Ole, have you noticed that when using an orange filter with Efke 25, you get a different tone in the sky all the same, rather than using a truly pan-chromatic emulsion? I know that the filter factor will be higher, but is that really the only difference? I would imagine that you could darken a blue sky significantly since you're blocking those wavelengths quite effectively, but I've never really looked for the effect.
Thank you for correcting me, by the way. Ortho-pan-chromatic from now on...
"Often moments come looking for us". - Robert Frank
"Make good art!" - Neil Gaiman
"...the heart and mind are the true lens of the camera". - Yousuf Karsh
Yes, the tones really are different, just as the tones are different between high-and low-red-sensitivity films and high- and low-blue-sensitivity films!
All films are not created equal, and some (FP4+ for example) have a lowered sensitivity to blue compared to some other films. And there was Tech. Pan which had increased red sensitivity, and various surveillance, aerial and IR films with extended red sensitivity (into the IR range) and so on...
Efke 25 with an orange filter will only see yellow and orange, so you get a pretty monochromatic look at things. With a panchromatic film you get red too, which makes quite a difference.
Different filters do different things to different films, so trial and error is the only way I've found to learn what the result might be.
-- Ole Tjugen, Luddite Elitist
I would avoid Efke films. At one I was a big fan and then I began to notice very odd banding in the film. it is especially noticeable on smooth tonalities (skies, asphalt, grass, anywhere you have similar tones covering a majority of the image. Plus Efke 25 and 50 are orthochromatic, where pan F is pan chromatic. In other words Those two Efke films are not sensitive to reds. which means the excessive sensitivity to blue often leads to "bullet proof" skies, and other items that are blue. Red filters produce a horribly flat images, and require a filter factor of about 8 in order to get a printable neg. Efke films also scratch very easily. one good thing about efke is that it pushes very well. If you are going to use Efke i would recommend their 100 speed film, its pan chromatic.
in 4x5 films I would have to recommend Bergger bfp200. This film is great, but expensive. I have that when coupled with ABC pyro it produce prints that really exceptional. This film dosen't push as well as Efke, but the over quality is much higher.
Currently I shoot Ilford fp4 which is in the middle as far as price is concerned, and prints better then both Efke and Bergger. When it comes to pushing the film Ilford is wretched!!! It seems as though after fifteen minutes no more development occurs, and stain begins to increase very rapidly (with ABC Pyro).
I found this out through experimentation with my personal "system." If I were you I would buy a box of all films your interested in and try them. You may find that all of us wrong and "Lucky" (the Chinese brand) is the best film for you. try 'em out and tell us what you think. Your opinion is by far the most important when it comes to your work.
Jan, I develop for 16 minutes at 72 degrees F 2:2:100 with semi stand agitation
Originally Posted by JLP
Everything is analog - even digital :D
"In other words Those two Efke films are not sensitive to reds." Chris, not exactly sure where this statement comes from.
Efke 25 is an ortho-panchromatic film (not very sensative to red), while Efke 100 is more of a straight panchromatic film.
There have been issues with the Efke films, as you have mentioned, but I have found them to be reliable in their spectral response. There have been a few QC issues over the years, but I think you will find that Efke films have a pretty good following amoung the folks of apug. Since the original question was about Efke products in general, I think the original poster would be well served to at least try the 25 & 50 just to draw his own conclusions. tim
P.S. Efke 25 / 35mm
Last edited by noseoil; 09-16-2007 at 09:38 AM. Click to view previous post history.
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Thanks all for help!
I think I'll get a box of Efke 50 and also some Ilford FP4. I think that even if in the end I don't stick to Efke, pricewise it sounds like a good film for experimenting as I'm just starting with 4x5.
I used to shoot FP4 in 35mm before changing to PanF, but never tried it in medium format as I don't like it as much as PanF. With PanF out of the equation it will probably be a safe bet and I guess the grain won't be an issue in 4x5...
Thanks Tom, That's quite a potent dilution. Will have to make some testing since i need to use continuous agitation on my 5x7 negs. Do use minimal agitation for 4x5 though.
Originally Posted by noseoil
I read "those two" to refer to EFKE 25 and 50, both of which are orthopanchromatic. EFKE 100 is, as you correctly stated, panchromatic.
-- Ole Tjugen, Luddite Elitist
I always like Efke/Adox 50 rollfilm in the studio. I like the tone and it has an unusually small reciprocity failure effect which makes it nice for those long exposures.
That is called grain. It is supposed to be there.
I have no experience of Efke 50 but when I compared Efke 100 with FP4 in 5 x 4 format, I found the FP4 to be significantly sharper- enough to notice the difference on a 10 x 8 inch print.