Tag Archives: photography

Infrared Photography with an SD14

Figure 1An unexpected explosion of infrared on my dry erase board.

Is there such a thing as an infrared bomb?  I’m hard pressed to explain the picture in figure 1, one of the first infrared photos I’ve taken with the SD14.  I had just taken the shot in figure 2 (a photo of me looking like an infrared zombie) – and had gotten up to check the camera.  Without touching the tripod, I snapped off another shot of the dry erase board that hangs on the wall behind the chair I had just vacated.  The photo of figure 1 emerged as a result.

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Rare Earth Plates for Breakfast?

Figure  1-3 A plate from the 20s, 30s, 40s.

I love to use old (vintage) camera lenses for my photography, but tend to stay away from the oldest ones.  Up through the sixties,  and (for some lens companies) – into the seventies and beyond – lenses were sometimes made with radioactive glass.  When this glass was marketed, the term “rare earths” was sometimes used to imply a glass additive or lens coating that contained thorium.

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Monochromatic Filter Fun – the White Towel Test

Figure 1:  The White towel test on an orange filter

So, I take my walks in parks and on green-ways, and I notice the way people dress.  The women wear bright colors often, and the guys wear the drab and dreary: gray, faded blue, and white.  I guess that’s par for the species for various reasons we won’t delve into, but I had the fleeting thought that these fellows would not look very  much different if they were photographed in black and white, versus color.

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Graphics Software for Linux

Application ColorCorrection Video ARM Arch Paint Description
DarkTable Yes No Prelim/Devel only? Mask only? Photo edit – Strong CC
Gimp Yes As Animation Yes Yes Paint/Photo Edit
Inkscape Some No Yes Yes Vector Graphics
DaVinci * Yes Yes No No Film Finishing
Krita Yes As Animation Yes Yes Strong Drawing, Also photo edit
Blender Yes As MJPEG, others Yes Yes 2D/3D Drawing, Video edit
Lightworks* Yes Yes No Mask only? NLE for Video edit
Natron Yes Yes No ? Video clip ed, multi

Table 1: Some attributes of various linux graphics software entries ** 

Note that table 1 is not at all inclusive of every known graphics software project, but is an enumeration of a few projects that I am aware of and that have some substantial following of users. 

I won’t vouch for the absolute accuracy of the feature list, as I’ve used only one of these packages very intensively, and most of them not at all. I would advise to check out the features of the various projects, and make you own determination as to which may be a good choice to try. For the most part, the items are free, so there shouldn’t be much downside to a trial and error approach to this.

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Photography On the Cheap

Figure 1: The K5 is shown with a Tokina lens from the 1980s.

I started shooting with a bridge camera about two years ago (the FujiFilm s8600).   This was an attempt to bootstrap a photography interest of mine that had started in the early eighties (with an Olympus OM-1) – but which never managed to progress past the level of a novice, and hasn’t to this day.  There was always something more important to do, other than to teach myself to use a camera.  Now retired, I am devoting a lot of time to the task of catching up with the post millennium photography world.

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Easy-Simple IR Detector

Figure 1:  A very simple, cheeeep, IR detector for hobby photography

Posted 06-08-2018

A lot of hobby photographers are using IR cameras, or retrofitting common cameras to do IR photography. If the camera is a retrofit, then the photo hobbyist may not know the level of IR before a shot is taken.

This easy junk box build is a way to discover at least a ball-park guestimate of how much IR is present before a shot is taken.

The nice thing about this detector is that it uses a photodiode that reaches all the way down to 1.7 um (micro-meters) in the Near IR / Mid IR boundary area. Some newer cameras may be able to take photographs in that band.

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