I still disbelieve that a monobath can make a positive image without the black background (to view the silver image in reflection) -- and any conventional process can, with it. Given the deep blacks a silver gelatin print can produce, I think there's more to tintype style direct positives than just that, too -- something related to silver grain size, perhaps? With collodion, I've read about excess developer (amounts that run off the plate) "carrying the image away", implying there's dissolution of the halide and the potential for solution physical development. For gelatin, that points to glycin as a component of the developer (and considerable risk of dichroic fog).
Harman Direct Positive, I've read, depends on special treatment of the emulsion (not pre-exposure with light, as was the case with one or more direct positive film stocks).
Donald
you can disbelieve all you want ...
^^. its a link to Jason Lane's instagram feed to show a processed plate
the past is here now in the present.. and its not as loud and smelly as 1910 ( and you don't need to watch where you step ).
I've been making silver gelatin tintypes/ambrotypes with
the rockland kit for almost a decade ( off and on ) its fun. ... and it is great to see others doing this too...
no explosive ether fumes in the camera, no silver bath to worry about, no worry that your collodion will dry out, or you have to re-silver your silver bath, no worries .. just plates and developer..
there was a company IDK 5 years ago called galaxy who tried to make a go at direct positive photography too
they had a proprietary developer ( 2 parts ) an a super fast paper they were selling ( photo booth paper? ). from what I understand ( unlike the new55 company in Boston ) galaxy had people from the FSU working with them ( Slavic Photo? ) ... but ran into resistance when people ( here and other places ) got mad with them and quite vocal for calling their process
direct positive (like Kodak called their developer to convert tax (100 ) into chromes.. a version of the Kodak direct positive kit is sold at PF in Montana and still called Direct Positive ) mainly because in our recent past people were used to Ilford's product being called
direct positive paper that went into a conventional developer... its too bad there was so much resistance and harshness because it was a lot of fun, and could be used with any paper ( and probably film ) to be a single step positive conversion...