Painting with Developer
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As I mentioned a few days ago, I am currently looking into the production of ferric oxalate, not because I am dissatisfied with Bostick&Sullivan's product, but merely out of a thirst for knowledge.
I do not know the recipe of B&S, presumably it is iron(III)-nitrate and oxalic acid.
In my first attempt I followed the recipe of Pizzighelli and Hübl (ferric hydrate and oxalic acid). An interesting alternative, but time-consuming.
In the second attempt, it was iron(III)-nitrate and oxalic acid. The time required is similar, but with fewer steps.
The substance is not clearly defined, which makes it difficult to determine the exact content of oxalate solutions. The prevailing opinion is that the solution for the platinum process should contain 27% iron(III)-oxalate, for the Kallitypy 20%.
For practical purposes, the determination method using the specific gravity is sufficiently accurate, although any free oxalic acid present cannot be determined.
For the Kallitype, a specific gravity of 1.13 results in a solution of about 20%; for the comparison of the mode of action, the three oxalate solutions were brought to exactly this value. The measurement of the pH value showed clear deviations between the (acidic) solutions, which indicates different contents of free oxalic acid.
Paper: Hahnemühle Platinum Rag
Developer: Sodium Acetate
To obtain comparable densities, different exposure times were necessary.
From left to right:
B&S 3 minutes, P&H 2:30 minutes, Ox (iron nitrate) 2:15 minutes.
Wie schon vor einigen Tagen erwähnt, beschäftige ich mich momentan mit der Herstellung von Eisen(III)-Oxalat, nicht weil ich mit dem Produkt von Bostick&Sullivan unzufrieden wäre, sondern lediglich aus Wissensdrang.
Die Rezeptur von B&S ist mir nicht bekannt, vermutlich handelt es sich um Eisen(III)-Nitrat und Oxalsäure.
Bei meinem ersten Versuch bin ich nach der Rezeptur von Pizzighelli und Hübl (Eisen(III)-Hydrat und Oxalsäure) vorgegangen. Eine interessante Alternative, doch der Zeitaufwand ist hoch.
Beim zweiten Versuch waren es Eisen(III)-Nitrat und Oxalsäure. Der zeitliche Aufwand ist ähnlich hoch, allerdings bei weniger Arbeitsschritten.
Die Substanz ist nicht klar definiert, was es schwierig macht, den exakten Gehalt von Oxalat-Lösungen zu bestimmen. Nach vorherrschender Auffassung sollte die Lösung für den Platinprozeß 27% Eisen(III)-Oxalat enthalten, für die Kallitypie 20%.
Für die Praxis ist die Bestimmungsmethode über das spezifische Gewicht hinreichend genau, wobei allerdings ein eventuell vorhandener Anteil an freier Oxalsäure nicht festgestellt werden kann.
Für die Kallitype ergibt sich bei einem spezifischen Gewicht von 1.13 eine etwa 20% Lösung, für den Vergleich der Wirkungsweise wurden die drei Oxalatlösungen auf exakt diesen Wert gebracht. Die Messung des pH-Wertes zeigte deutliche Abweichungen zwischen den (sauren) Lösungen, was auf unterschiedlichen Gehalt an freier Oxalsäure hindeutet.
Papier: Hahnemühle Platinum Rag
Entwickler: Natriumacetat
Um vergleichbare Dichten zu erhalten, waren unterschiedliche Belichtungszeiten erforderlich.
Von links nach rechts:
B&S 3 Minuten, P&H 2:30 Minuten, Ox (iron nitrate) 2:15 Minuten
Photo information:
Film type: 135.
Film name: Aviphot Pan 200.
Developer: Kodak.
Developer maker: D-76.
Process: 20°C.
Developer dilution: 1+1.
Developing time: 14'.
Scanner manufacturer: Epson V550.
Rollei Superpan in Finol,
Kallitype onto Hahnemühle Platinum Rag,
Sodium acetate developer,
MT6 Nelson Gold toner
Photo information:
Film type: 135.
Film name: Rollei RPX 400.
Developer maker: One Shot R09.
Process: 20°C.
Developer dilution: 1+50.
Developing time: 21'.
Filter(s) used: no.
Scanner manufacturer: Epson V550.
Rolleiflex T, Delta 400 @ISO800 in Finol,
Kallitype onto Hahnemühle Platinum Rag,
developer Rochelle salt, MT10 Gold Toner 2 minutes after fixing.
Toned Kallitype,
Arches Platine, Sodium acetate developer, short (20 secs) Palladium pre-toning and after fixing alkaline Copper toner 1:30 mins.
Holga 120N, Efke IR820, eco film developer,
Kallitype.
Directly used MT17 Selenium toner decreases the saturation. After a pre-toning with Lead, the opposite happens.
It used to be a pub. The Sun Inn offered everything the traveller needed including accommodation and a beer garden behind the building. These days, pubs are being converted into residential homes and developers make sure that the yard behind is turned into accommodation too, rental or other.
Fuji X-Pro1.
The bright, late morning sun pairs with the evenly-spaced ties (sleepers) atop the Rocksprings trestle to deliver a light-dappled belt of shadow on the Mojave riverbed which resembles a strip of 35mm film, complete with perforations :-)
Camera: Eho Baby Box (Nr. 182, 1932-1939, with Eho-Duplar 50mm f/11 lens). This tiny (www.flickr.com/photos/inspiredphotosdotcom/5585467090/in/...) half-frame 127-film German box camera is similar in size to its 1930s American counterpart, the Kodak Baby Brownie.
Film: Kodak Verichrome Pan 127 (expired 1972), developed in Arista Liquid Developer for 5:45 minutes @ 68 degrees, and scanned with an Epson V600 scanner.
Bald Head Island, North Carolina
Perseus, Auriga, and Taurus rising in the east. Two exposures, one for the foreground and one, using the Pentax Astrotracer function, for the sky.
Pentax K-1
SMC Pentax 1:3.5 28mm
Iridient Developer
Affinity Photo
Holga 120N, Delta 400 @640 ASA, yellow filter, Finol.
Kallitype onto Hahnemühle Platinum Rag,
developer Rochelle salt/Sodium tungstate mixture.
Vor 250 Jahren begann man hier in Hürth damit Braunkohle abzubauen. Anfangs wurde diese Kohle ausschließlich zum Heizen benutzt. Man mischte die zerkleinerte Kohle mit Wasser zu einem Brei, preßte diesen in eine Form und ließ ihn trocknen. Die Geburtsstunde des Briketts, oder wie man in dieser Gegend sagt, des Klüttens. Das erste Klüttenwerk (von 1884) lag in unmittelbarer Nähe der Grube in Alt-Hürth. Als diese Grube ausgekohlt war, wurde die Kohle aus anderen Ortsteilen mittels einer Seilbahn hierher transportiert. Der Straßennahme „Klüttenweg“ erinnert an diese Seilbahn. Der rekultivierte Bereich der ersten Grube ist heute das Landschaftsschutzgebiet Hürtherberg, das ca. 300 Meter vor meiner Haustür liegt.
Lignite mining began here in Hürth 250 years ago. Initially, this coal was used exclusively for heating. The crushed coal was mixed with water to make a pulp, pressed into a mould and left to dry. This was the birth of the briquette, or as we say in these parts, ‘Klütten’. The first briquette plant (from 1884) was located in the immediate neighbourhood of the mine in Alt-Hürth. When this mine was exhausted, the coal was transported here from other parts of the town by cable car. The street name ‘Klüttenweg’ is a reminder of this cable railway. The recultivated area of the first mine is now the Hürtherberg nature reserve, which is about 300 metres from my front door.
Heading north from Jones Gap on the Bartram Trail, Nantahala National Forest
Pentax K-1
SMC Pentax 1:3.5 35mm
Iridient Developer
Minolta Autocord, Kentmere 400 @ISO400, Caffenol CL-CS, 15°C starting temperature, 60 minutes, Zone Imaging Eco Zonefix.
Ilford Delta 100, developed in homemade Kodak D-76 (1927), 1+3 dilution
Fujica ST605 + Super Multi Coated Takumar 35mm f/2.0 + Yellow filter
Printed on 18x24 Fomabrom Variant 111 using Fomadon R09 developer
Event: Weston Park Classic Car Show
Location: Weston Park, Weston-under-Lizard, Nr Shifnall, Shropshire
Camera: Canon EOS IX7 (APS)
Lens(s): EF Converted Canon EF-S 18-55mm f/3.5-5.6 IS STM
Film: Jessops Diamond Everyday - expired 2006
Shot ISO: 50
Light Meter: Camera
Lighting: Sunny
Mounting: Hand-held
Firing: Shutter Button
Developer: Bellini C-41 Kit
Scanner: Epson V800
Post: Adobe Lightroom & Photoshop (dust removal)
Taken from London Bridge - my son was visiting from Oz so we had a bit of a traipse around London (travelled on the new Elizabeth Line train as well- oooh!).
"Irvine Sellar, The Shard's developer and joint owner, had an ambitious vision to create an architecturally striking vertical city incorporating retail, offices, hotel, apartments, restaurants and a public viewing gallery."
Scanned Lumen print for a digital print negative.
Kallitype on Hahnemühle Platinum Rag,
Sodium acetate developer.
I am still experimenting with an alkaline copper toner. The conversion from silver to copper is not a complete one, the missing density can be restored with another toner.
Copper on the left followed by Gold (MT10 thiourea-gold 2 minutes).
On the right copper followed by thiourea (MT3 50+10+940ml without a prior bleach 30 seconds).
A hasty three shot panorama taken from the traffic island in the middle of Regent Street while competing for space with tourists snapping the view of the Christmas lights down the street to the right..
From Wikipedia:
Hamleys of London Limited, trading as Hamleys, is a British multinational toy retailer, owned by Reliance Retail. Listed in the Guinness Book of Records as the world's oldest toy store, it was founded by William Hamley as "Noah's Ark" in High Holborn, London, in 1760. It moved to its current site on Regent Street in London's West End in 1881. This flagship store is set over seven floors, with more than 50,000 lines of toys on sale. It receives around five million visitors each year, and in 1994 was the largest toy shop in the world.
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100x: The 2024 Edition
100/100 London landmarks by night
It seems I must have misnumbered my entries to the 100x group, and have reached the group's limit. So I am renumbering this to 100 and calling it a night. It has been a fun and rewarding challenge and I thank everyone who faved, commented and viewed these images.
Cullasaja Gorge, Nantahala National Forest
Pentax K-1
Rokinon 1:3.5 24mm ED AS UMC Tilt/Shift
3-shot shift panorama
Iridient Developer
Affinity Photo
Event: Capesthorne Hall Classic Car Show
Location: Capesthorne Hall, Macclesfield, Cheshire
Camera: Canon EOS 5
Lens(s): Canon EF 50mm f/1.4
Film: Kodak Vision3 50D
Shot ISO: 50
Light Meter: Camera
Lighting: Overcast
Mounting: Hand-held
Firing: Shutter button
Developer: Bellini C-41 Kit
Scanner: Epson V800
Post: Adobe Lightroom & Photoshop (dust removal)
Camera: Rolleiflex 3.5 A
Lens: Carl Zeiss Opton-Tessar 3.5/75mm
Film: Bergger Panchro 400
Developer: Rodinal 1:100 Semistand (1 hour, one inversion after 30 Minutes)
Mehr zu diesem Latergram hier:
zeitmaschinen.org/latergram-2020-japanisches-sternchen-un...
Latergram is my answer to Instagram - i expose a film and put it away for some time without developing it. Sometimes i make notes on the pictures i took and try to imagine how the photograph would look when reading them before developing the film, sometimes i do not take any notes, forget what i took the pictures of and treat myself to a surprise ...
Latergram ist meine Antwort auf Instagram - ich belichte einen Film und lege ihn für einige Zeit in die Schublade, ohne ihn zu entwickeln. Manchmal mache ich mir während der Aufnahmen Notizen, anhand derer ich versuche, mir die Bilder auf dem Film vorzustellen, bevor ich ihn entwickle. Manchmal vergesse ich das und lasse mich von dem überraschen, was ich da vor vielen Monaten für fotografierenswert gehalten habe ...
Cypress, fern, bromeliads, Grassy Waters Preserve, Palm Beach County, Florida
Pentax K-1
SMC Pentax 1:1.8 55mm
Iridient Developer
Game: The Witcher 3: Wild Hunt.
Developer: CD Projekt Red.
Publisher: CD Projekt.
Engine: REDengine 3.
Genre: Action Role-Playing.
Platform: PC.
The sodium acetate developer produces the coolest image tone in Kallitype.
One or the other user may well have doubts about this. If the results are not as cool as expected, this is not due to the developer but to the workflow. A really cool tone is only maintained if the print does not come into contact with tap water before fixing. If the print is rinsed with tap water after the developer or the clearing bath, the image tone will be significantly warmer. It is not a question of which shade is perceived as more pleasant, but rather an advantage to know how to control the colourfulness.
For toning before fixing (platinum, palladium, gold), a rinse cycle is advisable in order not to change the property of the toner by introduced acid. For all tonings after fixing, a cooler initial print has the advantage of a higher maximum blackening. This is not decisive for successful toning, but differences in hue and saturation become apparent.
Left: developer, Citric acid clearing bath 1% (with demineralised water), ATS acidic fixer.
Right with a short rinse with tap water after the clearing bath,
Kallitype
Hahnemühle Platinum Rag, Potassium Citrate developer, ATS alkaline fixer:
untoned
MT10 Gold toner
MT3 Vario toner (thiourea)
Hasselblad 501CM Planar 100, FP4 in Tanol.
Kallitype onto Hahnemühle Platinum Rag,
developer Potassium sodium tartrate/Sodium tungstate mixture.
A cold Sunday in December.
Technical information:
Camera: Bronica ETRSi
Lens: Zenzanon PE 50mm f/3.5
Film: Kodax Tri-X 400
Developer: Adox FX-39 II
Scanner: Canon EOS R camera with Sigma 105mm macro
Other tools: Kasier Slimline Plano Lightbox and Essential Film Holder
Rollei SL66SE, Carl Zeiss Planar 80mm f/2,8, Orange filter, T-MAX 100 Professional (Kodak TMX 6052) developed in Ilfosol S 1+9, digitised by photographing the original negative on a light pad - tethered capture and digital development in Lightroom.
The Howgills as a whole lie within the county of Cumbria, although the area remains in the Yorkshire Dales National Park.
"Cautley Spout is England's highest (cascade) waterfall above ground. (Gaping Gill on Ingleborough falls a greater unbroken distance into a pothole, and Hardraw Force has a greater unbroken fall above ground). The broken cascade of falls tumbles a total of [nearly 200m] down a cliff face at the head of a wild and bleak glacial valley that comes down from a high plateau called The Calf. [...] This fall is one of the few cascade falls in England; most are either tiered or plunge falls." (Wikipedia)
I’m not actually happy with this arrangement, I feel it would be better without the silver cup on the right, as it makes an even number of objects, would be better balanced with an odd number. Also, I think the objects should be closer together, and I should have cropped in closer. Let me know what you think.
Mamiya C330, Mamiya Sekor 105mm f3.5 DS @f/3.5, Ilford Pan F Plus @ISO25, 40 minutes in Caffenol CL-CS @15-20°C, Zone Imaging Eco Zonefix.
Cataloochee, Great Smoky Mountains National Park
590nm IR-converted Pentax K-5
SMC Pentax-A 1:2.8 24mm
Iridient Developer
Ilford HP5+ 400, 4" x 5", 320 iso, Normal development in 510 Pyro Developer, 1:100, 7:10 minutes, 21C. Taken October 2022, Ebony SV45TE 4" x 5" Field Camera. Fujinon-T 400mm lens. #25 Red Filter.
Mount Abraham, Clearwater County, Alberta.
Dead developer browns - the death of me. Only two images in this whole pack weren't completely dead! Arghhh.
The eastbound Provo-Denver winds its way out the east end of Plain and through Tunnel 1 on its way east. There is a developer that wants to build a new neighborhood on the opposite side of the track from this shot. If it ever comes to fruition, it will mean houses built up to and on top of Tunnel 1! The project has had a couple of false starts, and appears to be stalled out, at least right now.
©2021 ColoradoRailfan.com
Beginners in the technique of Kallitype often ask which developer they should choose.
Only a comparison of colour and tonal values with identical exposure time. To achieve the same level of blackness with the acetate developer, the exposure time would have to be slightly longer.
I really like my new purchase. It's built like a tank (weighs like one too), built in bellows for macro shots, interchangable lens system, multi-exposure and looks so darn cool.
About the shot - Double exposure and processed in LightRoom. Shoot on Lucky 100 film.
This is also self-developed with Ilford developer and fixer.