Negative Sustrate

[Raúl Aragón]

Hi everyone, has anyone tried Ferrania Transparency film for printing your negs? I've tested against Pictorico Premium OHP and I'm getting deeper blacks with Ferrania. or should I'change my curve and exposure to compensate?

 

[koraks]

Ferrania Transparency film

Do you mean this product: https://www.laboldtech.eu/prodotto/ferrania-cs-clear-film-premium/ ?

I've tested against Pictorico Premium OHP and I'm getting deeper blacks with Ferrania

Do you mean a deeper black on the final print, or a deeper black on the inkjet negative on the Ferrania film than on the Pictorico?
The Ferrania film is quite thin and transparent, so it makes sense that with the same exposure time you get an overall darker image in the final print using this film. If that's what you mean: I'd start by adjusting the exposure time so you get the same black point as with the Pictorico. Then do a density measurement to see if your curve needs adjustment.
In general, it's safe to assume that your linearization curve may need slight adjustment when switching transparency film or inks, but always start by establishing the baseline exposure.

 

[Raúl Aragón]

Hi Koraks, thanks for the advice, yes it's the product from Lab Old Tech.
I'was referring to the final print, I tested both and the result was that my base exposure with pictorico is 8' 30" and with ferrania it's 7' 30". I'dont have a densitometer, however It's perceptible to the eye that with Ferrania is easier to achieve (in final the print) deeper blacks and tone separation (at least for my poor ability at building curves)

 

[koraks]

Yes,that sounds plausible. Stick with the Ferrania film then!