Karl Beath
13-Mar-2002, 03:52
Hello LF user forum
I am shooting a hall that has mercury vapour lamps (coated white)on the inside. I will be doing a double exposure metering for late dusk and then later switchi ng the lights on and filtering for the second exposure. I have a number of filt er options, the one I wish to use may only reach me in 3 weeks time, this is the Lee Daylight MV-D. Comments on this filter, good or bad choice?
Info on the lighttec.com site suggests 50m + 30r for RDP but in the 99 Fuji data guide it mentions MV indoor 20m+20r and out door 40r+30m. Why the difference b etween information sources on the same film type and secondly please explain the indoor and outdoor, is this ito where the lamps are, I will be outdoors shootin g the building, but the lamps are indoors which filter set will I use. If I can 't get the lee MV-D, I have a lee 30m and a Cokin 002 red filter, with what red number ie 10,20,30,40 or 50 does the Cokin 002 correspond? Is there a site wher e there are corresponding charts of the Wratten, Lee and Cokin system?
Lastly, I use theoretical exposure times for different lighting situations. For example i have used on a recent shoot 45" at f22 for tungsten lights in a house when I was about 10 metres away shooting toward the hse. The inside exposure me asured in the hse was 4" at f22. Is there a way of using the inside reading and distance to hse/bldg to obtain the correct exposure time when outside the hse/b ldg? (If it is the inverse square law, plse explain how I wouls use it) Obvioul sy each architectual shoot I will be at a different distance from the bldg. Is t here an answer to this?
Thanks for any info Karl Beath
I am shooting a hall that has mercury vapour lamps (coated white)on the inside. I will be doing a double exposure metering for late dusk and then later switchi ng the lights on and filtering for the second exposure. I have a number of filt er options, the one I wish to use may only reach me in 3 weeks time, this is the Lee Daylight MV-D. Comments on this filter, good or bad choice?
Info on the lighttec.com site suggests 50m + 30r for RDP but in the 99 Fuji data guide it mentions MV indoor 20m+20r and out door 40r+30m. Why the difference b etween information sources on the same film type and secondly please explain the indoor and outdoor, is this ito where the lamps are, I will be outdoors shootin g the building, but the lamps are indoors which filter set will I use. If I can 't get the lee MV-D, I have a lee 30m and a Cokin 002 red filter, with what red number ie 10,20,30,40 or 50 does the Cokin 002 correspond? Is there a site wher e there are corresponding charts of the Wratten, Lee and Cokin system?
Lastly, I use theoretical exposure times for different lighting situations. For example i have used on a recent shoot 45" at f22 for tungsten lights in a house when I was about 10 metres away shooting toward the hse. The inside exposure me asured in the hse was 4" at f22. Is there a way of using the inside reading and distance to hse/bldg to obtain the correct exposure time when outside the hse/b ldg? (If it is the inverse square law, plse explain how I wouls use it) Obvioul sy each architectual shoot I will be at a different distance from the bldg. Is t here an answer to this?
Thanks for any info Karl Beath