Are you, by chance, using them to make in-camera negatives?
That is a whole different enterprise than printing from film negatives.
I always get confused when thinking about the colour process, but I'm thinking that from the above spectral sensitivity curves, the reason the cyan forming (red sensitive) layer is less sensitive is because of the cyan/bluish coloured dye on the paper. Maybe that's another question you could ask--where that cyan forming (red sensitive) curve would be without that dye layer. I presume it would move up a bunch without it, maybe be near the same level as the others.
Ok, I'm trying to wrap my mind around this...I doubt that the colour of the surface of the paper has much to do with the sensitivity of the image forming layers. If it did, it would probably be the reverse of what you are suggesting - the sensitivity of the layers mandating what is on the surface of the paper
Ok, but rather than speculating endlessly, maybe we can have someone who knows answer this: what would the spectral sensitivity graph look like without the dye layer on it.
the reason the cyan forming (red sensitive) layer is less sensitive is because of the cyan/bluish coloured dye on the paper.
All I know experimentally is that when the cyan dye is washed off before exposing, you don't need much yellow/magenta filtration for colour balance (away from cyan) to be correct in around 3200K light. Washing the dye off seems to make the paper more sensitive to red.
Ok, here's a question. What is the colour/hue of the dye they put on the paper and does it primarily compensate for the orange negative mask?
What colour temperature is the paper balanced to without the dye?
I sort of know the answers, but it would be nice to get the real answers.
This is certainly possible, and of course, Fuji also uses several base thicknesses. Having said that, DPII is on the higher end of the base thickness gamma, so it's about as good as it gets. I recognize your comments about wobble though. Framing big prints ideally involves mounting them to a stiff carrier.
Coincidentally, the RC paper base of the Fuji paper comes from the exact same source as Harman/Ilford's, as far as I can tell. Virtually the only manufacturer of photographic paper bases currently is Schoeller. This doesn't mean all papers are the same - far from it, and I suppose Schoeller may even manufacture specials for individual clients provided they buy sufficient quantities.
Mind you, the base comes from Schoeller, but Fuji does still laminate the PE layers on both sides if my memory serves, and everything on top of that (evidently).
Ive tried, and been trying to squeeze information from LIFX about what particular red LEDs they use. They are so far unwilling to share.
Not sure how to formulate the question exactly, but we know that red on the crystal archive paper peaks around 660nm. What effect would having shorter wavelength red for longer exposures have on the color balance? What wavelength red do the printers that they have designed the paper for output at? I just want to know as much as possible about printing from modern LED lights vs the high tech machines that the paper is designed for.
My typical exposures are close to 10 seconds. I know that these papers are designed for much shorter exposures. The results seem to be OK, but what is the effect? Is it better to have shorter exposures?
I've been getting decent results by eye but going by an amateur understanding trying to guess and hope if it will all work. I came from the assumption that modern papers give a blueish tint on dichroic heads because of the skewed sensitivity, and it would actually be better to use LED lights like those in the lightjet printers. I guess another way of asking the question is, what is the weakness if any using halogen dichroic light when the paper is designed for lightjet?
Whatever information you are able to get, this would be a valuable resource for amateurs. I'd suggest doing a video if you're up for it?
I would do the same with Fuji but don't have any Kodak paper to compare it with so that would be a bit pointless. However for what it is worth the Fuji paper when handling it does feel a little flimsy in comparison. It does 'kink' a lot easier too.
Ask the Fujifilm paper fellows if anyone else in the world currently makes color negative paper? I don't think that Sino Promise is?
Can You ask what the minimum production batch is. Maybe we could order and buy such an optimized paper once a year.
I doubt that the colour of the surface of the paper has much to do with the sensitivity of the image forming layers. If it did, it would probably be the reverse of what you are suggesting - the sensitivity of the layers mandating what is on the surface of the paper.
His minilab was one from the transition period that formed the image on an LCD which was then backlit/exposed with a halogen light source and dichroic filters. Hence, it printed digital files, but exposed using an enlarger-like light source. The Fuji people only found this out by accident, as they visited this lab and asked to have a look inside the machine.
You're welcome, I'm glad someone finds all this stuff useful.
There's a pretty broad range of Fuji papers. What you say might apply to one or two of them, but no to others. I've got a sample pack of their papers here on my desk and I can tell you they're all over the place in terms of flexibility/stiffness.
Also note that Kodak paper exists no more. It's Sinopromise, and their papers are apparently a far cry from what Kodak Endura once was, especially in terms of longevity. We shouldn't expect today's Endura paper to last very long on display.
I think for most of us we use the cut sheets
My concern is that people won't give color printing a try. You don't need anything fancy to print color.
The changes to papers prompted by digital are more varied than just a contrast change. Some of those changes were to necessary to cater for the short exposures a digital system needs to make in order to maintain economically attractive productivity levels. Some of those changes were cost and complexity reductions that were allowed by digital, since direct matching between the paper and a negative was no longer necessary.Papers were "digitally" tweaked in one respect for sake of deeper DMax and steeper shadow curve contrast in relation to relatively anemic digital printing devices.
As far as these papers being optimized for discontinuous RGB laser sources rather than full-spectrum halogen bulbs
If today's CA is a better or worse than earlier CA papers (i.e. the ones from 20+ years ago), depends on how you look at it. For optical printing from negatives, it's far worse, because it's not compatible with that anymore, but as you and many others have noted (or rather, didn't notice), most people don't experience this as a problem. Compared to its current siblings in the Fuji paper lineup, it's the entry-level product with lower dmax, lower gamut and lower life expectancy.I wouldn't even classify cut-sheet CAii a "bastard product". It is thin, but overall, a better performer than many earlier renditions of Crystal Archive.
If you can't get saturated colors on CAii
My main problem with normal CAII is not saturation itself but the lack of blacks, I think it is also an issue with digital printing.
Not such problem with CA Supreme or DPII.
I really do wish they would cut Maxima into 8" or 12" rolls, but it's unlikely this is ever going to happen. Its thicker layer structure requires extended processing, and Fuji's reasoning is apparently that small rolls will end up in minilabs with default chemistry and processing parameters, yielding sub-standard results.
Does this paper require Fuji Hunt CPRA Digital chemistry?
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