I posted a writeup on magnification the other day where I defined what magnification is in our world of photography and showcased a diptych with 1x and 5x images of a pencil. For kicks, I thought it would be fun to show you what 10x looks like. I really don’t have the equipment to do a good job at this level but here are some things to note when going from 1x to 5x to 10x.
Depth of Field: The DOF is more challenged with the higher magnification so more images are needed in order to get the entire subject in focus. For the 1x I took 3 photos, 6 for the 5x and 12 for the 10x. The DOF for the 1x was 0.9 mm, 0.1 mm for the 5x and 0.02 mm for the 10x.
Light Requirements: Higher magnifications require more light. I set the aperture at f/6.3 for all three magnifications and I used the same LED lighting configuration. The 1x shutter was set at 1/10th of a second, the 5x shutter was set at 2.5 seconds and the 10x was set at 6 seconds. As you can see, the lighting requirements increased significantly as the magnification increased.
Field of View: The field of view of a 1x image is 24 x 36mm, compared to a field of view of a 5x at 4.8 x 7.2 mm and 10x at 2.4 x 3.6mm.
As you can see, looking at every-day objects in high magnification can provide a different and interesting perspective.
This image was taken with my Canon EOS 5D Mark III using my Canon MP-E 65mm f/2.8 1-5x Macro Lens set on 65 mm. The camera was set on Manual mode with the aperture set at f/6.3, shutter speed at 6 seconds and the ISO set at 100. I took a total of 12 images and used Helicon Focus to focus stack the images into a single image.
Let me know if you can think of any common, every-day objects that you would like to see at high magnification. I may take it on as a challenge and post the results on my blog.
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