Ilford SFX 200 IR - Infrared

[mw_uio]

For those who shoot this film, What filter are you using? How do you compensate for the filter factor? Please explain. Do you use a tripod when shooting this film. This is the next film on the top of my list to try.

Thanks
MArk
Quito, EC

 

[back alley]

i just bought about 10 rolls recently.
i had shot a roll many years ago and liked the effect but never went back to it.
i remember using a #25 red filter and using the built in meter, no tripod as i was shooting street stuff.
i now have a 92 ir filter to use when i start experimenting again.

joe

 

[mw_uio]

Joe, thanks, I do know that the darker the filter, you need to extend your exposure times. If I use what some have recommended is 25 Red, will I have to adjust my exposure times? I am just going to shoot street and cityscape.
I am wondering if I can still use 'aperture priority' as some times I do not have time to meter the shot, will this work? I really do like the effects of this film in a landscape setting, from some of the examples I have seen.

Your 92 filter, is darker than the 25 Red, will you be forced to use a tripod, or does this still allow you to proceed with street shooting?

thanks
Mark

 

[back alley]

if you are using a camera with a built in ttl meter then it should take care of the exposure.
the 092 filter ring says it has a filter factor of 20x to 40x, so i will need a very bright day.

 

[fidget]

I love this film. I generally use it in 120 and then with a tripod when the filter factor adds 4 to 5 stops with Ilfords SFX filter. I found that with a 25 red filter, less extra exposure is needed than with a standard film, say 2 stops. i think that this is because it is more sensitive to red. When operating with IR filters there is considerable guess work involved, the IR light level is very difficult to guage and TTL metering is unreliable, not being optimised for IR. Best to give a generous spread of exposures when bracketing your shots. Not ideal for "the" moment!
Shooting street scenes sounds very adventurous, I think that you may struggle, but would really like to see your results.
Dave

 

[titrisol]

Use a wratten 89 / HOya 72 / SFX filter which is very deep red.
Since TTL will be useless, rate the film as EI 12 with a handheld or a decoupled meter.

Otherwise 1/60 at f/5.6 works most of the times.

 

[back alley]

why would ttl be useless? it worked for me with the red filter.
not enough light getting through the o92 filter?

 

[Xmas]

Joe

The TTL meter and the film spectral sensitivity would need to be similar, if they are different then using different filters would produce different effects. You would need to use a different EI for each filter and it (the exposure) might still vary dependent on the spectral distribution of the illuminating light.

Suggest you need to log results and bracket.

You could justify an M8 or RD1...

Noel

P.S. Sorry about the k9.

 

[markinlondon]

I'll agree with Noel on this ttl meter thing. The only SFX I ever shot had exposures all over the place, this was in a Pentax ME I trusted. I also gave up on the stuff because it didn't really look much different from HP5 with the same 025 red filter.

 

[Xmas]

Mark

It is not a real IR film, if you look at the Ilford data sheet, it is only a little more red sensitive that some of the other Ilford films like Delta 400 (or HP5).

Noel

 

[mw_uio]

Noel,

I have saw the specs on the Ilford site. I guess I am a little envy of this film and have only seen examples by way of the "infamous flickr" thus lusting for SFX. It seems that this a different animal and special attention is required with it, plus your filter selection. I still want to try it.

Mark
Quito, Ec

 

[titrisol]

Mark,
In Quito you can probably use it as EI 25, since the amount of both UV and IR are much higher
You'll need a wratten ultra deep red filter 89b, the 25 is not enough to show differences

PS> I'll be back in my town in december, for Xmas if you are around to have a Pilsener.

Noel,

I have saw the specs on the Ilford site. I guess I am a little envy of this film and have only seen examples by way of the "infamous flickr" thus lusting for SFX. It seems that this a different animal and special attention is required with it, plus your filter selection. I still want to try it.

Mark
Quito, Ec