I am learning to take macro images using
Nikor 105 mm macro lens and
D750 body. The below images were shot using the same gears. The spider and the fly are about an inch in length. I shot them in the 1:1 magnification with the closest focal distance of 6 inches.
Is there any way to shot sharper images/images with more details? I am using f/20 and shutter speed of 1/160 with built-in flash and a self-made paper diffuser.