Junkyard Angel Posted March 7, 2011 Share #1 Â Posted March 7, 2011 Advertisement (gone after registration) I need help setting my film speed ASA & Weston on my leica iiif. i'm using kodak tri-x 400 b&w film. but there's no setting for 400 on the ASA or Weston settings. is this setting incredibly important/will it affect exposure? help? Link to post Share on other sites More sharing options...
Advertisement Posted March 7, 2011 Posted March 7, 2011 Hi Junkyard Angel, Take a look here Setting film speed. I'm sure you'll find what you were looking for!
andybarton Posted March 7, 2011 Share #2 Â Posted March 7, 2011 You don't need to set anything on the camera, but need to adjust the Weston to the asa of the film. Then you use the Weston meter to assess the exposure and transfer the settings to the IIIf. Link to post Share on other sites More sharing options...
chris_livsey Posted March 7, 2011 Share #3 Â Posted March 7, 2011 For the pedants amongst us, mea culpa, this is an interesting summary of Weston speeds and meters.Speeds Link to post Share on other sites More sharing options...
pop Posted March 7, 2011 Share #4  Posted March 7, 2011 For the pedants amongst us, mea culpa, this is an interesting summary of Weston speeds and meters.Speeds  The last line line (for 27 DIN) can not possibly be right. An increase of the DIN value by three points exactly doubles the ASA value. As far as I know, ASA values are the same as ISO values.  Hence the last line ought to say 27 DIN - 320 ASA. For most purposes, that will be close enough to 400 ASA. Link to post Share on other sites More sharing options...
earleygallery Posted March 7, 2011 Share #5 Â Posted March 7, 2011 I need help setting my film speed ASA & Weston on my leica iiif. i'm using kodak tri-x 400 b&w film. but there's no setting for 400 on the ASA or Weston settings. is this setting incredibly important/will it affect exposure? help? Â Just to add, the film type/speed dial on the lllf (inset to the film advance knob) is purely a reminder. Best to ignore it altogether. Although strangely if I set my lllf to colour when using TriX I get the most beautiful vivid colour prints, very 50's looking. Link to post Share on other sites More sharing options...
chris_livsey Posted March 8, 2011 Share #6 Â Posted March 8, 2011 The last line line (for 27 DIN) can not possibly be right. An increase of the DIN value by three points exactly doubles the ASA value. As far as I know, ASA values are the same as ISO values. Â Hence the last line ought to say 27 DIN - 320 ASA. For most purposes, that will be close enough to 400 ASA. Â 27 DIN is actually 406 ASA (told you it was pedant time) Link to post Share on other sites More sharing options...
!Nomad64 Posted March 8, 2011 Share #7 Â Posted March 8, 2011 Advertisement (gone after registration) The last line line (for 27 DIN) can not possibly be right. An increase of the DIN value by three points exactly doubles the ASA value. As far as I know, ASA values are the same as ISO values. Â Hence the last line ought to say 27 DIN - 320 ASA. For most purposes, that will be close enough to 400 ASA. Â If I'm not wrong that was before they reformed the ASA scale. Back in the '50s 21 DIN were 80 instead of 100 ASA and accordingly 24 DIn were 160 ASA and 27 DIN were 320 ASA. But settings the ASA/DIN values on the disc on your camera serves only as a reminder. The camera has no connection with it. What matters to you are the values you're setting on your light meter. In any case it wouldn't be that much problem. Even if you made confusion and exposed "wrongly", the difference between 320 and 400 ASA is one third of a stop, something that is tolerated by the film. Â And if you really want to go on the safe side you can always apply the Sunny 16 rule, in force of which on a bright sunny day you'd set f16 (or f11 if you're living in northern countries) and a speed which is 1/your film speed in ASA. In your case you'd have go for... 1/500. Â Cheers, Bruno Link to post Share on other sites More sharing options...
bill Posted March 8, 2011 Share #8 Â Posted March 8, 2011 +1 for Sunny-16 (or Sunny-11 in the UK:rolleyes:). Once learned, never forgotten and easily adaptable to pretty well every circumstance, indoors as well as out. I don't carry a meter anymore. Â Regards, Â Bill Link to post Share on other sites More sharing options...
Xmas Posted March 8, 2011 Share #9 Â Posted March 8, 2011 I need help setting my film speed ASA & Weston on my leica iiif. i'm using kodak tri-x 400 b&w film. but there's no setting for 400 on the ASA or Weston settings. is this setting incredibly important/will it affect exposure? help? Â The Weston should have a 400 setting, you may/will have to press a dinky button to allow the speed settings to be adjusted, note it does not look like a button, it may be rectangular & silver color.. It should not need any force, dont try... Â If it is an early Weston III or earlier then the speeds will be in Weston and you set 320 Weston for 400 ISO film. Â try googling for a user manual for your meter, and weston speed as well, or what model do you have? Â Noel Link to post Share on other sites More sharing options...
richam Posted March 8, 2011 Share #10 Â Posted March 8, 2011 Although strangely if I set my lllf to colour when using TriX I get the most beautiful vivid colour prints, very 50's looking. April 1 is still a few weeks off, though. Â Agree with Bill Palmer. Sounds to me like the meter is a crutch for you instead of a tool. Once you understand sunny 16 and the basics of exposure, you don't need a meter. Link to post Share on other sites More sharing options...
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