Fuji X-a1 with Jupiter-11 135mm, f4 and IR720nm filter
40.5-52mm adaptor, 52mm IR 720nm filter

Unconverted Fuji x-a1 with Jupiter-11 and IR720 filter

At 135mm f4 the Jupiter-11 is not a lens most people would think of, but it can be fun to try such a telephoto for some interesting infrared results.  The Jupiter-11 has no discernible IR hot spots.  A hot spot is the centre circle of over exposure you get in infrared with many lenses due to the way the infrared light bounces around and focuses inside the lens.

With an unconverted (off the shelf) camera you are going to want to use a tripod most of the time, at the largest aperture of f4 at ISO200 you get around 2-5 second exposures, which can make for some great motion blur, clouds or water.  You will want to use the 2 second timer just to prevent camera shake.  The Fuji x-a1 is extremely clean when using long exposures (as are all the Fuji X cameras) and is well suited to IR.

fuji x-a1, jupiter-11, 5 second exposure

fuji x-a1, jupiter-11, 5 second exposure

Hand holdable shots are also possible at f4 in full sun at ISO3200 if you have a steady hand.  I generally set the camera to motor drive hold my breath and shoot 10 or 12 images in succession, you get a couple of sharp ones.  The below image was taken at 1/13th of a second.

hand held infrared, ISO3200 fuji x-a1, jupiter-11, IR720, 1/13th second

hand held infrared, ISO3200 fuji x-a1, jupiter-11, IR720, 1/13th second

I have also been experimenting with Hugin Panorama Stitch with is a free program which combine multiple images.  It works fine with infrared and if you already have the camera on a tripod it’s no big deal.  Just put a bit a bit of overlap in between shots.  Once the 4 images were stitched together I loaded the result in to GIMP to do the Red and Blue colour swap, the X-a1 produces some nice colour separation in infrared, which means you are not limited to black and white.

fuji x-a1, jupiter-11, ir720, 4 image hugin stitch

fuji x-a1, jupiter-11, ir720, 4 image hugin stitch

Technical details
Camera – Fuji X-a1 bayer CFA
Lens – Jupiter-11 135mm f4, LTM39 mount
Lens Adaptor – Fotasy L39-FX
Filter Adaptor – 40.5mm to 52mm (only used because most of my filters are 52mm)
Filter – 52mm IR720 (no name $13 filter)
Tripod mount/Grip – LB-XM1 (after market grip which allows access to memory card and battery)

OLYMPUS DIGITAL CAMERA

Fuji X100 infrared compared to Converted Olympus E-PM1

Just for fun I thought I would compare my IR converted E-PM1 with my Fuji X100, both with an IR720nm filter.  The E-PM1 has the IR blocking filter removed so shooting hand held at any f-stop is no problem.  The fuji is off the shelf but is still good for hand held IR shots at f2 and ISO1600.  At those settings the Fuji X100 shutter speed is normally around 1/30th of a second, which is completely fine for hand held as long as you’re careful.

All the images have been processed in GIMP, if anyone is interested there is a tutorial here -> https://www.youtube.com/watch?v=jlQ0qDpMktI

The gear used;

Converted Olympus E-PM1 (IR hot filter removed)
Olympus 9-18mm lens (almost no hot spot, great for IR)
ISO 200

Fuji X100 (standard off the shelf)
23mm f2
ISO 1600

Black and white images first
Olympus E-PM1 image on top, Fuji X100 image below

1 Bed lake side processed bw EPM1
2 Bed lake side processed bw FUJI

9 Tree lake front processed BW EPM1
10 Tree lake front processed BW FUJI

Colour processed images of the same scene, E-PM1 (top) and Fuji (below)

11 Tree lake front processed EPM1
12 Tree lake front processed FUJI

A close up scene to show the difference in depth of field.  The Fuji really deals well with lens flare in this situation, the Oly less so, but of course it’s art.   E-PM1 at f5.6 (top) and the Fuji being at f2 (below)

5 Scales processed EPM1
6 Scales processed FUJI

The E-PM1 tends to have more subtle colours, with the Fuji being more bold, the processing used is not exactly the same as the files are quite different, but I tried to make them similar.  E-PM1 (top) and Fuji (below)

7 Tree processed EPM1
8 Tree processed FUJI

3 Boat processed EPM1
4 Boat processed FUJI

Fuji X100

Fuji X100 hand held infrared (unmodified standard camera)

It has been a real delight to find out just how good the X100 is for Infrared, it’s a combination of having a virtually hot spot free lens, and clean files up to ISO1600.
The shutter speeds in full sun with an IR720nm filter at ISO1600 tend to be around 1/30th of a second which is hand holdable this lens, just make sure you take a few shots of the same scene in case on or two end up with motion shake.

The below image is an Out of Camera JPG with the following settings;

  • Infrared 720nm filter
  • Black and White
  • ISO1600
  • DR400
  • Shadow Tone – Hard
  • Highlight Tone – Normal

Lilly

All the images below have the same settings as above, but a little contrast and curve adjustment in post processing (GIMP).

Lilly

cane field road line

cane field

tractor

Palm Road and truck

Gallery

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