What is the grainiest bw film and developer?

[TheGreatGasMaskMan]

PT. 1:
HP5, Rodinal 1:6, 1 min, 45 s. 68ºF, Petri 7s

(The perils of shooting at f 1.8...)^

 

[TheGreatGasMaskMan]

Pt. 2:
there were two 1:6 frames with some sort of weirdness:

 

[TheGreatGasMaskMan]

Hp5, Rodinal 1:3, 1 min, 68º F, Petri 7s.

 

[loccdor]

Rodinal 1:3! That's nuts. Great pictures.

 

[thinkbrown]

Hp5, Rodinal 1:3, 1 min, 68º F, Petri 7s.

I got the notification for this, misread it, and thought you developed for 7 seconds

 

[Quiver2]

Strange that no one has mentioned caffenol as a developer. Use the formula for slow films on a high speed film e.g. 400 or greater. The Arista/Fomapan films work for this.



Edit note: Curse you autocorrect!