Navigation

Archive | gum bichromate printing

It’s been a while…

By on May 20, 2018 in darkroom work, Greece, gum bichromate printing, John D.C. Masters, John Masters, Mom, Paroikia, Paros, Photography Club of Paros, Polly Jo Masters, silver darkroom, skill and craft, spring in the Aegean, working

I haven’t blogged in a long time.  I have had so many ideas about what to say, how to say it…it has all become a jumbled mess.  I should have taken notes.  I’ll try to untangle some threads…

News from the world of photography–some of my work has been chosen to be part of the Antiparos International Photography Exhibition in July.  It is a group show of about 14-15 different photographers and I have a feeling I will be a black sheep.  Going by what has been shown in the past, there will be a lot of street photography, travel/editorial work and landscapes.  I have submitted a new portfolio of abstract digital work–more of my Found Horizons.   They are very colourful and somewhat large, so they benefit from being seen from a few meters away.  When I have an e-poster, I’ll post it in a few places for you all to see.  It is a true privilege to be a part of this event.

–I have suspended my gum bichromate work until the autumn when the temperatures and humidity drops to a manageable level.  It has become too hot to work in the darkroom these days.  By that time I hope to have some new, larger digital negatives to work with.

–My work with the Photographic Club of Paros has come to an end for the season.  I had a wonderful time with them all and they printed some good work, some of which can be seen this upcoming weekend here in Paroikia.  I am very excited to see what it all looks like matted, framed and behind glass (ok..plastic).

–After years of waiting, the collection of my mother’s newspaper articles from the little local weekly has finally been collected and made into a book.  I dare to say ‘published’ since there is no ISBN number and it is not for sale.  I have given copies away to family and friends. I am so happy this has come about.  I began the process a few years before she died and I feel it is a fitting memorial for who she was, how she thought, what she believed, how she lived.

–I am hoping to embark upon another artistic path this summer.  That’s all I can and will say about it now.  If I follow through I’ll be sure to share.

–I go through eating phases. For instance, last winter I was eating a larger ratio of quesadillas than normal.  Sometimes for lunch and dinner.  These days it is caesar salads.  I have been making my own caesar salad dressing and have confirmed that this wonderfully garlicky, tangy aoili tastes good on just about anything–except fruit.  This may seem banal, but it is the little joys in life, isn’t it? I do not make them the way the Greeks make them.  For them it is a meal with chicken, corn, bacon…yummy, but I am more of a purest.  I even skip the croutons.  Just the romaine lettuce and the dressing.  Funnily enough, both the quesadilla and the caesar salad are from Mexico.  Hmmmm…

–I am convinced that TFitWH is yearning for the Nobel Peace Prize.  He’ll try to take credit for anything good that happens in Asia or the Middle East.  He’s a corrupt shark and we all know it.  He was corrupt long before he became TFitWH.  What does this say about the moral and ethical state of America?  I know that there is outrage, political movements, protests…and that is healthy and right and I support them all.  But what about the rest?  Have the citizens been gorging themselves so long on bread and circuses that they’ve become complacent cattle led by their collective noses?  I know many who are not.  This gives me hope.

I guess that’s it for now.

–JDCM

 

 

 

A painterly photographic ancestry…

By on March 9, 2018 in 4×5 photography, beauty, craft, darkroom work, Greece, gum bichromate printing, John D.C. Masters, John Masters, Paroikia, Paros, Photography Club of Paros, skill and craft

Before digital, before silver (what we know as ‘silver gelatin’) there were ‘alternative processes.’  I find this amusing, since at the time (1840s to the mid-187os) there were no other alternatives. It is only in the digital age that we can approach photography this way.  There were several different types of processes.  You can look them up yourself.  I have chosen gum bichromate printing as my first step into this rich and varied past.

Gum bichromate printing entails mixing a potassium dichromate solution with gum arabic and watercolour pigment.  I have chosen black.   Potassium Dichromate is one of the more dangerous chemicals on the planet.  Needless to say I wear nitrile gloves, a Level 2 filter mask and safety glasses when I handle it.  I am using 4×5 negatives and I hope soon to be printing some larger digital negatives so I can make larger prints.

I made the first test strip a week or so ago.  The result is on the left.  Intervals are 15″, 30″, 45″ and 1 minute exposures under full daylight.

The problem was not the emulsion, or the paper, but me.  I wasn’t patient.  I had not allowed the paper to dry fully between each preparation stage (sizing, gesso, emulsion).  This resulted in flaking emulsion.  A common error and easily rectified.

Three days ago I began the process again.  Using 300 gsm Canson water-colour paper, I sized (soaked) this in 60C water for 30 minutes and left it to hang for 24 hours.  The next step was to make sure my gesso mix was as thin as milk, which is much thinner than one thinks.  The gesso needs to be thin so it can soak into the paper, not create a layer on top, as per a painter’s canvas.  I applied the gesso in the late afternoon and left it to dry under an exhaust fan for several hours.  Two nights ago, around 22:00hrs following the weekly Photo Club meeting, I went back into the darkroom and applied the emulsion coat after the gesso had completely dried.  I used 5ml of potassium dichromate solution to 8ml of gum arabic.  For colour I added about .5 gram of black water-colour paint (Van Gogh).  I mixed this well using a natural bristle brush and painted it onto the paper using a foam paintbrush.

Yesterday morning, after letting the emulsion-coated paper dry overnight under the exhaust fan, with a dehumidifier running and a small heater maintaining 20-21C, my paper was dry to the touch.

I used the same VW Bug 4×5 negative.  The first test strip was better.  Once again, 15″ intervals up to 1’15” under full sun at 10:00.  The result was a huge improvement in detail and resolution, although clearly not enough time.  I was on the right track.

Test strip at 15″ intervals up to 1’15”

I decided to increase the exposure time for the first proof to 1’45”.  After developing the print in three consecutive trays of 20C water for 20 minutes, this is what emerged.

1’45”, full sunlight 10:20, March 8, 2018, Paros.

Much improved!  The next time I print (tomorrow), I will expose the whole piece for the 1’45”, then burn in the top 30% for an additional 30″-45″ so the top of the hillside and the sky behind the car achieve some tone.

–JDCM