can allow more nature into his urban environment.

Pushing-Through-III
I took this photo with my Yashica Mat 124G, using Kodak T-Max 100 film. Development was in Caffenol-CL with 70min stand development. Scanned with an Epson Perfection V600. See Pushing Through for an explanation of the series.

Sunday, August 4, 2013

Cousins

I didn't really have cousins growing up. I have one cousin that I didn't meet until I was 15 or so and then only saw him a couple of times. I had loads of second cousins, but only saw them on rare occasions. Unfortunately, my kids are in a similar boat. They have cousins, but they all live in different places around the country, so they don't see each other much. The wonderful phenomenon about young people is that they pick up right where they left off like it was yesterday. We recently had an opportunity to get one whole side of the family together. The cousins all jumped right in to playing and harassing each other like, well... like family. It is a lesson we all could learn, not to hold petty grievances and hurts from years past, but just to love and enjoy one another like kids do... like cousins do. Cousins
I took this photo with my Graflex Speed Graphic 4x5. This is the first photo I took with this hand-held as opposed to using a tripod. It is heavy and sort of unwieldy, but I had the light metered already and the shutter and aperture were all set. I just had to focus and shoot. I used the built-in range finder, lined up the two images and "click". It is kind of hard to go unnoticed with a monster like the Speed Graphic in front of your face, but in this case only one of my victims er... subjects noticed and looked over. The others were busy being kids, so I got a pretty candid shot of them being themselves. I didn't take enough care sealing up my darkroom (bathroom) when I unloaded the film holders, so it looks like there was a bit of a light leak in the lower corner. I did a little dodging in Photoshop, so it's not quite as noticeable. I will probably crop it out if I decide to print it. That is one of the beautiful things about large format. There are plenty of pixels for cropping before printing. The development was done in Caffenol-CL for 70 minutes. I like the look of Caffenol-CL with a number of different films. Being fairly inexpensive and environmentally friendly makes up for the hassle of weighing and mixing ingredients. I hope you enjoy this photo. Maybe it reminds you of summers with your cousins.