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

 

 

 

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