Boundaries and Depth Of Field

I recently got a digital stereoscope. Not a digital microscope, this one is more for seeing microscopic items in upright orientation. That is, up is up, and left is left as you see it in a stereoscope, unlike traditional microscopes. Same principle applies for telescopes (inverted images) and binoculars (upright images).

Anyway, one of the more subtle drawbacks of using a digital stereoscope as opposed to a really powerful macro lens on you camera is the lack of F-stop adjustments. That means that you as a photographer will be constrained more than you would like in depth of field.

In this photo of the edge of a leaf, I think it works pretty well with the dark open space below, and the leaf veins fading out of focus above. Generally though, I see you really have to work with the narrow depth of field with a stereoscope.

And as mentioned above, the same thing exists in the world of telescopes. We usually use astronomical telescopes without stopping down the aperture. Combined with the fact that most astronomical objects are at infinity, we usually don’t even consider depth of field for astrophotography.

I’m planning on writing a blog to more fully discuss the differences between optics for photography and astronomy soon!

About Pgibson

I'm from Huntsville, Alabama where I work as a Software Engineer and part-time banjo instructor. My wife Miiko and I worship at Rivertree Downtown. I've been playing various instruments since my teen years. I started mandolin and dulcimer at about age 17 and banjo at 20. I love just about all kinds of music. In terms of banjo styles, I play and teach Scruggs, melodic, clawhammer, and 2-finger styles. I'm also very keen on theology, being a Trail Care Partner with the Land Trust of North Alabama, photography, urban planning, architecture, astronomy, ATM (amateur telescope making), birding, martial arts, and about 30 other distracting hobbies to a (mercifully) lesser extent.
This entry was posted in Astrophotography, Botanical, Optics, Photoblog, Uncategorized and tagged , , . Bookmark the permalink.

4 Responses to Boundaries and Depth Of Field

  1. Amy says:

    Great shot, Phill! Thank you for sharing!

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