Very cool thanks !
Printable View
Very cool thanks !
That spreadsheet is great.
I found one I haven't seen in the thread (not that I've read everything).
It's Flow dental film. 5"x12", full speed green, in a box of 50 sheets. I would assume it's made by one of the other big companies and is the same as some of the other full speed greens, but they claim to have their own factory in the US?
I haven't tried x-ray before, but I've been using ortho film for testing and inexpensive camera development, exhibition test shots etc. I am hoping x-ray will be less of a pain.
So far I like the Flow quite a bit. I cut it on a paper cutter into 3 4x5 sheets.
It's a nice film base, seems like polyester, with a noticeable blue tint. Rounded corners.
I shot three quickie tests at 50, 100 and 200 ISO in my Speed Graphic under strobes. The box actually claims it is "Full Speed, 400". I don't know if the 400 is supposed to be ISO or some other rating?
Anyway, it looks pretty good at 100 in 1:100 Rodinal, dunk tank developed for 7 minutes. Densities are right on the money, about .25 in the shadows up to 1.35 in the highlights (and 1.5 or so in the speculars).
Definitely very orthochromatic. The blown glass candleholder immediately on the right is green, the one on the left is red. The top right one is blue. It's very green and blue sensitive, not a surprise, but some people have said their greens seemed
more blue than green sensitive, and that's not the case here.
I dropped the damned neg putting it into the scanner so it's filthy, my apologies.
Attachment 165084
Great result to my old eyes, I think a decent scanner is a must for xray film, scratches and dust are the downside and after spending a few days on a 4x5 neg, removing scratches and dust from the digital scan. IT soon taught me to take great care loading and unloading film and finding an acceptable way to develop to avoid uneven development. I even do as Ansell Adams suggests and vacuum my film holders before loading.
I know inkjet printers are a great way to produce an enlarged negative for alternate printing methods, but in my small town the printing outlet only uses laser printers. Has anyone had any joy producing laser negs on transparencies?? I have great reference material from Dan Burkholder for inkjet printers, but very limited info on laser printers.
The only experience I have with laser prints is when making circuit boards. There used to be a spray on light sensitive resist, can't find it any more. I now use silk screen light sensitive mask. Dichromate in a "paint". Black and white prints and the black needs some touchup every time.
What is your source for FlowDental Film? I have a 5x12 camera and like to have a variety of films to work with.
My experience with laser printers is with older, well used ones, mostly. The pictures look grainy in an odd sort of way, but aren't totally unacceptable particularly to non-photographers. I've used them as gifts.
Thanks for the reply, the one they are using is the latest and greatest apparently, so I will see what the outcome is. I purchased the downloads from Dan Burkholder, which are really helpful and have supplied a copy for the printshop to have a look at, hopefully that can transfer over to laser. Will let the thread know the outcome, it may be helpful to some.
I am using negatives made with a laser printer with reasonable satisfaction.Quote:
Originally Posted by andrewch59
I make both black and white and color prints in A5, A4 sizes.
The larger the print the better, since the negatives are somewhat grainy, but this adds a sort of "artistic" taste to the print.
The negatives are made on translucent paper. If polyester sheets are used the toner in some cases does not adhere perfectly and also static discharge effects appear sometimes.
Use also the blackest toner (original HP in my case, not compatible cheaper toners.
Thanks Salvatore, I'm using the emulsion coated transparency film for Laser and inkjet, yet to see the results. I have just found some toner density spray that can be used, if the density is not sufficient you just spray on another coat (Could be snake oil). I feel like its going off topic, but the basis is still the xray negative.