Tuesday, May 11, 2021

Test of Wind Bracketing

In the last post I introduced the concept of wind bracketing. In this short post I show the results/advantage of wind bracketing.

Although anyone can accomplish wind bracketing through manual exposure control, I have automated this in the case of my Canon M3.

In the test I set the focus to capture a near field subject, a rather sad looking magnolia, and set the total infinity blur, accounting for diffraction, at 10 microns, ie I was focused beyond the hyperfocal, based on a CoC of 15 microns.

I decided I didn't need a sky bracket, ie the sun was behind me and single exposure would be OK. I did, however, set a wind bracket at 4Ev.

The ETTR exposure for the sky was: 1/30s, f/8 at ISO100. The script captured an additional wind bracket at 1/500s, f/8 at ISO1600. The two images looking like this:


The top image is the base exposure, ie the only one you would capture without wind bracketing. You can clearly see the wind induced movement in the magnolia.

The bottom image is the wind bracket: clearly showing, at 1/500s, I've dealt with the wind movement. Both these images have been processed with PureRAW.

In the next image we see the blended result from Photoshop. The blending being accomplished with simple masking.

In the final image, we see a Lightroom tweaked version of the above:

I must say, so far, I think wind bracketing is looking as if it may help in some of my landscape images, ie where there are near field objects that you wish to see sharp, eg with no wind driven blur, but you don't want to use a high ISO throughout the image, just in the areas that need it.

As usual I welcome any feedback on this post or any of my posts.

No comments:

Post a Comment