Red Filter an absolute requirement for Ilford SFX 200 InfraRed?

[rogerthat]

Hello all

I've just shot a roll of SFX200 and developed it with DD-X for 10:00 @20 deg (well, it was 20 deg when I poured the liquid in! God knows what it's temperature got up to by the tenth minute!)

Anyway, the film is drying up as I type but just a mere inspection of the negative shows me lots of black areas, they all look pretty dense. What went wrong there?

Also, I underrated the film to ASA 160. On top of that I didn't use any filtration. Is it compulsory to put on a normal red filter when shooting with SFX200?

Thanks,
Rogerthat.

 

[Robert Hall]

No, red filter is not necessary, unless you want some IR effects.

Then you would need a deep red and to rate the film much slower.

Look at the shadows, this will tell you if you over exposed or simply over developed your film.

 

[pentaxuser]

While SFX 200 will act as a normal film without filters, I found it grainy for 200 speed and unless I was intending to use at least a red and better still a SFX filter for a "IR type" effect, there are better films for non IR type shooting.

pentaxuser

 

[rogerthat]

Alright, thanks guys! Will try out the filters.