Im going on a Grand Canyon trip in mid late October this year. Im bringing my 35mm SLR to use for B&W shooting and went through my box of frozen B&W rolls. I dug up some Adox Pan 25 and Rollei Pan 25 (which was rumoured to be the same film). These rolls go back at least 3 or more years when they were bought new. They were frozen once bought. Im used to using Efke 25 for this speed of film. I notice Adox/ Rollei Pan 25 is no longer sold. First off is this film to old to risk using today on a once in a lifetime trip? Secondly if its okay- what could I expect the look of the film to be like compared to the Efke film? I'm assuming I'll be shooting the canyon in sunlight.
Or should I play it smart and just get new rolls of Efke 25? How is the quality control on the Efke these days? Do you think the Efke film would be too contrasty to shoot the canyon in sun? It might cut down on the haze a bit. Or should I go for a more modern film like Pan F 50? My camera is a Canon Elan 7 and I will mostly be using a 50mm 1.8, a 17-40L, and a 100-300 5.6L lenses.
Or should I play it smart and just get new rolls of Efke 25? How is the quality control on the Efke these days? Do you think the Efke film would be too contrasty to shoot the canyon in sun? It might cut down on the haze a bit. Or should I go for a more modern film like Pan F 50? My camera is a Canon Elan 7 and I will mostly be using a 50mm 1.8, a 17-40L, and a 100-300 5.6L lenses.

