Re: Film reflectivity & TTL flash

2003-05-30 Thread Mark Cassino
At 09:08 PM 5/29/2003 -0400, Caveman wrote: What I know is that ISO speed is just a (usually good) starting point for your "calibration" of the camera - processing lab system. With an LX, film reflectivity influences all my pics, flash or not... Actually, it would only influence shots taken at

Re: Film reflectivity & TTL flash

2003-05-30 Thread Mark Cassino
I'm not aware of a table that quantifies the results - though as I mentioned in the article just pulling out the fill leaders and running a Pz-1p over them in spot metering mode showed a wide range of reflectivity. Wm Robb pointed out that the color cast of the film could have a disproportiona

Re: Film reflectivity & TTL flash

2003-05-30 Thread Caveman
Andre Langevin wrote: This must have been discussed at lenght a few times on the PDML, but is there any "table" available with reflectivity of current films? I don't know about such table, and even if one existed, it would give you just a "starting point" for further experimenting. What I know i

Film reflectivity & TTL flash

2003-05-30 Thread Andre Langevin
http://www.markcassino.com/essays/ttlflash.htm Mark, I found your article on TTL reflectivity of films that points an underexposure problem with Kodachrome and TTL flash. My TTL flash photos with KR have been often a bit over saturated or almost perfect on stage where the black surrounding com