Mostrando postagens com marcador caffenol. Mostrar todas as postagens
Mostrando postagens com marcador caffenol. Mostrar todas as postagens

segunda-feira, 23 de abril de 2012

First Caffenol Negatives - Full Developing Report

So here we are again after a couple weeks without anything great. Caffenol Carioca presents its first results: overdeveloped negatives, but alas, it's experimental after all and was indeed the first time...

Practice makes perfect.

As I said before, the idea here is to use the common household kitchen stuff to obtain a Green Developer and Fixer. Stuff that won't kill your baby, burn your skin, make you blind, intoxicate you and your dog, things you can leave around the house not caring to leave a skull sticker on to warn people they are at risk ingesting or handling it. AND THAT'S GREAT STUFF, innit!
For years what actually prevented me from developing my own negatives at home was the chemistry involved. Not-any-more.

As I told you guys my journey started with my grandad's old Rollei. Then I went online, researched, read a lot, watched videos on youtube, bought some basic stuff and made a friend. It's worth mentioning him because he was the guy who actually made sense of the "green fixer"; and although the substance involved has been well known to 'kinda fix okay' for the whole existance of Photography a quick search online will show you that the results were - in the least - less than satisfactory and short lived. Sea Salt as a fixer simply did not work and ALL THE WORLD was out there to make sure you got that or be treated as a fool to believe otherwise.
Even then, a few fools with a fixed (sorry, pun) idea in their heads would still try it. As of today, we are four people (04). And it works. Just follow the recipe I'll explain later. But this subjetc will deserve more than one post. Don't worry
BTW this friend is Henrique Souza, or by the nickname Cronocrator on Flickr, and his blog is at the address http://caffenolcolor.blogspot.com -  Please check and contribute to his work.


DEVELOPING WITH CAFFENOL:

Starting with my recipe, which turned out to be too strong I reckon now:

But first, nomenclature:
tsp = teaspoon (circa 5g / ml)
tbs = tablespoon (3 tsp)

MEASURES:

The developing thank volume is of about 500ml. Less actually. You can't fit 500ml. Consider your proportions accordingly, ok. But most important of all, even if you don't have exactly what the other guys have been using, it's ok as long as you use the same measures for all you work. In a different way to put it, if ou can't measure in ml do in ounces, or liters but then ALWAYS stick to the same measures so you WON'T mix different scales. I bought a general kitchen measuring beaker and will do the whole process using it. Simple as that.

RECIPE:


2 tbs of cheap (caffenated!!!) instant coffee
4 tsp of washing soda
2 Vit-C Redoxon 1000mg tablets

STEPs:

1] dissolved the coffee and the soda in different recipients. MIND the 500ml maximum volume of your tank (your tank might take more than that so just find out how much it takes before you start the process - add water to it and measure how much it took):

-          Add 250ml to a container then add the 2 tbs of coffee. Mix until it all dissolves.
-          Add 200ml and the 4tsp of Soda to another recipient or in the measuring beaker/cup itself. You don't need a hundred plastic pots to do this. Two will do just fine. Mix and break any hard crystals. It should dilute 100% . It will look like regular water (yep, don't get confuse and drink it....)
-          Add to Redoxon and allow it to completely dilute. Make sure it does!


2]         Mix all three together and make sure to mix well.
3]          Add the mixture inside your tank (preferably with the film already in the reel inside, a' course!)

You don't have to do this in the dark. Actually, after doing the film-reel-tank hedious game all the developing process takes place in the light. Watch tv!

DEV TIME:

I did 20 min. MISTAKE. The recipe is too strong. I suppose 7 to 12 min tops will bring better results.
Overdeveloping make the negatives DENSE - that is, too DARK. You'll see in my results what does that mean.
Try and get the temperature around 20 degrees Celsius. Too warm and it overdevelops too. I did it at about 30 C.... And easy way to do it is to use some cooled water to do the mixin.
Attention: add the cool water after you mixed the soda. I found out that the soda in cool water becomes big rocks too hard to dilute!! I ha to add hot water to dissolve it.


           The caffenol mixture must be used within 30min's time. 


CAVEAT: The Vit-C tablets are messy. They foam up and make a good froth. Just like draught beer but not as tasty! By messy I really mean messy, spilling black smudge all over. So be sure to add those two in the recipient with the highest side you have. I was told that adding soda to it cancelled the spilling over....never tried. Vit-C reduces the time of development by a half and reduces fog and stains. But the tablets are not 100% pure Vit-C and then you have a few issues form its use....

As I said, this recipe works fine but is rather strong. I'm presenting what I've done here, but my next batch will suffer adjustments such as: no more Redoxon (Cronocrator's tip), 1 tbs + 1 tsp Coffee and 4 tbs of soda. Do at your own risk or simple go online and try one of the bomb-proof recipes the guys post online at Caffenol.org

I'm all about experimenting. Besides, my film is not the same as theirs!


--------------------
PROCESSING THE FILM - IN PICTURES

Time to add some photos, as promissed.

First, a gentle advice given me by Cronocrator. Wash you film before starting. Add cool water from the tap to the tank, put it down the drain. Repeat. It gets the negatives moisturised before starting the developing process preventing the developer to stain the film and washing away the die from the film (purple or blue die, depending on the film maker)

I usually prepare the Salt Fixer before (since the caffenol is only good for 30min!) But that is a new post......

Kitchen measuring beaker with about 500ml water:


2 Coffee tbs and Redoxon before adding to coffee mix (illustration of the tablets):



Adding 250ml water to coffee and the Vit-C later: 250ml
Just placed  the 250mln water in the coffee cup then vit-c,

Result of using a short cup for the Vit-C mix....Mistake made once only! It was worse than the picture shows...
Should have used the measure cup and not the short cup...

Mixing the Soda to have the complete Caffenol mix. I did both mixtures before adding water to them. Adding water was the last part, except for the Vit-C which was added to the coffee-water mix already done:

Water for the soda mix: 200ml


4 tsp of soda


Mixing soda and water:

Mixing all together now - coffe + vit-c & Soda: you don't need the funel!

Final solution of CAFFENOL ready to use (oh yeah, it's caffenol done there!):



NEXT Step, adding the Caffenol-C mix to the Developing Tank:

amount left in the measure cup (tank fits only less that the full 500ml)


DEVELOPING Time and Do's:

Nice. Once you have added your Caffenol to your tank the process takes from 7 to 15 min depending on your recipe and if you have Vit-C. Solutions without Vit-C take longer, like 30min. You'll have to gently shake the tank, mix the caffenol inside it so the developing solution affects the whole of the film, leaving no imperfections or stains.
If you shake too much or too hard you'll get too much GRAIN and overdevelop. So you will move the tank gently every 30 sec. for the first 5 min or so. Just turn it one side to the other, up and down around its axis. This is called semi-stand. Then let it do it's trick. Wait a few minutes and turn a bit more. If you turn too much you'll get a lot of grain.

Drop the caffenol down the sink and begin the stop and washing bath:

change the water a few times to make sure you washed it really well and no caffenol is still on the film

Last thing: wash the negs still in the tank with a bit of dishwashing soap.....it prevents water stains to build on your nice negs!

DONE. Now you have to FIX your negatives if you want them to survive light.


Now a few scanned pictures of the results.

I had a really difficult time using a (two different ones actually) table scanner so I decided to try something I saw on youtube - using my digital camera to 'scan' the negatives. It works.
I jerrybuilt a system far from perfect but as you'll see I am now able to show the resulting negs and somewhat correct them on the PC.
You'll need:
- digicam with manual focus or able to focus from very close distance (macro mode)
- lamp
- one completely white sheet of paper or glass/plastic (much better than paper actually, I'll get one myself)
- a tripod is great if you have one.

The results came out fairly crooked because I shot the cam at an angle (the camera wasn't at 90º angle to the neg, but rather about 60º. That said, my scans lost quality and....the light wasn't even onto all parts of the neg. Still, I'm happy to have SOME results to show. It's all about home-made, green, experimental Caffenol, right!?

Poor man's scanning system: Get a side table lamp (white light is better than yellow), place the sheet of paper onto it (won't start a fire, ok), place the negative onto the white sheet of paper (you might need to cut the negs separately) then focus your camera and take a pic. Bob's our uncle.


I shall first show the negatives the way they came out of the camera (duely cropped out of the frame sheet-of-paper-lamp, then I'll show some quick fixes obtained on GIMP:
Camera used - Canon S5 IS 8MP










As you can see the edges (numbers and ID of the film) are well fixed and look good - proving the negs were indeed developed correctly - in short, the developing process worked as it should!

Now the tweaked negs in GIMP: Invert + Dessaturate. Don't know if the order matter though...
I used the shadow brush on a few.









HAVE QUESTIONS? WANT TO SHARE INFO? Write me.

Cheers!

quarta-feira, 4 de abril de 2012

Turning Baking Soda into Washing Soda with a frying pan ... (First attempt ever)

Yep....the title tells it all. But since this is my first-ever blog, blog post and subject I reckon I should add some history for starters....

I love photography and am a geek, so one can imagine I have a serious interest in lens math, techy details and so on. Digital was not enough because it's too easy, too perfect and comfortable so I had to try out something harder. My grandad's Rollei, 60yrs old 120mm in great shape. After a few go's it stopped working. Why not, right....I'm not the luckiest bean on the can so I took it to the repair shop and, when it came back, one word: WOW. Loved it. It's perfect, works great. It was almost mint for a 60y old bird but now....
So here I am. Shooting with my granpa's camera has a special sensation to it, being the 3rd generation shooter.

Next step buying some film. Next over....problem....what the hell how am I going to develop this crap!?!
Days on the net looking for options the final answer came to me as a bonus. Doing it myself, at home.
Challenges: lots of chemicals. I don't like chemicals....big problem but cutting short I came 'round Caffenot and suddenly my problems seemed to disappear. Or did they.... The first big issue (second if compared to the frigging fixer but let's forget about that bastard for now, shall we) was the blooming sodium carbonate.
Let me explain you something. I live in RIO DE JANEIRO, BRAZIL (yep, samba, beach, Christ the Redeemer, pagode, funk, pickpockets, favelas and so on) and apparently, for such disorganised place chemicals are quite well regulated and hard to find.... (do you remember I hate chemicals....something to do with flunking Chemistry perhaps.) and then I can't get washing soda and thiosulfate that easily. Drastic measures were needed, I had to find a way around it. And quick...I was shooting my third roll of film already and the fourth and last was soon to be called upon.

Looong post, introdution lets go to what really matters.
I shall be registering here my steps attempting Caffenol, entirely green and home made developer, and also, substitutes for fixers. Soon to come but already onto it!

TODAY, first day at all.

Got home with 100g of pure baking soda (sodium bicarbonate), placed 1 tsp on a frying pan and tried to turn it into sodium carbonate, this nasty blite that one can't do without for Caffenol. People really try and scare you off using baking soda instead, saying you'll lose your negs (and get forever cursed) if you do it (baking soda). The internet (flickr) was particularly helpful to provide info about this. So check this link if you're just starting: http://www.flickr.com/groups/33051635@N00/discuss/72157623206385484/#comment72157629741968069

I allowed it to fry for a couple minutes to do the test. Apparently you should see kind of volcanos erupting, plus a bad smell. Remember, baking soda + heat = washing soda + CO2 (Stop bitching I told you I flunked Chem...)
Safe. No explosion. You can also try it at home! Smells bad but nothing horrible.
The test consists of rubbing some of the aftermath with water in your fingers. It should be very soapy now if it is sodium carbonate (washing soda), just like soap. So I did it and then compared to water + baking soda. There was a BIG difference. Bingo! I hope.

Ending here. Long post... Next step making a bigger batch of washing soda.