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Film Comparison:

 

The following tests were done on December 20, 2005 In Daytona Beach, FL

 

For the following tests the three rolls of film were processed in a Kodak Versamat model 1140 with a developer temp of 90*F and run at 1 developer tank and 12.5 Feet Per Minute.  The exposures were all done in a series of each film type one after the other.  The 2424 (Kodak B&W IR) was shot about an hour later because we tried to utilize one roll of 35mm in 1/2 of the Hasselblad 70mm back and the film came loose after the 4th exposure.  When we re-shot the series about an hour later we used two 35mm rolls taped together in several locations on the front and rear of the film so you will see finger prints and weird marks where the two rolls were joined together but they served well for the purpose of our test.

 

NO FILTER

The images in this box were exposed with a Hasselblad with an 80mm lens.  The BEST exposure taken is listed on each image.

Color Infrared Image to Follow!

All in all the three B&W films seem to be fairly close in exposure which is not what I anticipated.  The Maco IR film gives you a result that is extremely similar to Plus-X with no filtration.

 

Wratten 12 Filter

The three images in this box were exposed with a Hasselblad with an 80mm lens.  The BEST exposure taken is listed on each image.

Again the film speeds seem to fall fairly close to each other.  The Kodak IR 2424 may be a little better with an exposure of about 1 stop faster (f16 @ 1/500th).  You can see the most of the infrared effects on the 2424 then on the other two though you are definitely getting the infrared aspects shown in the Maco film though the scan does not show it so well.

 

Red Filter

The three images in this box were exposed with a Hasselblad with an 80mm lens.  The BEST exposure taken is listed on each image.

Color Infrared Image to Follow!

Here is when the Kodak film is starting to show a speed advantage.  The Kodak IR 2424 needed to be exposed at least 1 stop (if not two stops) faster.  This is purely due to the higher infrared cut off, with my test the next time I would start at f16 @ 1/125th.  You can see the most of the infrared effects on the 2424 then on the other two though you are definitely getting the infrared aspects shown in the Maco film though the scan does not show it so well.

 

Hoya R72 Filter (only shows over 720nm)

The three images in this box were exposed with a Hasselblad with an 80mm lens.  The BEST exposure taken is listed on each image.

Here is when the Kodak film really shows a true speed advantage.  The 720 nm filter is basically an opaque filter.  The Kodak IR 2424 needed to be exposed at least 4 stop faster seemingly no difference in speed then if shooting with the red filter.  This is purely due to the higher infrared cut off. 

 

Here is a overall summary of the films above:

Film Type

Wavelength

Cut Off

No Filter

W-12

Red

Hoya R72

Grain @ 12x

General

Kodak Plus-X - 2402

about 720nm

f-22 @ 1/500th

f-16 @ 1/250th

f-16 @ 1/60th

No Usable

Very good detail

Extremely good overall film.  Not made to reach into infrared range as shown in the R72 test.

Kodak B&W IR - 2424

760-880nm

F-16 @ 1/500th

f-16 @ 1/250th

f-16 @ 1/125th (or 1/250th)

f-16 @ 1/125th

Good detail but grainy

Great film for special effects and to see things you may not with other films. Also very fast!

Maco IR 400

820nm

f-11 @ 1/500th

f-16 @ 1/250th

f-16 @ 1/60th

suggest

f-4.0 @ 1/15th

Very good detail

At all levels this film gives consistent grain results and image detail.  The film is a little slow on the Hoya R72 filter but the grain increase may be a very worthwhile trade off.  If this were to be used as an aerial film with the W12 or Red filter it would do very well.

Kodak CIR 1443 - Neg

900nm