Efke PL100 - satin back

[Hervé V.]

I've processed my first Efke PL100 4x5 in my B/W slide process today, and i'm surprised to see the back side has a satin aspect and is not brillant .
I've processed many rolls of 35mm Efke 100 before and have never seen that .
Maybe the support is not brillant ? normal ? yes ? no ? sometime ?
Thanks for help

 

[patrickjames]

The texture on the back is for retouching usually. Anyone can correct me if they are more familiar with this film.

 

[David A. Goldfarb]

This is true of many large format films. It is a retouching surface.

 

[Hervé V.]

Thank's for your responses ;-)
Nice to see it's normal .