I've picked up a fast lens petzval type lens from our friend Jim Galli, with a fixed aperture of f2.0 or there abouts. I'm currently using Tri-x 320, the combo fo f2.0 and 320 ISO film, which is wonderful for low-light shooting!
However, this means I can't really use the lens in the day time outside (and I want to leave the lens with a wide aperture!). I'm using the lens on a speedgraphic, so my maximum shutter speed is 1/1000th (I've tested it, and 1/1000th seems to be fairly accurate). This helps alot, but not enough.
So anyway, I'm wanting to take this lens and speed graphic to a vintage car race soon to have some fun with some vintage looking shots of old race cars. I think I'm going to want some slower speed film, I think ISO 25 film would put me at about 1/500th at f2.0. And in addition to that, I may put a filter on the lens to reduce the light even more, so I can get a bit of motion blur on the background/wheels in some shots.
So, what would be a good option for slow B&W film used in broad daylight? The slowest speed I see on Freestyle Photographic's website is ISO 25, here are the films I see:
Rollei ORTHO 25, I don't mind the Ortho film, it may actually even enhance the 'vintage' feel of the photographs. I'm not going for accurate vintage photos, just something that has a nice vintage look.
Adox ORT25 Ortho,
Adox CHS 25 Art, (out of stock)
Efke PL 25 M, however they specifically mention to NOT over expose, so I'm guessing this would probably not be a good film to use, since I'll probably be shooting at a lower ISO than rated, then backing off on my development so that I can get some motion blur.
Any advice on which one of these films would fit my needs? or any other options?
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