View allAll Photos Tagged selenium
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 This would have been outdated technology when it was released in 1983.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.
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
Yashica FX-3 Super 2000. Ilford multigrade IV RC Deluxe. Warmtone developer, slightly selenium toned.
The Robin Illuminometer 5200 is a copy of Sekonic's 246 Handy Lumi. Scale in Lux. Made in Japan by Sekonic. Around 1965.
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.
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.
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.)
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)
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.
slavich bromportrait 80 grade 3, arista premium liquid lith 1+1+24+old brown, selenium 1+1+9
hc-110, neopan 1600, planar 50/2 zm.
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.
Not sure why they left this one.....
Hasselblad, 50mm lens, Acros in Pyrocat, printed on Ilford MG fiber with light sepia then complete selenium toning
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.
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...)
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.
KMZ Iskra 2.
Russian rangefinder folder 1961~1964
In the middle you can see the Selenium Cell.
Again, clearly somebody repaired/tampered before and obviously loved to use generous amounts of glue.
The view of Upper Falls in Provo Canyon from near the trailhead. It's a short, but very steep hike to this lesser-appreciated fall, little sibling to nearby Bridal Veil Falls.
Canon FTb QL
Canon FD 135mm f/2.5
Ilford HP5+ @ 400
Barry Thornton's Two-Bath
Scanned 8x10 Silver Gelatin Print
Ilford MG FB Classic (Glossy)
Selenium Toned
Decaying smoke stack at the Herring factory in Djupovik, Iceland. Printed on Ilford warmtone with selenium
Scanned Silver Gelatin Print
Ilford Multigrade Paper
Triple Band toned in Sepia/ Selenium
Shot with Ansco Rediflex on 620 film
Haven't done any Selenium treatment in a while, thought I'd give it another go.
Suncor Energy Centre on 5th Avenue SW.
Seen at 11.5mm and f/8
Larger Here - farm5.static.flickr.com/4128/5206158462_d8d42dd640_b.jpg
Posemètre (cellule sélénium) pour la photo ou le cinéma fabriqué par Dorn, Neustadt / Weinstrasse Plus d'infos.
Un exemplaire plus récent est présenté ici.
Brocante du 3 mars 2013, Montrottier (Rhône)
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:
Another day, another lith print...
Next print in the series. The original print colour was much the same as for 'theme', so I split-toned this in selenium and finished it in gold toner.
Lith print on Foma Nature II 532. Developed in warm Fotospeed LD20, plus old brown. Split-toned in selenium, finished in gold.
Mamiya RB67, Kodak Tri-X 400, Rodinal (1+50).
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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'
Cohort Study Indicates That Selenium May Be Protective
Against Advanced Prostate Cancer
Higher toenail selenium levels were associated with a reduced risk for advanced prostate cancer.
Toenail selenium levels reflect long-term selenium intake.
Further studies in low-selenium populations are required.
WASHINGTON, D.C. — A greater level of toenail selenium was associated with a significant decrease in the risk for advanced prostate cancer, according to data presented at the AACR Annual Meeting 2013, held in Washington, D.C., April 6-10.
“This could mean, based on our data and based on data from other studies, that selenium is a modifiable risk factor of advanced, clinically relevant prostate cancer,” said Milan S. Geybels, M.Sc., a doctoral candidate in cancer epidemiology at Maastricht University, in Maastricht, the Netherlands.
The Netherlands Cohort Study on diet and cancer is a prospective cohort study that includes 58,279 men who were aged 55 to 69 years at entry in September 1986. Geybels and colleagues analyzed data from 898 men who were diagnosed with advanced prostate cancer during 17.3 years of follow-up of the cohort.
According to Geybels, previous studies investigating the association between selenium levels and prostate cancer have yielded varying results. One large clinical trial showed that selenium supplementation had no protective effect, while several prospective, observational studies indicated that higher levels of selenium were associated with a reduced prostate cancer risk, especially for advanced prostate cancer.
“Our study is interesting because we specifically investigated men with advanced prostate cancer, a type of prostate cancer associated with a poorer prognosis,” Geybels said. “Also, while most of the prior research, including the large clinical trial, involved men with moderate-to-high selenium levels, men in The Netherlands Cohort Study have selenium levels that range from low to moderate. This is important because low selenium is expected to be related to a higher disease risk.”
He and his colleagues chose toenail selenium as the study biomarker because it reflects long-term exposure, as opposed to blood, which is best for monitoring recent selenium exposures.
The data revealed that greater levels of toenail selenium were associated with a substantially reduced risk for advanced prostate cancer. Men with the highest toenail selenium levels had a more than 60 percent lower risk for advanced prostate cancer compared with men with the lowest toenail selenium levels.
“Our findings need to be replicated in further prospective studies, with an extended follow-up for the assessment of incident advanced prostate cancer, and with a wide range of toenail selenium that includes low selenium levels,” Geybels said. “If our results can be confirmed, a prevention trial of selenium and prostate cancer in a low-selenium population may be justified.”
# # #
Abstract Number: 3613
Presenter: Milan S. Geybels, M.Sc.
Title: Toenail selenium is associated with a decreased risk of advanced prostate cancer
Authors: Milan S. Geybels1, Bas A.J. Verhage1, Frederik J. van Schooten1, Alexandra Goldbohm2, Piet A. van den Brandt1. 1Maastricht University, Maastricht, Netherlands; 2TNO, Netherlands
Introduction: Selenium status has been associated with a reduced risk of total prostate cancer (PCa) and there is evidence that the association is more pronounced for advanced, clinically relevant PCa. This association, however, has been studied over a relatively narrow range of selenium status and data from low-selenium populations are missing. Most prior studies of selenium status and PCa have used plasma/serum selenium, which reflects recent selenium intake, and few studies have used toenail selenium, which reflects longer exposure time windows.
Methods: We studied the association of toenail selenium and advanced PCa risk in the Netherlands Cohort study, which includes 58,279 men aged 55 to 69 years. The study has a case-cohort design; a random subcohort was sampled at baseline in 1986 and incident advanced (stage III/IV) PCa cases were identified during 17.3 years of follow-up. Hazard ratios (HRs) and 95% confidence intervals (CIs) were estimated using Cox proportional hazards regression models.
Results: The study population included 898 advanced PCa cases and 1,203 subcohort members. The average toenail selenium concentration among subcohort members was 0.549 μg/g (standard deviation: 0.128). Toenail selenium was associated with a reduced risk of advanced PCa and adjusted HRs for increasing quintiles of toenail selenium were 1.00 (reference), 0.69 (95% CI: 0.52, 0.90), 0.45 (95% CI: 0.34, 0.60), 0.32 (95% CI: 0.24, 0.44), and 0.24 (95% CI: 0.17, 0.33) (P for trend 6 to 12 years, and >12 years of follow-up were 0.91 (95% CI: 0.85, 0.98), 0.85 (95% CI: 0.75, 0.96), and 0.77 (95% CI: 0.71, 0.84), respectively.
Conclusion: Toenail selenium was associated with a substantial decrease in risk of advanced PCa, particularly during later follow-up. If our results can be confirmed, a prevention trial of selenium and PCa in a low-selenium population may be justified. Selenium exerts important biological functions through its presence in selenoproteins and genetic variation in the major selenoproteins glutathione peroxidase 1 (GPX1) and selenoprotein P (SEPP1) has been associated with the risk of PCa. In a next analysis, in the same population, we will study the association of common variation in GPX1 and SEPP1 with advanced PCa risk, and we will evaluate SNP-selenium interactions.
Four different models of Guerpillon 1st model Guerlux. Top left probably a pre-series model, covered with leather. No ser# on the meter.
Top right ser# 008** , with acc foot.
Bottom left ser# 02*** , bottom plate with rim.
Bottom right, ser# 03***, top section matted, with acc. foot.
Selenium Toned Print
Shot for the NZ Professional Photographers competition in the 90's. This shot won the Transport Section and got the inside back cover of the big book of the comp