Infrared photography (analog)

© 2019:  Stefan M. Bruehlmann-Fujii  (Switzerland)  -   17 July 2019

 

Film:                             ILFORD SFX ISO 200

Camera:                       OLYMPUS OM-1          

Lens:                            OM 24mm (f.2.8)

Filter :                          HOYA 72R

Tripod :                        Velbon Sherpa

Condition :                   full sunlight ; (July 2019 ;  afternoon)

 

Film development:        ILFORD Ilfosol3  (6 Min)

                                   TETENAL SUPERFIX (7 Min)
                                   TETENAL Mirasol (1 Min)

 

Remarks :  These  are the results of a first trial with the IR-Film ILFORD SFX 200

Own film development with JOBO equipment.  Hybrid mode:  Scanning with EPSON V300 PHOTO,  no post-treatment

 

Measured exposure (without filter):   1/250 sec  - f16

 

With the Hoya 72R filter mounted,  it it suggested to open up 4 stops of aperture to achieve a correct exposure.  From there, several variations (bracketing) were  done:

 

Speed:  1/250 sec

 

 

f 2.8  (-5stops)

f4  (-4 stops)

f5.6 (-3 stops)

Remarks:  Mounted lens hood  led to vignetting  in the corners

 

 

 

 

 

 

Aperture: f16

 

 

Speed  1/8

Speed 1/15

Speed 1/30

Remarks:  Mounted lens hood  led to vignetting in the corners

 

 

 

 

 

 

 

 

 

 

 

Speed:  1/60 sec

 

 

f2.8

f4

f5.6

Remarks:  Mounted lens hood  led to vignetting in the corners

 

 

 

 

 

 

 

 

 

 

 

Aperture: f16

 

 

Speed 1/2

Speed 1/4

Speed 1/8

Remarks:  Mounted lens hood  led vignetting in the corners;    Speed 1/2 and 1/4  produces over-exposed image

 

 

 

 

 

 

 

 

 

Speed:  1/1000 sec

 

 

f2.8

f4

f5.6

Remarks:  no mounted lens hood;   images under-exposed;  EPSON scanner could not recognize the image with f5.6 because of too little contrast;  therefore manual marks with felt-pen were applied.

 

 

 

 

 

 

 

 

 

 

Aperture: f16

 

 

 

Speed 1/30

Speed 1/60

Speed 1/125

Remarks:  no mounted lens hood;  all  images rather  underexposed

 

 

 

 

 

 

 

 

 

Speed 1/125 sec

 

 

f2.8

F4

F5.6

Remarks:  no mounted lens hood

 

 

 

 

 

 

 

 

 

 

 

Aperture: f16

 

 

Speed 1/4

Speed 1/8

Speed 1/15

Remarks:  no mounted lens hood

 

 

 

 

 

 

 

 

 

 

 

Aperture: f4

 

 

Speed 1/30

Speed 160

Speed 1/125

Remarks:  no mounted lens hood

 

 

 

 

 

 

 

 

 

 

 

Aperture: f2.8

 

 

Speed 1/30

Speed 160

Speed 1/125

Remarks:  no mounted lens hood

 

 

 

 

 

 

 

 

 

 

 

Aperture: f5.6

 

 

Speed 1/2

Speed 1/4

Speed 1/8

Remarks:  no mounted lens hood;  overexposed, strong grain

 

 

 

 

 

 

 

 

 

 

 

Speed 4 sec

Speed 6 sec

 

 

f5.6

f5.6

 

Remarks:  no mounted lens hood;  results are useless, strong grain

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Summary:   The best results are achieved by following the 4 stop rule.  (correction of 4 stops from the measurement without the IR-filter).  The aperture itself does not seem to have much impact on the grain.

Overexposure – however – produces strong grain.  Overall, the IR-effect (white foliage etc.) does not look very distinct.  One reason could be that the scenery of this tests did not provide many trees with young foliage.

 

Feedback:  photo@dentaku.ch

 

 

 

Return