This is the original photograph.
As a beginner myself, putting an IR filter in front of the lens is the way to go. I chose the 720nm wavelength because it allows "a small amount of colour leakage"; ie. the infrared is not the traditional high contrast B&W (true) infrared images.
With the filter on, do a custom white balance on some (sun)brightly-lit greenery; some leaves, patches of grass, etc.
It is important to use a tripod as the exposure can and probably would run into seconds (typically 1-5 seconds, ISO100, mid-morning or mid-afternoon sun).
Secondly, it is important to prefocus because the 720nm filter is very dark; literally "no" visible light passes through. * Live view would probably overcome this; I have yet to try *
The image captured with the 720nm filter in place would look something like this (sepia tone sky colour).
Check the RGB histogram; ensure that the RED channel is not over-exposed.
# Kindly note that not all DSLRs will be able to capture an in-camera white balance. As a rule of thumb, the older generations of DSLRs are more IR-friendly.
It is now time to post process.
Do the usual basic "Auto Levels" to add some spice to the image.
Now. Here comes the gizmos.
Open the “Channel Mixer” and swap the red and blue channels. IE, in the RED output channel, slide the ‘Red Source Channel lever’ from 100% to 0% and the ‘Blue Source Channel lever’ from 0% to 100%.
The sky after this step will take on a greenish tint.
Likewise, in the BLUE output channel, slide the ‘Blue Source Channel lever’ from 100% to 0% and the ‘RED source channel lever' from 0% to 100%.
Final 720 nm Image
All that is left now is some fine tuning. For some reason (see image ref. workflow #4), some of the foliage in my “converted NIR” has taken on a reddish/yellowish tint; probably due to an imperfect exposure on my part. I like my foliage to be snow white. I overcame this by reducing the ‘Saturation of the RED and YELLOW’ to an acceptable level.
Do some final fine tuning with levels and curves, or whatever suits your taste and ...... BINGO!
We have a NIR 720mm photograph!
* Check out the high resolution photograph at:
A BIG THANK YOU for spending some time reading 'my first story'.
Warm regards from the 'Tiny RED DOT'.