When I was. A photography student in the 50's one of. My fellow students was near completely colour blind. In those days photography was largely reproduced in black and white, and our limited attention for colour was to dye transfer printing and colour slides. This being so, this student...
May be not I have had a cataract done in one eye and not the other, one gives a yellow tint, the other by comparison blue, with both things seem normal that is the brain sorting things out.
Accurate colour is very much a myth.
It is certainly true that we can measure and produce wavelengths of light very accurately.
However that has only a limited relationship to our perception of colour.
We can perceive the colours of a person by artificial light as being the same as we saw them...
When I lived and worked in London in the 50's the tap water would leave a while scum on the film because the water was so hard. Johnson's of hendon sold photographic tap fitting cartridge filters that were fine enough to clear it completely. Even today it is always safest to use filtered water...
De-ionised water is only really necessary on the final rinse, well filtered water is fine for everything else. Mains. Cartridge filters for photography used to be quiet cheap, but they seem to have vanished from the market
Absolutely. Stainless steel spirals are far quicker to load, only a few seconds and nothing to stick. They could be loaded into a cage for processing in bulk in 3 gallon tanks.
I had cages and spirals. and hangers for 5x4 cut film as well as heaters all for the Kodak system. I 'm now down to a...
You. Can use a. Roll film back on. Most 5x4 cameras , it is convenient and cost effective.
I did so on a number of building and road progress contracts in In the 70's and 80's
Fíxers including F5 do not need to mature. They are simple mixtures of sodium thiosulfate and an alum hardener. The first dissolves silver halides and the alum hardens gelatins.
They could equally work entirely separately as a two stage operation. It is just more convenient to mix them,
However...
In the past cameras were winterised for extreme conditions by servicing them and removing all lubrication except for the judicious use of graphite,
However I have never had a problem with cameras in the UK.eeven in the coldest winters. But with a very old cameras with dried up lubrication...
I am nobody I am just old and worked a long time in photography, print and reprographics during a period of rapid change, that covered glass plates onwards and print from letterpress to digital printing. And all the changes from hand type setting to digital page setting and graphics.
It has been...
It seems to be forgotten now, but special enlargers were made for paper negatives that worked by reflection. Like epidiascopes. It got over the problem of the paper fibers showing as textured grain . I had the chance to use one in the late 40's in in a local studio in Fishguard Wales. He. Also...
It was at that time that Weston and ASA speeds fell into line with each other, there had been a 2/3rd stop difference.
photographers have always established their own working film speeds. To suit their own exposure methods and development practices.
Nice one. That is much the same reason spot lights do not follow the ISL especially when focussed.
You would think, Pinhole cameras would be sharper if the hole could be smaller, however diffraction comes into play and all pinhole cameras are diffraction limited.
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