FOMAPAN 100, image samples

[shawn]

Horizon 202, Fomapan, HC110 1:63

 

[Freakscene]

I haven't kept that data for ages. But pretty much everything I developed conventionally hit 0.1 DU above FB+F for Zone I at about 1/2 box speed.

After I saw this pattern across many dev/film combos, I put my densitometer away.

But... this is not cast in stone. People will get different EIs depending on how they agitate, accuracy of their meters, accuracy and resolution of their thermometers, and even water composition. Also, everyone meters differently.

Fixed density 0.1 DU above fb+f measurement is not an ISO speed, it’s a zone system tonal placement terminology derived from an older speed system. If you’re not measuring the delta logH and ensuring that it conforms to the ISO standard, you’re not measuring the ISO speed. I am not saying it is not useful, I am simply stating that this speed point is not the ISO speed.

 

[chuckroast]

Fixed density 0.1 DU above fb+f measurement is not an ISO speed, it’s a zone system tonal placement terminology derived from an older speed system. If you’re not measuring the delta logH and ensuring that it conforms to the ISO standard, you’re not measuring the ISO speed. I am not saying it is not useful, I am simply stating that this speed point is not the ISO speed.

I never claimed to be measuring ISO. I am measuring EI... the practically useful film speed.

 

[Coldkennels]

Personally, I find Fomapan 100 lands at a perfect 64 Weston when developed in Rodinal 1:50.

That's the original 64 Weston, before the mid-50s revision.

I've not figured out how that translates to BSI or Scheiner. European Scheiner, of course - not that weird American one. Weston speeds never let me down.

 

[Slumgullion]

Dad by Jim Fischer, on Flickr
Zeiss Ikon ZM, Zeiss 35mm f/1.4 ZM, Fomapan 100 @ 50, Xtol 1:1...buzzed the focus a bit, but it's hard when your driving through a bumpy field trying to take a photo at 1/30'.

Dad by Jim Fischer, on Flickr
Leica M5, Artizlab 35mm f/1.4 Classic, Fomapan 100 @ 50, Xtol 1:1

Dad by Jim Fischer, on Flickr
Leica M5, Artizlab 35mm f/1.4 Classic, Fomapan 100 @ 50, Xtol 1:1