Due to limitations in depth of field and resolution, making sharply focused images of rounded small insects can be very difficult. The best resolution of a lens will be achieved by stopping down 2 f/stops from wide open. At this setting though, depth of field is not very great, leading to images with one plane of the subject in focus and everything else blurry. To overcome this limitation, I take several exposures of the specimen focusing at different depths and then combine the sharp areas from each picture into one composite image. A detailed description of this process can be found in the Photo Tips section.