View allAll Photos Tagged selenium
Kallitype
Selenium-Toned on Arches Platine
Sodium Citrate Developer
5x5 Contact Print from Digital Negative
Nikon FE, Nikkor 28mm f/2.8 AI, yellow filter.
Ilford Delta 400 exposed at 500 EI, developed in Ilford DD-X 1+4 for 9.5 minutes @ 20 C.
Meopta Opemus 6 and Minolta CE Rokkor 50mm f/2.8 lens.
Printed on Ilford MG-IV RC Warmtone Pearl, developed in Harman Cooltone 1+9.
Harman Selenium toner 1+4 for 5 minutes.
The clamoring soldiers on the National War Memorial in Ottawa, Ontario
Original:
Plus-X Pan @ ASA-125 in Kodak Microdol-X
Print:
Ilford MGIV RC - Dektol (1+2) 1' - Selenium (1+4) 5'
A very nice example of an early Russian professional exposure meter made in 1952 at the MKIP factory in Moscow.
Selenium Light Meter, swiveling head, bakelite body. Iris diafragm to reduce strong light,
body serial # 189 .... marked EP-3 No 189. Accessory diffusor disk and honeycomb lens with matching serial numbers. Still working.
It sound better in swedish where the word "utanförskap" (exclusion) have been a political term used by all parties when speaking, in a simplified way, about people who are unemployed, sick or everybody who is not working...
Scanned papercopy
Nikon Fm3a
Nikkor 28mm f/2.8 Ai
Plus X
D76 1 1
----------------------
Adox Nuance Normal/Hard 24X30
Fujimoto G70 with Condenser head
EL-Nikkor 50mm f/2.8
Exposed for 20s at f/5.6
Developed for 5min in Ilford Mg developer
Toned in Selenium 1 10 for 1 min (?)
Photographié à / taken at Québec City.
Printed on Agfa fiber matt paper. Selenium toned (Ilford).
Developpé sur du papier fibre matt d'Agfa. Virage au sélénium (Ilford)
Older picture, going back when Nox's dark room (Quebec city) was still operational (2006)... - It was a happy time, as most photographers had already deserted film at that time. I had an unlimited access to the facility... :-)
La photo remonte à 2006 et avait été développée dans la chambre noire du club photo Nox (Québec). C'était une époque heureuse. Beaucoup de photographes avaient déjà deserté la pellicule au profit du numérique... J'avais un accès illimité à la chambre noire... :-)
The picture was slightly unsharp as it was taken through a window...
Nikon F90x
I do not remember the lens. Possibly the old Tamron 28-300 lens with a circ. pol.
Ilford Ilfosol S
Agfa fiber matt paper
Diffusion enlarger / The sky was burned.
Ilford developer
Selenium toner (Ilford)
Canon 4400F scanner
I couldn't possibly avoid owning the lovely little Trip. An excellent little camera, with four focus zones and a coupled selenium exposure meter making it quick and easy to use. Over four million were made between 1967 and 1984, and mine is one of the latter ones being made in March 1982.
A selenium meter from 1949. Made in the UK for Ilford by AVO. Very little life is left in this one.
A lot of information is on Maurice Fisher's site:
The selenium cell of this meter is part of the dial plate, the dark-gray area. The cell position design was patented by Bruno Lange. See picture 6831176332
With identical exposure and development and toning with selenium and gold, highlight details are better but in comparison with the previous one the luminosity has decreased significantly.
Adox Variotone in Eco4812 and alkaline fixer (no wash required before selenium toning)
MT1 Selenium 1+10 3 mins > wash 15 mins
MT10 Gold 4 mins > final wash 15 -20 mins
At this stage not all silver is toned, therefore it would be possible to lighten the image by a short weak bleach followed by fixing (or Farmer´s reducer). After fixing the print will come out much brighter with an intensive blue tone. Instead bleach&fix a toning of the remaining silver with a weak iron toner is an option to change colour and luminosity.
===============================
©2015 Fernando Lopez Arbarello - All Rights Reserved
FINE ART PRINTS AND PRODUCTS: www.arbarello.com/FLA-150811-ND800E-26063-bw-selenium
Westphalen exposure meter 1932, constructed of a Weston Photronic selenium cell and a Weston type 301 milliamp meter. Could be regarded as the first photoelectric exposure meter in the world without a battery. Pictured in the George Eastman House, Rochester, NY
Footed early Metraphot selenium exposure meter for Leica. This was the first model that Metrawatt produced for a Leica around 1934. Body of brown bakelite with adapted time scale for Leica on the dial plate and embossed on the outside of the body.
Another type of Samoca handheld light meter from the 1950's.
Name obtained from advert www.flickr.com/photos/amberflykezzie/5033026908/in/set-72..
Note! Same model available with silver colour panels instead of the black above.
Portsmouth, Hampshire, UK. Original photograph taken on Olympus OM4-Ti, Ilford Delta 400 35mm; Xtol 1+1. Negative scanned and enlarged via digital negative to hand coated Fabriano 5 HP paper. 8"x10" print. Selenium toned prior to fixing.
This is a close up of the front of the camera showing the Selenium cell. The simple white Yashica name is seen on blue background on the box.
Unittic Cine Meter
Selenium Cell Light meter produced by the Japanese company Showa Koden.
User manual Cover
Camera used was a Pentax K100D DSLR, lens used was a vintage, manual focus, MC, Cosina 55mm 1.2 in K Mount.
Shot in RAW, converted in Apple Aperture, then reworked in Adobe Photoshop. All work done on a MAC.
Small Bewi Piccolo selenium light meter. The dimpled on the front are the light receptors. This is the smallest meter I have ever seen
The Selenium element was known to science in the late 1800s as having the property of outputting a voltage when exposed to light, but the amout of output was so small and fleeting in its output characteristics that it made it little more than wondrous novelty to early electricity scientists and their backers of the day. Then somewhere around the late 1920s, Weston figured out how to meld this element with other others to stabilized this earliest of solar cells and make their output large enough to drive one of their most efficient meter movements of the era like the Weston 301 movement which is used on this early generation foot-candle meter modeled 614 and set out out to make a device that could be used to reliably and repeatably measure all manner of light sources and provided a handy guide for establishing lighting standards for home, work and industry. Weston originally thought about using it for automatically triggering street lighting to come on when it got dark and turn back off once the sun rose bright enough to trigger the off switch. It also got adapted into elevators to stop the doors from closing when a person broke the beam to switch the door back open. Relays, were also a going concern in Weston's affairs and they excelled in all of these various studies in electricity.
There were a handful of these models made from very compact to more industrial sized models aimed strictly at industry users. The whole craze of photography also leaped on board with this as well, as Weston helped to establish a means of scientifically setting up your camera settings based on the light in the shot. Film makers of the day as well took hold of all this new technology Weston brought to the playing field and Weston made specific meters for them as well.
From a study of the pollutants in the Los Angeles River. Each Page documents the 43 pollutants in the river. Each pollutant has its entire life cycle described, plus how we might phytoremediate and mechanically remediate the pollutant. Also included with the cultural information is the scientific signatures of each compound-how we discover them in the water. View large to read, some elements seemingly scrambled in the translation from Illustrator to Indesign to Acrobat to Photoshop to web!
I was imagining what you'd see if an early 19th century press photographer got taken back in time to the dinosaurs (except of course dinosaurs would have had skin)
T-Rex toy skeleton posed with some basil and a oil painted landscape backdrop
Photo Tim Drysdale, Printing Lachlan Young. Praktika 35mm, f/1.8 50mm, Delta100, Adox warmtone RC 12'' by 16'' paper with Selenium toning