View allAll Photos Tagged selenium
With incident-light diffuser half in place. The diffuser stores in a small pocket inside the case.
A match-needle selenium device, c.1962.
(That's the end of Light Meter Week chez Awcam).
A color temperature meter with scales for color filter correction. Production started in 1957 with the white model, followed by the black and later the grey models.
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
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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 (?)
Minolta Autopak 500 ~1966
Rokkor 1:2.8 f38mm
Shutter speeds 1/90, 1/40 in flash mode.
Double stroke film advance.
Zone focus by means of metal knob on the camera side.
Selenium meter controls the exposure aperture or the auto flash mode, if a flash cube is present. The aperture is coupled to the focus zone in flash mode.
Uses 126 film cassettes.
A simple look but loaded of features.
Seattle Skyline as viewed from North Lake Union at Gasworks Park. Kodak Tri-X 400 film, tripod. Neg finalized in Selenium toner. This shot got me cash, and lots of web hits. 2003 I think.
(more informative links in comments below)
Remember, if your camera comes with selenium light meter like the Olympus Trip 35 (think Agfa Optima or Silette, certain Voigtlanders, Werras) they need to be kept in the dark or it will exhaust the cell.
Never buy one on display in a bright counter without a lens cap. The meter will most likely be on its last legs.
The camera won the 1968 Good Design award.
The Olympus write up on the camera goes:
The Olympus TRIP 35 is a full-sized compact EE camera based on the Pen EES. It first went on sale in 1968. The name reflects its suitability as a convenient camera to take on trips. The TRIP 35 became very popular as a camera that combined ease of use, reliability and a low price with superb photographic performance. It remained a best-seller for many years, and over the next 20 years over 10 million were produced.
Nikon F90X. Película Argenti Pan-X 100 Iso (Similar a Agfa APX-100) Revelador Gago StacP2 1+9 25ºC.5 minutos. Papel Foma Fomatone 131. Revelador Gago ToqueGrafic+ Softonate. Virado al selenio-sulfuro. 18x24 cm.Selenium-sulphide toned.
Combarro, Poio, Pontevedra. Agosto 2008.
Selenium in sandstone from New Mexico, USA. (SDSMT 3909, South Dakota School of Mines and Technology Museum of Geology, Rapid City, South Dakota, USA)
A mineral is a naturally-occurring, solid, inorganic, crystalline substance having a fairly definite chemical composition and having fairly definite physical properties. At its simplest, a mineral is a naturally-occurring solid chemical. Currently, there are over 4900 named and described minerals - about 200 of them are common and about 20 of them are very common. Mineral classification is based on anion chemistry. Major categories of minerals are: elements, sulfides, oxides, halides, carbonates, sulfates, phosphates, and silicates.
Elements are fundamental substances of matter - matter that is composed of the same types of atoms. At present, 118 elements are known (four of them are still unnamed). Of these, 98 occur naturally on Earth (hydrogen to californium). Most of these occur in rocks & minerals, although some occur in very small, trace amounts. Only some elements occur in their native elemental state as minerals.
To find a native element in nature, it must be relatively non-reactive and there must be some concentration process. Metallic, semimetallic (metalloid), and nonmetallic elements are known in their native state.
The rock shown above is from a "roll front deposit", in which native selenium occurs along a redox front in fluvial sandstone (see Granger & Santos, 1982).
Stratigraphy & age of host rock: fluvial sandstone, Westwater Canyon Member, Morrison Formation, Upper Jurassic
Locality; Section 23 Mine, Ambrosia Lake Mining District, north of Grants, New Mexico, USA
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Reference cited:
Granger & Santos (1982) - Geology and ore deposits of the Section 23 Mine, Ambrosia Lake District, New Mexico. United States Geological Survey Open-File Report 82-207. 70 pp.
Cemetery next to a green church somewhere in the Western Fjords of Iceland
Hasselblad with 150mm+tubes, Acros film, printed on Ilford MGWT plus selenium
String Lake @ Grand Tetons National Park.
Canon 50D w/Tamron 18-270mm @ f/10; 1/40; iso-400; 130mm . Selenium-Sepia Toned via Topaz Labs B/W effects.
My grandparents' old GM Model B Standard Exposure Meter. It's got a slide rule on the back for you to determine your f-stop/shutter speed. I learned from a friend today that this is, in fact, powered by Selenium! And it still works!
Note: Another neat fact: This is from around the 40s! And you can get one for, like, $20!
A cute little Russian oddity, complete with Cyrilic text. I believe this was released in around 1983, though my case is marked 1992. This would have been outdated technology when it was released in 1983. That's the Soviet Union for you...
As Murray Walker once said "It's raining and the track is wet" - It's raining today and the shed is wet, as would I be if I'd left the house. I have a man cold, as such, I wish to just mooch around feeling glum, for a change.
To brighten the day my father found some mid 20th century exposure meters, these are Selenium powered and as such require no batteries, hoorah. This CP Prixcolor has a flip over incident cover. Film speed from 12 up to 3200 ASA (ISO), shutter speeds from 1 to 1/1000th and was made in West Germany in 1977.
He found the instruction book later on ^_^
slavich bromportrait 80 grade 3, selenium 1+1+9,
arista premium liquid lith 1+1+24+old brown, bessa r2a, yellow-green #11
hc-110, neopan ss ei200, heliar classic 50/2.
Kodak Retina automatic II ~1962
Scheneider Kreuznach Retina Xenar 45mm 1:2.8
Compur shutter 1/30-500 and B
Scale focus. Chosen distance is displayed on the viewfinder
Manual or auto exposure, shutter speed priority, using a coupled selenium light meter
Using the auto exposure mode, if the light conditions are out of the range, the word stop is displayed on the viewfinder and the shutter released blocked.
135 film
Some shots taken with it
Monica Denevan, "Braiding, Burma," 2006, from the series "Songs of the River: Portraits from Burma;" selenium toned gelatin silver print, 10 x 10." Edition of 20.
Yashica FX-3 Super 2000. Ilford multigrade IV RC Deluxe. Warmtone developer, slightly selenium toned.
A selenium meter for mounting in the accessory shoe. Dimensions: 31mm diameter at the end of the hood, 39mm long (1 1/2 x 1 9/32 inches).
Shoe mount (foot?) is hidden on the other side.
Slightly unusual in having a concentric circle pattern on the cell window, rather than the conventional honeycomb .
I decided to use selenium to create a blue tone on this one to bring out the tonality of this ignition image. Thoughts welcome.
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Here's a photo from 18 June 2014, when Collings Foundation brought their B-17, B-24 and P-51 to Skagit Regional Airport. My photoset is here.
My new baby girl whe she was still in the hospital.
I can't find many (if any) reference images for before/after toning of various papers and I can't find a copy of Tim Rudman's book on toning, therefore I am creating tests and will try to publish them here for the rest of the darkroom users out there!
Top: Kodak Polycontrast RC glossy paper
Middle: Forte Polywarmtone FB paper (added white vignette)
Bottom: Forte Polywarmtone FB paper, toned in Harmon Selenium toner
All prints developed in rather used Ilford warmtone developer and 2 bath fixed to eliminate toning stains.
Tmax 400 film, shot at iso 800, developed in Tmax dev.
Compact 24x36 courant en France. Exemplaire n° 833268, objectif fixe, 45 mm, ISCO Color-Isconar, f:2.8(22), mise au point sur l'optique, 1m-infini, obturateur central Gauthier (AGC) Prontor 300 à lamelles métalliques, vitesses 30-300 + B, cellule sélénium non couplée en façade et disque de choix du couple vitesse d'obturation / diaphragme pour la sensibilité de film affichée (ASA / DIN), viseur interne fixe, collimaté. 128 x 90 x 70 mm, 430 g, Une évolution du Dignette 300, modèle sans cellule.
Vide-grenier du 7 octobre 2012, Brindas (Rhône)
Photograph scanned from an original hand-printed, selenium-toned print made with Ilford MG FB Classic paper.
3/4-rear view of “selenium*” rectifier lamphouse power supply for the RCA Arc 400 carbon-arc 16mm movie projector, showing the AC input, pilot light, and DC output.
*That's what the specification plate says; a peek through the grille with a flashlight reveals this unit was retrofitted with a pair of high-current silicon diodes mounted in heat sinks along with a large electrolytic capacitor to smooth the DC output.
The Robin Illuminometer 5200 is a copy of Sekonic's 246 Handy Lumi. Scale in Lux. Made in Japan by Sekonic. Around 1965.
Metrovick selenium light meter, made in Manchester by Metropolitan Vickers - a company better known for heavier engineering, such as railway rolling stock, guns and aircraft. They made these (apparently) from 1938 until at least 1947. The dial reads shutter speeds for an aperture of f8 and 23° Scheiner film (it says so in the corners of the dial). It's small - the face is about 49x45mm (less than 2 inches). The calculator for other film speeds and apertures is heavy brass, and slots into the cover of the leather case (or, in mine, falls out of the case as the stitching is worn).
on a girl kick.
©bethephoto.com / bridget photography - 2007
Photo cannot be used for any reason without the written permission of the photographer.
(edited to take out the black border - works better plain.)
Adox Variotone in SE6 Blue
steps from left to right
1. MT3 Vario - bleach 1+200 30 secs, toner 25+7+500ml
2. MT1 Selenium 1+10 3 mins
3. MT7 Iron Blue 2,5+2,5+7+3+900ml 3 mins, clearing bath 2 mins, ammonia 0,01% sol 20secs
view large
The Zenit 11 is a solidly-built camera with essentially the same Leica type cloth shutter as earlier Soviet rangefinder and SLR cameras. It has an external selenium meter mounted on the prism front above the lens. The meter isn't coupled to the camera. The Zenit uses the M42 Pentax screw-mount lens which means there is a variety of lenses from all over the world that will fit it. Partially depressing the shutter release stops down the lens. Additional pressure releases the shutter.
The KMZ and MMZ (BelOMO) manufactured Zenit 11 (Зенит 11) 35mm SLR was a member of the Zenit E family derived from the Zenit ET but with different control placement and generally in all black but examples with chrome tops are known. Examples were produced with several strap lug variations and with the Zenit name in either Latin or Cyrillic script. It was produced from 1981 through 1990.
Technical information
Producer: KMZ/BeLomo
Frame size: 24x36mm
Shutter speed: 1/30, 1/60, 1/125, 1/250, 1/500 and Bulb mode.
Normally equipped with automatic aperture.
Meter: Uncoupled selenium meter above the lens mount.
Lens mount: M42.
Lens: Helios-44-2 2/58.
The Helios 44... is the standard, fast, 58mm lens typically found as the kit prime on the Zenit-series russian SLRs. There are numerous variants available, some of which include multicoated lens elements. And they were made in more than one factory. KMZ was probably the most prolific producer, the one in the pic however has the Valdai logo.
49mm filter thread.
8 diaphragm blades.
F/2-16 max-min aperture.
45cm minimum focusing distance.
Focuses down to 0.5m and has a mag ratio of 1:6.5 at closest focus point. Takes 52mm filters.
Helios-44 is a series of standard lenses for SLR cameras, produced in Soviet Union by KMZ, MMZ, Jupiter from 1958 till 1992 (2001) and it is considered to be one of most mass produced lenses in the world. Based on the lens Biotar 2 / 58 , at the beginning was called "БТК" - "БиоТар Красногорский" (BioTar Krasnogorski). A fast 6-element anastigmat, it was available in both single-coated and multi-coated versions.
Sekonic Auto-Lumi L162 selenium cell light meter, used by the photographer to set exposure on 6 of his cameras (which either don't have LM's or don't have working LM's) and to check the light meters on the cameras that have them! This model was the first light meter used by me, but a different sample than his first one. (...which was lost, stolen, or died; I don't remember which!) Yellow tape measure is in inches. Taken in Albany, CA by a Nikon D40x with a Nikon 18-55mm non-VR kit lens. (at 55) Camera's on-board flash fired.
The meter has three modes: bright light (as seen), reduced light (what the dial is set for... the little lid on the front opens up) and dim light. (which has the reduced light lid up, and a booster pops down from the bottom of the meter... which doesn't work on this sample, as the booster doesn't release.)
Meter is set for the film speed most used by me, particularly in medium-format cameras with lenses in the ƒ 3.5 range! (ASA is the same as ISO, for newer photographers out there...)
The red dial is for use with a movie camera, and is the reverse of the black still camera dial - in the still camera's area, the shutter speeds move with the match needle; on the movie camera the f-stop moves...
I'm not sure why this light meter goes all the way to ƒ 1, as only one lens (the Canon 50mm ƒ 0.95, only available for the Canon 7 rangefinder...) had even come close to that figure, at the time this meter was in production! (1969-72...)
This picture is a reminder that not everybody has somewhere warm to go home to each night, and not everybody who's cold and alone is merely an inconvenience to the rest of us.
Blind Willie Johnson was a singer and guitar player early in the 20th century. He died penniless and alone of pneumonia in the burned out ruins of his house covered in wet newspaper, but his music was chosen to go on the Golden Disc attached to the Voyager spacecraft.
His music is has traveled further than any other man-made object, and lives on.
A plastic bag contained this sparepart selenium cell for the famous Olympus Pen EE camera. So must be from around 1962.
Pity my Japanese is so bad.
slavich bromportrait 80 grade 3, selenium 1+1+9,
arista premium liquid lith 1+1+24+old brown, bessa r2a, yellow-green #11
hc-110, neopan ss ei200, heliar classic 50/2.
Yashica FX-3 Super 2000. Ilford multigrade IV RC Deluxe. Warmtone developer, slightly selenium toned.
The remains of a restaurant that was at the top of the mountain some years ago. Processed with Topaz adjust and finished in Selenium tone.
Best on Black.
fomatone 132, selenium 1+1+9,
arista premium liquid lith 1+1+24+old brown, bessa r2a, b+w #89,
hc-110, ilford sfx 200 ei200, heliar classic 50/2.
Posemètre (cellule sélénium) pour la photo ou le cinéma fabriqué par Dorn, Neustadt / Weinstrasse Plus d'infos. Vendu par FNAC (Lyon) le 12 juillet 1974.
L'étui est en pur simili.