Explains the purpose of stacking teleconverters and how to calculating focal length, aperture, and aperture diameter.

The Canon BG-E1 Vertical Battery Grip is an accessory for the Canon EOS Digital Rebel SLR camera. It serves two purposes: 1) it allows two batteries to be ...

I am trying to remote control my Canon EOS Elan 7e with a remote control software on Sony Clie PDA. Software is Clie RMC and I need the correct device ID and ...

So I've been thinking of alternative power sources, rather than buying more BP-511 battery packs. One such alternative source is the R/C battery packs. However, ...

This article shows you how to hack your digital SLR camera to draw power from a RC battery pack. Why would you want to do something like this?

A nice thing about this cheap lens is that it has a non-rotating front. I don't find this feature in many low-price lenses. The front filter thread takes 52mm ...

This equipment connects the digital camera body to the Canon Compact Power Adapter CA-PS400 (the dual BP-511 battery charger), which then connects to the AC ...

Yes, you can trick the Canon IX to double exposure. The procedure is tedious. Say you want double exposure on frame 5. Adjust the ISO setting of the film as ...

Do you know why traditional film 35mm cameras (SLR and point-n-shoot) all look very similar to each other? See, with traditional 35mm film cameras, ...

I have a few ideas on what to do with this battery pack. I could 1) rebuild it with new battery cells; or 2) turn it into a dummy battery interface so I can use ...