Focus Free, modern box handling

[laverdure]

Just found a tiny plastic Focus-Free item which's features include 28mm lens, viewfinder, film advance, film rewind, and shutter release (bless it's heart). Sounds like it shoots at about 1/60th. Anyone know what sort of fstop they set these things at?

I suppose they operate on the principle that negative film can take massive overexposure, yes? With the Dof of a 28mm I'd expect they wouldn't need too small of an aperture, but maybe I'm on the wrong track?

My first toy camera! I feel a little giddy!

[nicolai]

Can you post a picture of the camera?

[Akki14]

No clue but it sounds like you'll be following the standard "ISO 100 film on bright sunny summer days and ISO 400 film for winter and overcast days" mantra that has become mine with my box cameras. I have a focus free camera but it allegedly has working apertures (they look a bit odd to me, squareish). with numbers on it.

[Bob F.]

Take a ruler and measure the aperture in mm as best you can through the lens. Then you can use N=f/D where N = the f-stop; f=focal length (28mm in this case); D = diameter of the aperture (in mm). This should get you close enough I'd have thought.

Cheers, Bob.

[laverdure]

Can't really take a picture, no, I have no d*gital camera

It's a Bell+Howell, anyway. Thanks Bob for the formula- looks like it's about f8 (~3.5mm).

Can't wait to see what it can do. Thanks again all.