FPCS7 Photography Workshop
Focus Stacking Station Images
Composite images for workshop participants have been emailed to the address you provided on the workshop scale bar that appears in your photos. If you participated in the workshop and did not receive your image zip file via email, please contact BJ Nicholls via firstname.lastname@example.org and provide your name and email address. If you have any questions about your images and the composite, please contact BJ for assistance.
Interpreting Your Focus Stacking Results
Most of the focus stacks were successful. Some stacks failed completely because the images were all focused in front of the specimen. Some stacks were partially successful because the steps between focusing changes were too wide, leaving soft focus gaps between the planes that were in focus. The image stacks were processed into composite images using Helicon Focus 6 software. Below are some cropped examples from processed image stacks.
Successful composite: The stack series was done with enough sharp focus intervals for a successful composite image (above).
Front focus: There were a few image stacks that indicate some participants had a difficult using the Nikon DSLR's viewfinder or the LCD to judge focusing. This is an example of a stack where the stack images were all taken in focus planes in front of the specimen. If you had problems seeing the areas in sharp focus, you may want to try a camera with a feature called "focus peaking". Focus peaking provides an LCD or electronic viewfinder (EVF) image of the subject with enhanced highlighting to the sharp areas of the subject. This feature makes it much easier to do precise focusing.
Gaps in focus: This is an example of a stack series where the planes of focus in the stack were too far apart, leaving soft image areas between sharp areas. The solution to this problem is to adjust focus in finer increments and take more images in the stack series.