Posted Friday, March 30, 2012
License: CC-BY-NC-SA (What does this mean?)



Coolangatta, Gold Coast
General location: Australia, South-East Queensland

The Setup:

This is a 4 minute exposure using the the infrared and polarising filter stacked together (for darkest sky).

I have been experimenting with a hack for my camera (400plus - It has a few features like extended exposure bracketing (9 shot), with any length of exposure (instead of the 30 second maximum). It didn't work as I expected it to, but it did go straight to the maximum exposure that I set. I'm sure I just need to read the manual again.

The camera & lens:

Filters: Near-infrared (580nm), Polariser

Post processing:

The GIMP -

  1. Imported to GIMP and used auto-levels
  2. (I had intended to do a colour swap, but it didn't look as good as the red version)
Lightroom 4 -
  1. Imported to Lightroom
  2. Presence: Blacks +100, clarity +60
  3. Curves: lights +15, darks -25
  4. Noise reduction: luminance +50, colour +100 (while ISO was set to 100 for minimum noise from signal amplification, the long exposure created different noise from sensor heat)
  5. Spot removal - to clone out some hot pixels
  6. ACR lens profile correction for EF-S 18-55 lens

The wash-up:

It still eludes me how to get a completely dark sky but it seems to have worked alright.

What would you do?

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Related Images:

4 Responses to “Infrared Eagle Sculpture”

  1. Al Warren

    Dude am I reading that right, you hacked your 400D? How does it go now? 9-shot bracketing sounds way cool. Nice pic, too…as soon as I get a bit of money I'm going to get me some of those IR filters too.

  2. Al Warren

    Okay I just read the link…HOLY FRACKEN FRACK! That's brilliant! On the hunt now for firmware hacks for my Slownies.

  3. Sheridan Tighe

    I'm sure they exist! The IR filter was really cheap from HK. The 400plus hack is awesome, though it can be a bit inscrutable – can't tell what it's doing while it's doing it. Not complaining though, it's great to have.


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