Help! Are these the same sprays?

Essentially how dark something can be before it appears completely black. I think they are claiming that it helps you see the shadow detail that in a straight print would be hard to discern (like bringing up the pattern on a mosaic floor by getting it wet, to use an archaeological analogy).

No idea if they are the same thing.

K.

Dmax = -log10(minimum print reflectivity) is a measure of the deepest black tone a display or printer/ink/paper combination can reproduce. It is an extremely important quality factor. Images with poor Dmax look pale and weak. Dmax = 1.7 is a good value for matte prints; 2.0 is a good value for glossy, semigloss, and luster prints.

I was recommended to use the Hahnemuhle spray by a print expert at the RPS but there was a problem obtaining it at the time so I bought the Permajet spray instead. Permajet produce two different protective sprays for gloss (Permaseal) and for matt (Permafix). I have tried the matt version which gave a nice even spray without any large droplets but didn’t notice any difference in the colour or shade intensity.

I cannot see what finish the Hahnemuhle gives so I would recommend testing it on some small photos first.

I would like to hear how you find it! I masked half a photo to see if there was any difference in the surface or colour intensity.

And then there are authentification stamps and the “limited edition” certification!