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
Ilford HP5 35mm film, developer ID-11 10' at 20°C. Exposure ISO 400 @35mm lens, available light. Digitized with Alpha 6000 edited in ACR, inverted in CS6.
Kallitype on HPR.
Dig neg.
Henry Hall's developer from 1903 (sodium acetate + a touch of tartaric acid).
Prefix toned in previously used Platinum toner (Moersch 1+9).
Fixed in Moersch ATS alkaline fixer (1+9).
Toned Kallitype,
Arches Platine, Sodium acetate developer, short (20 secs) Palladium pre-toning and after fixing alkaline Copper toner 1:30 mins.
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.
Gibson Bottoms, Mainspring Conservation Trust, Macon County NC
590nm IR-converted Pentax K-5
SMC Pentax-A 1:2.8 24mm
Iridient Developer
Affinity Photo
Explored June 11, 2022
(Image taken with an Analog film camera).
A long term project will guide you and help you grow.
(Press "L" or click on the image for a large view).
Black & White Film: Arista Edu 100 @ISO 100.
Camera: Canon A2 (1992)
Lens: Canon EF 28-105mm f/3.5-4.5 II USM (2000)
Developer: Xtol 1:1 @78°f for 12 minutes,
Scanner: Plustek 8100 @3,600dpi. with SilverFast 8.
Editors: ACR / Silver Efex Pro 2 / ACDSee Photo Editor 11
(Location: Hillsborough River State Park, Thonotosassa, Florida).
Thanks for your comments, faves and views, really appreciated!
From Wikipedia: Arctium is a genus of biennial plants commonly known as burdock, family Asteraceae. Native to Europe and Asia, several species have been widely introduced worldwide. Burdock's clinging properties, in addition to providing an excellent mechanism for seed dispersal, led to the invention of the hook and loop fastener. (That's Velcro to you and me!)
Arctium species generally flower from July through October. Burdock flowers provide essential pollen and nectar for honeybees around August, when clover is on the wane and before the goldenrod starts to bloom.
*** So as these have yet to turn into their summer green a monochrome treatment seemed appropriate. ***
Slightly recomposed and slightly different lighting, in color this time. Appalachian cove forest along the Bartram Trail, Nantahala National Forest.
Pentax K-1
SMC Pentax 1:1.8 55mm
Iridient Developer
Bridal Veil Falls at high flow, Cullasaja Gorge, Nantahala National Forest
590nm IR-converted Pentax K-5
SMC Pentax-A 1:2.8 24mm
Iridient Developer
Exploring some developers that made items in the NX-Nardcotix size. Check my blog for the deets: billybeaverhausen.com/2019/10/20/the-nx-nardcotix-size/
Minolta Autocord, Kentmere 400 @ISO400, yellow filter, Caffenol CL-CS, 15°C starting temperature, 60 minutes, Zone Imaging Eco Zonefix.
Cypress, fern, bromeliads, Grassy Waters Preserve, Palm Beach County, Florida
Pentax K-1
SMC Pentax 1:1.8 55mm
Iridient Developer
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,
Camera: Agfa Isolette III (1956)
Lens: Solinar 3.5/75mm
Film: Foma Retropan 320
Developer: Rodinal 1:50
Location: Benediktbeuern, Bavaria
Mehr über dieses Latergram/ More about this latergram (in german language): zeitmaschinen.org/momente-aus-der-zeitreuse-ein-ungeplant...
Snow was commissioned by the Eaton Centre's developers, Cadillac Fairview, and architect Eberhard Zeidler to provide a permanent art work to hang in a skylit galleria, which would be visible from several levels and balconies as well as from a ground-level corridor spanning Dundas and Queen Streets. Snow's original intent was to depict a flight of geese breaking formation as if to land in the mall.
In 1982, Snow sued the corporate owner of the Toronto Eaton Centre for violating his moral rights by altering Flight Stop. In the landmark case Snow v Eaton Centre Ltd, the Ontario High Court of Justice affirmed the artist's right to the integrity of their work. The operator of the Toronto Eaton Centre was found liable for violating Snow's moral rights.
During the Christmas season of 1981, the Eaton Centre placed red ribbons around the necks of the geese. Snow brought an action against the Centre to get an injunction to have the ribbons removed. He had argued that the ribbons were a "distortion and mutilation" of his work, and that it "ultimately affected his artistic reputation". The judgement in Snow's favour held that the sculpture's integrity was "distorted, mutilated or otherwise modified" which was "to the prejudice of the honour or reputation of the author"
(Thank you Wikipedia!)
Kallitype
Hahnemühle Platinum Rag, Potassium Citrate developer, ATS alkaline fixer:
untoned
MT10 Gold toner
MT3 Vario toner (thiourea)
Circa 1860-62 Jamin et Darlot Petzval sixth-plate lens (roughly 7 inch focal length) mounted on a 4x5 Speed Graphic. There is no slot for Waterhouse stops so this is shot wide open, about f/4.
Developed in divided D-23 developer in a Stearman tank, 10 minutes in "A" and 3 minutes in "B" (sodium carbonate).
True to form for a Petzval, the usable area is about 20 degrees... but note: no 'swirlies"
Just an experiment, nothing more.
Rollei SL66SE/80mm, 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)
Here you can see how early car manufacturers used lead (instead of Bondo) to fill in roof joints. Notice how sanding (file) marks are still present in the lead. More importantly, just how thick the early paint jobs had to be to cover these scratches up.
Image:
Konica T4
40mm f1.8
Fuji 4791 duplicating film.
POTA developer, 12 Minutes.
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.
The camera I used was a Zeiss Ikon 521 with a Tessar 3.5/75mm lens. It takes 16 pictures on 120-rollfilm, format 4.5x6cm. Aperture was set to 5.6.
Film used was Kodak Tri-X@400.
Developed with Jobo B&W developer, 11 minutes, rotary-development.
This is a bulk gas carrier and guess what. That is a gas power station in the backround
Shot from Portishead Quay as the BRO Developer approaches Avonmouth.
Polaka 14 apartments
Location: Polaka 14, Wroclaw, Poland
Architects: Dziewoński Łukasiewicz Architekci
Developer: Toscom Development
Built: 2017-2018
Every time I come to San Francisco, there is some kind of smart-ass billboard along the highway ... "ask your developer," it says.
Ask her what? Whether Twilio is better than some other provider? Whether the cloud is here to stay? Who comes up with these crazy signs?
Fortunately, it doesn't matter very much ... by the time I come back again, this billboard will have been replaced by something else just as mysterious.
Note: I chose this as my "photo of the day" for Nov 21, 2015
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In early November 2015, I flew from New York to San Francisco to take a weekend street-photography workshop under the tutelage of Eric Kim. As you might expect, I took gazillions of photos; but not all of them were specifically associated with the workshop itself. On the way out to San Francisco, I took a bunch of pictures with my iPhone; and during the weekend, I took a number of photos that had little or nothing to do with street-photography per se.
I’ll upload the photos in dribs and drabs during the next several days, and let you decide which ones are sufficiently interesting to warrant a second look…
I've tested 9 programs for the purpose of processing challenging nightscapes and for preparing images for time-lapses.
The comprehensive review can be found on my blog here:
amazingsky.net/2023/01/01/testing-raw-developer-software-...
The current century old Miami-Dade County Courthouse at 73 Flagler Street will see a new neighbor rise across the street; the new 474-foot-tall, 25-story Miami-Dade County Civil and Probate Courthouse was approved by the Miami-Dade Rapid Transit Developmental Impact Committee back in February of 2021. Designed by HOK, the 537,968-square-foot courthouse building is anticipated to become one of the tallest governmental-use towers in Miami.
Plenary Group, an Australian infrastructure investment firm, is the developer behind the proposals for the new courthouse under Plenary Justice Miami, LLC. The narrow piece of property is located within the western portion of Downtown Miami, also recognized as a part of the Central Business District, and in close proximity to the Government Center Metromover Station and the Interstate 95; bounded by Northwest 1st Avenue to the west, West Flagler Street to the south, Northwest 1st Street to the north and the HistroyMiami Museum to the south. Being that the property is owned by Miami-Dade County, developers had to submit a bid to be selected, where Plenary Group’s proposal was picked as the winner, likely due to the lower construction costs for the project. Other competing proposals were submitted by M-S-E Judicial Partners LLC and Sacyr Infrastructure USA.
Renderings from HOK reveal several elevations with offset window forms, creating a jagged-like texture from afar. The structure will be made of reinforced concrete and clad in what appears to be light-grey masonry with hints of metal trims scattered throughout the building and large floor-to-ceiling glazed windows. The eastern elevation facing the old courthouse features a slightly protruding volume enclosed in glass as well.
Likely due to minimizing construction costs, Miami-Dade County is permitting the project to proceed overriding several regulations. The parking garage will not require screening, and only 11% of the site will be open space whereas the requirement is typically 15%. A building’s facade normally requires 40% glazing, but in this case it will be at 27%. The proposed development can have blank walls facing the public without an artistic expressions such as mosaics or murals, and 0 site trees will be planted, whereas the required amount is 30.
Credit for the data above is given to the following websites:
rel="noreferrer nofollow">www.hok.com/news/2022-11/construction-continues-on-new-mi...
skyscraperpage.com/forum/showthread.php?t=232269
www.thenextmiami.com/vertical-construction-underway-at-do...
floridayimby.com/2021/04/the-474-foot-civil-courthouse-se...
www.tutorperini.com/projects/justice/miami-dade-county-ci...
www.hok.com/news/2022-11/construction-continues-on-new-mi...
© All Rights Reserved - you may not use this image in any form without my prior permission.
Pinhole camera Reality So Subtle 6x6F, film Ilford PanF 50, developed in Foma Retro Special Developer for 4½ min. Something went totally wrong in my development ??!
(grainy and blotchy)
Time is on your side...
Camera // Hasselblad 500CM
Film // Ilford Delta 100 pro
Developer // Kodak HC-110 (B)
Scanned // Epson V850
Manly beach, Sydney, winter 2018. Manly beach is one of Sydney's most popular beaches with both tourists and locals. It's accessible via a half-hourly ferry service from the jetties adjacent to the Sydney Opera House. In winter it's quieter, and more popular with surfers catching the winter swells.
Camera: Leica IIIf
Lens: Cosina-Voigtlander 21mm f/4 Color-Skopar LTM
Film: Ilford FP4+
Developer: Kodak XTOL 1+1
Scan: Epson V700
Please don't use this image on websites, blogs or other media without my explicit written permission. © copyright 2018 Lynn Burdekin. All Rights Reserved.