Unless you are content with a mere photoprint (which captures silhouettes of opaque objects and filtered images of translucent ones placed upon illuminated film), you also need an optical system for creating an image of the scene at the "film plane."

Typically, that optical system is coupled to a camera, which at a minimum allows film loading and unloading, and holds the film in such a way as to protect it from light except when the photograph is being taken.

I will . . .

We're very sorry, but this content is only available to current subscribers.

Perhaps you just need to log in.  If you're already logged in, please check if your subscription has expired by looking here.

If you're not already a subscriber you need to know that our columns and editorials are free, along with a few other items, but almost all stories and all downloads are paid only.

If you want to read the entire gazette, you need to either subscribe here, or purchase a download of any single issue at the Baen Books e-book store  or at Amazon.com.

- The Grantville Gazette Staff