C-41 films, colour temperature and filters

[pellicle]

Hi

as my wheel goes around I find myself returning to thinking that there may be significant benefits to my colour image quality with negative films in using filters like an 80A under indoor tungsten or an 81B on overcast or blue light days (with daylight film).

I've been mainly correcting this using negatives generous lattitude (when scanning) but my recent understanding of just how steep the blue curve is on C-41 films makes me think that I should be helping the film all I can (if I want to get its best out of daylight).

thanks

 

[nickandre]

You will achieve best results by using the correct filtration all the time, but that's a pain and nobody really does with negative film. Outdoors on a cloudy day when the difference isn't significant it shouldn't make a difference. You can merely compensate when printing.

 

[Photo Engineer]

For some very good examples of what is going on with wrong filtration or light temperature, see "Post Exposure" by Ctein.

You do indeed need filters to correct for improper lighting.

PE

 

[pellicle]

Hi PE

For some very good examples of what is going on with wrong filtration or light temperature, see "Post Exposure" by Ctein.

thanks for the reference ... I'm just checking this out on Amazon. I gather from the title that it mainly talks about what you've got on your negative (and how to print that). But I guess it also talks about problems in exposure / lighting so I can infer from that.

I guess to make this a clear question, does it cover the effects of exposure with different lighting conditions and how to avoid those problems?

thanks

 

[Photo Engineer]

Yes. It shows the effect and the cure which is to use the correct filtration.

PE