please share your ir photo technique

Started Jan 31, 2004 | Discussions thread
Lynn Towns Senior Member • Posts: 1,111
Here is my IR procedure

I put together this IR procedure about a year ago for my F707. I don't do IR often enough to remember everything. I didn't develop any of these points...I just made the summary. The points were all taken from various posts here on STF. Today, I updated the procedure for my new F828 (I still own the F707). If anyone notices anything that is incorrect, I would appreciate feedback. Knowing STF, that probably shouldn't be a concern of mine!

Lynn

Infrared Photography with the Sony DSC-F7X7 and DSC-F828 Cameras:

Set-up:
• Cover Infrared Rays emitters (F7X7 – not required on the F828)
• Set the camera to Nightshot mode
• Set mode dial to Auto (the position with the green colored picture of a
camera) for the F707, or P (Programmed Auto) for the F717 or F828. DO
NOT use the fully auto setting on the F-717 OR F-828…that setting uses
Auto ISO.
• Set ISO to the lowest available (100 for F7X7, 64 for F828) to get the
least noise. DO NOT USE AUTO ISO. Higher ISO DOES NOT result in
shutter speeds faster than 1/60th or 1/30th second with Nightshot
mode…just a higher noise level.
• Set EV to 0 for correct exposure of most shots
• Attach an Infrared pass filter and ND filters to suit

In the Nightshot mode, the camera sets to the widest aperture (a fixed f/2.0-2.8), and the shutter has a maximum speed of 1/60th second (F7X7), or 1/30th second (F828). For a correct exposure range, the total amount of light must be controlled by the use of ND filters.
• Bright sunny days require an ND8X filter (3 stops). This is the usual filter.
• On dim days, or for photos in shade use an ND4X (2 stops), or perhaps
even an ND2X (1 stop).
• The number of stops is additive, and a polarizer is equivalent to an ND4X
(2 stops).
• Also, don’t forget the possibilities of a graduated ND filter for shots with
extreme dynamic range.

To select the level of ND filter, keep going up to a higher level of ND until the shutter speed just drops below the 1/60th second or 1/30th second maximum (depending on the camera model). Otherwise the photo will be overexposed. Remember to stay near the maximum shutter speed, especially for hand held shots.

At the fixed f/2.0-2.8 aperture, the depth of field will be at a minimum, especially when using the lens at a telephoto setting.

In Nightshot mode, the camera’s metering pattern is center-weighted averaging.

Other features that still work when in Nightshot mode:
• Macro mode
• Sepia tone
• Exposure bracketing (F7X7)
• Burst mode (F7X7)

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bm8
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