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a collection of photos by Eric Chesak

www.ericchesak.com

  1. Galleries
  2. Infrared

Filter Tests

Read More
B&W converted color shot - with Clouds - 30D
- Shot within 5 minutes of IR40D B&W conversion
15 / 19

B&W converted color shot - with Clouds - 30D - Shot within 5 minutes of IR40D B&W conversion

  • No Filter+ Full Spectrum Canon 300D<br />
EF24-70 f2.8L @24mm<br />
1/4000<br />
F8.0<br />
ISO 100<br />
<br />
CRW_0027-No-Filter
  • 720nm filter+ Full Spectrum Canon 300D<br />
EF24-70 f2.8L @24mm<br />
1/200<br />
F8.0<br />
ISO400<br />
<br />
CRW_0012-720nm
  • 850nm Filter + Full Spectrum Canon 300D<br />
EF24-70 f2.8L @24mm<br />
1/320<br />
f8.0<br />
ISO400<br />
<br />
CRW_0018-850
  • 950nm Filter + Full Spectrum Canon 300D<br />
EF24-70 f2.8L @24mm<br />
1/25<br />
f8.0<br />
ISO400<br />
<br />
CRW_0022-950nm
  • HD (1920 x 1280) - Animated GIF of 3 IR filters (720nm, 850nm and 950nm)3-Filter animated gif - To view animated image click the image, then click the rectangular box, on the lower RHS and choose "Original" from menu. It's ~3MB, so the 3 frames will take a minute to load.
  • Smaller version of the 3 filter animated gif. (1280 x 850) - Animated GIF of 3 IR filters (720nm, 850nm and 950nm)3-Filter animated GIF.  Each frame was referenced to the same black point.  All were opened in Adobe Camera Raw and had the same adjustments. <br />
<br />
To view animation, click the image.<br />
<br />
Each frame was shot with a full spectrum Canon 40D and an EF24-70 f2.8 lens with exposures as follows (all exposed to mid histogram):<br />
<br />
720nm - 24mm, ISO 100, 1/50 s, f11<br />
850nm - 24mm, ISO 100,  1/20s, f11<br />
950nm - 24mm, ISO 100,  1/2 s, f11
  • 900nm-f5_6<br />
<br />
One frame of the many used to gather the data on the spreadsheeet.  This particular frame was shot at 900nm @ f5.6.  It was illuminated by an Tungsten/incandescent lamp (best for IR).
  • Filter Resolution Tests
  • _MG_9278-Optek<br />
<br />
Test Shot & quick grey-scale post-process, to compare the 77mm Lens-front Optek 720nm filter to the Astronomik Pro-Planet 742nm filter. No white balance adjustment was performed on this image.
  • _MG_9281-Proplanet<br />
<br />
Test Shot & quick grey-scale post-process, to compare the 77mm Lens-front Optek 720nm filter to the Astronomik Pro-Planet 742nm filter. No white balance adjustment was performed on this image.
  • 395-400nm UV LEDs shot with a Canon 7D and EF24-70 f2.8L
  • 395-400nm LED's, shot with a full spectrum Canon 40D and EF24-70 f2.8L
  • B&W converted color shot - Clear Skies - Canon 7D
  • B&amp;W converted IR shot - Clear Skies -full-spectrum Canon 40D with 720nm IR filter installed.
  • B&amp;W converted color shot - with Clouds - 30D
- Shot within 5 minutes of IR40D B&amp;W conversion
  • B&amp;W converted IR shot with Clouds - IR 40D with 720nm IR filter installed.
- Shot within 5 minutes of 30D B&amp;W conversion
  • 807nm Filter Comparison with and without UV Filter
  • 742nm Filter Comparison with and without UV Filter
  • 700 & 800nm filter comparison
  • No Comments
Unless otherwise noted, all Photos, Images and Videos are Copyright C. Eric Chesak
Unauthorized use is prohibited

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