In a previous post I discussed the addition of sky or infinity bracketing in the Canon M3, ie at the end of a deep focus bracket, based on the logic that in a landscape the sky will be the brightest object and that this doesn't need focus bracketing, ie it will be at 'infinity'.
In this post I'll discuss the latest M3 Bracketing script's updates and provide an example of using the script.
The latest version of M3 Brackets may be downloaded from the link on the right. This version has the following new features:
- Sky or Infinity bracketing may be undertaken at either 3, 4 or 5Ev, relative to the land or foreground, ie this feature may also be useful for real estate photography where one needs to exposure for inside as well as outside.
- You can now switch on a simple logging feature, eg to record the focus distances of your focus bracket set. Logging is either on or off. Logging is recorded/appended to a single file 0001.txt in the CHDK log folder. You can reset the log file, ie delete the contents, from the M3 Brackets log menu. Once you have reset the log file you will need to (re)select your logging option before using the script.
- M3 Brackets, once initiated via a CHDK full shutter press, will pause and tell you how many focus brackets will be taken. At this point you can terminate the script with a full shutter press, or continue with the script with a half shutter press.
- Finally, a word on M3 and CHDK. To eliminate the CHDK screen flashing, simply cycle through the Canon INFO button until things stabilise, eg histogram not showing.
Start @ 150mm
2/11 @ 157mm
3/11 @ 167mm
4/11 @ 179mm
5/11 @ 196mm
6/11 @ 219mm
7/11 @ 253mm
8/11 @ 306mm
9/11 @ 404mm
10/11 @ 640mm
@H = 164cm
@4H = 658cm
Here we see the script's bookend feature, which creates a dark frame at the start and end of the capture.