Tag Archives: functionality

Focus Stacking With The Camera’s Help

One of the functions that my new camera has built in is a focus stacking function.  I know this is not unique to this camera but it is a first for me so I was keen to play with it.  The mode, when enabled, allows you to set how many shots you want taken and set a scale for how close the focus points will be to each other.  You then pick you initial focus point and set it off and it takes the sequence of shots incrementing the focus slightly between each one.

The resulting stack of images can then be processed in Photoshop to get the focus stacked output.  This is so much nicer than making minor focus adjustments by hand between shots.  The sequence gets created really quickly.  I also was able to do reshoots easily.  On one of the sequences, I had left it on auto ISO so it shot at a really high ISO level.  I could reshoot with the ISO set low (tripod mounting means this was not a problem) in no time at all.  (As an aside, the focus stacking algorithm actually seems to do a good job of reducing noise as well.)

I experimented with how fine a scale to use.  Initially, I was taking way too many shots with very little movement through the image so I coarsened up the scale a bit.  The nice thing was, if it didn’t go all through the range, I could just hit the shutter again and it would keep going.  Photoshop chunked through the processing pretty well.  I was shooting a few things but also experimented with some coins on my desk.  Not the most original subject but one that shows the result well unlike the other things I was shooting.  The software seemed to struggle a little on some of the coin edges so maybe a finer shoot next time or maybe I should just hand blend those bits.