domingo, 26 de abril de 2015

Worldwide Pinhole Photographic Day

I am ill I couldn't go out for Pinhole today.

The site of the event is here

I choosed an old Pinhole photo to show today, took on film, maybe 1/2 second, open and close.

quinta-feira, 23 de abril de 2015

Split C-41 developer at room temperature

Since a while I have been using Dignan's 2-bath C-41 developer. The color restitution depends more on the second bath, so I have been experimenting different solutions, and these are the results for a 5% solution of Potassium Carbonate anhydrous with 4g/liter of Sodium Chloride, table salt. The film I used was Fuji Superia 100, expired in 2002.

It is said that time is not a problem with this developer, but according to my tests better too long than too short. So I propose 15 minutes for the first bath of CD4 and 30 minutes for the second. All at room temperature.

Still I need to improve the graininess overexposing the film and bleaching/fixing well to remove all silver salts  and silver from the film.

quarta-feira, 15 de abril de 2015

Animation GIF


Sensitive epileptic people should CLOSE immediately this BLOG! This kind of animation may trigger an epileptic attack.

This kind of animation may be automatically produced with adequate software or via HTML programming. I used Stereo Photomaker 64, a freeware that may be found in internet. To make this, I used three versions of one photo, in one of them I cut a little at the borders to look closer. The image presents thus 3 pics in sequence, the original, the negative of the original and the original that was cut. The time duration of each pic is measured in miliseconds, 20 ms for original and closer image but just 1 ms for the negative one.

quarta-feira, 1 de abril de 2015

3 Great Free Software Programs to treat your photos.

I have been looking for free software to treat my photos. The first I discovered was GIMP, The GNU Image Manipulation Program. I am still using it and there are additional plugins that may be added to the program, it is very good indeed but not for beginners.

Then, because I found GIMP very difficult to learn well and heavy for my small PC memory, still working with Windows XP, I searched for a good free and fast program and I came then by chance to Photoscape that has the essential tools to enhance the quality of scanned film pictures.

One of my challenges is to transform a Black and White picture into color picture. This is possible with Photoscape with the tool Paint Brush holding the shift key down. But if you go a second time with the tool over an already zone the color changes to more dark and this may cause you waste of time to correct an accidental double brushing.

By chance I discovered this tool on line that only do that, colorize pictures. Very easy to use and efficient. It is called Colorize Photo and works online.

Bellow is a B&W picture I took with my RTB (round tin box) a pinhole camera I made recently. I used Ilford MG IV, f/200, some 10 seconds exposure. Developer was a home made Parodinal in dilution 1:5. And bellow it is a colorized picture I made with GIMP, using the tool Renderize-Fog with several colors and opacity. You don't control how the spots will be spread over the picture but choosing the right colors and their opacity, it is possible to get a more or less colorized artistic effect.

Brightness and contrast adjusstments in Photoscape

Above picture colorized with GIMP

Let us take now another B&W picture and see what one may have using both the online Colorize Photo and GIMP to spread some random spots to mask possible imperfections of my ability in using hand driven mouse to colorize the picture. The photo was taken with an Olympus Trip 35, a wonderful small 35 mm camera and using long expired film Kodak TMax 400 in a cloudy Spring day and developed with a coffee-Vit C-phenidone made after a Flickr friend, Jay De Fehr's, finding that phenidone is super additive with coffee and not only with Vit C, this is used in Kodak's XTol developer for quite a long time.

Olympus Trip 35 - TMax 400 - Caphenol
Using "Colorized Photo" and GIMP

quinta-feira, 26 de março de 2015

Pinhole Photography

I was invited to organize and hold a workshop on Pinhole Photography and I have been preparing myself on this. I first transformed a tin box with about 10 cm diameter in a pinhole camera. That was very easy, the only difficulty is to make the appropriate hole that is said to be optimized for 0,446 mm. I searched in my needle box for a needle or pin with a convenient diameter and found 0,5 mm.
But the metal of the round tin box is thick what will restrict very much the image circle. So I made a larger hole, 4mm diameter, and glued over this hole and inside the box a thin film of acetate with aluminium tape and then perforated this film and aluminium adhesive together with the 0,5 mm pin at the middle of the 4 mm hole.

First version of my pinhole camera
After this was done, I tested the camera with VC Ilford Paper MG IV developed in a home brewed Parodinal developer in dilution 1:5. Not bad...

Pinhole photo inverted with Photoscape
After this succeeded test of the RTB (Round Tin Box) I decided to upgrade the camera with the possibility of using 52 mm filters in order to control better the contrast. I prepared a ring of a PVC tube with 50 mm diameter in order to fit the cylindrical surface of the box and glued it with epoxy around the larger hole. Finally, again with epoxy, I glued a 43-52 step-up adapter to the PVC. And this was the result. An additional vantage is to use a 52 mm cap as shutter.

Upgrading my pinhole camera
New test with low contrast, green filter:

To be continued...

domingo, 22 de fevereiro de 2015

Surge marks

Always learning something new. I have been getting these terrible surge marks on my B&W pictures. Regardless of how and how much I agitate or with pre-soak and without it, the demons appeared in the pictures. So, I tried to get help at Flickr, asking wheather there is a working recipe to avoid these marks.

Among the answers, I tried to follow the advice of one of them, coming from Larry D., a long acquaintance at Flickr. He insisted with me to refix the negatives and see. I did it and the surge marks were gone. The lower pic has the marks on the top side and the upper one is the result of refixing/washing.

Well, I learned that rapid fixer is not that rapid, it needs about 5 minutes to clear completely, at least with the film I have been using, Polypan F, and so, the fixing time should be 10 minutes using the rule of doubling the clear time.

My thanks to Larry D.!

quarta-feira, 18 de fevereiro de 2015

Winter pause

I know it is possible to take good pictures in Winter. Nevertheless my routine is somehow broken by the weather unpredictable changes. Most of the time it has been cloudy and pictures need sun and contrast. Sometimes it rains and it is also cloudy of course. When the sun shines the sky is completely clear, no clouds at all, like today. I like photos with some clouds, an empty sky is boring. But with such good weather yesterday and today I had to go out and take some pictures. Yesterday I choosed an Olympus Pen EE-2 and took color pictures, using a Fuji Superia 100 ISO exposed at 50 ISO. The film was developed in the 2-bath C-41 process of Dignan.

This Olympus Pen EE-2 is not that sharp, but is OK.

Today, I choosed another camera, a Konica Big Mini. I read somewhere that it has excellent lens. Using this time the rest of my Polypan F 50 ISO, exposed at 100 ISO and developed in a Caffenol developer with Vit. C and Phenidone, I took some pictures without clouds.

The empty sky doesn't look so naked because I cut it from the scene.

I like the photos made with the Konica Big Mini. It is incredible how good this P&S cameras can be. Next time I will be using a Pentax P&S, also very good and with zoom. The 3.rd Konica picture above was cutted to the center, This is similar to the so called digital zoom of the digital cameras.