Upon locating these intriguingly-curved aspen trees in the San Juan Mountains near Ophir, CO (south of Telluride), I had hours of entertainment before me. Aspen tree trunks are beautiful and their fall leaf color is amazing. With the numerous curving trunk shapes (likely caused by an avalanche when the trees were younger), there were seemingly endless angles and perspectives to use for images here. Helping was that the lighting/weather was constantly changing, ranging from snowing to sun shining bright enough to create shadows with subsequent images appearing different without even moving the camera. It was perfect.
I have many hundreds of images to choose from (I'll likely share more). Many of them were captured with a wide angle zoom lens, but this particular perspective seemed ideal for 50mm and I happened to have the Canon RF 50mm f/1.2L USM Lens in the MindShift Gear FirstLight 30L backpack I was carrying. I originally thought this image was captured with that lens, but ... this happened to be the last image taken with the Canon RF 24-105mm f/4L IS USM Lens prior to mounting the RF 50.
Using a "standard" or "normal" focal length makes keeping both very close and very distant subjects in sharp focus a challenge, even at f/16. For this image, I focused on the foreground trees for one frame and on the background trees for a second frame. For a simple focus stacking technique, I loaded the two images as layers in Photoshop and used a layer mask to determine which image the foreground trees were showing from.