Originally posted by WPRESTO Tokina 90mm f2.5 macro, the oldest lens of mine that is still in use.
Nice image, Walt!
---------- Post added 06-17-19 at 11:35 PM ----------
Butterfly Weed.
Got a Chinese Zhong Yi Freewalker 4-4.5x F2 macro from B&H around Christmas time. DOF is quite shallow. Most people (including me) will not get much in the line of usable images unless they focus stack.
This is one of the first stacks taken with the lens. Unfortunately I did not record the aperture value. Probably at 5.6 to 8. The manual recommends taking images at f2. This was taken at 4x on the K-1. Approximately 70 images. To really get a sharp image, one needs an automated rig. This is at the limit of what I can do with hand adjusted macro rail, so take that into account when you look at the image.
The second image (crop) is of a different butterfly weed flower with an ant approximately one-half cm long.
The third image is of the same flower as the first image, and shows what happens when an ant photo-bombs (ruins) my stack!
I knew I had a few dust spots. But not the extent of it. High Magnification lenses will highlight every single dust spot, and leave bad trails when stacked. I opened the stack in camera raw, healed 30-40 spots, synchronized spot removal, saved the stack then re-assembled in Zerene Stacker. I missed one spot that I had to clone out later.
Butterfly Weed Ant on Butterfly Weed Butterfly weed with photo-bomber