Feb 28 2012

Worlds thinnest pancake lens.

I’m not a corporation so I think I can make a claim like that without the need to back it up, this is the Internet right?

Introducing the Wallalux 55mm (Mark I) pannenkoek lens in K-mount

Pancake Lens

Your awestruck right?  Recently Pentax announced the smc PENTAX-DA 40mm F2.8 XS, which may be the worlds thinnest interchangable lens, so I decided to see if I could beat that.  Granted my lens has a fixed aperature of about f8.0 and can’t actually be focused and it’s 55mmish focal length works out to about 82mm on an APSc camera.  So let me just recap here it’s an 82mm equivelent f8.0 fixed focus lens, but it is really thin.

Worlds thinnest pancake lens

Yes that’s 0.14 inches or 3.55mm thick, this is the amount of the lens that protrudes outside the camera, which is less than the 9.2mm of the Pentax lens

Worlds thinnest pancake lens on the Pentax K-7

But your probably wondering “Yes it’s thinner than a cracker but does it take better pictures?”  Well I’m here to tell you that taking pictures with a cracker is ridiculous (I will have to try that though) and that it does indeed work.  Keep in mind this is the Mark I version and by the time I get to the Mark IV it will be amazing with all the latest technology (we’re still on the Internet right?)   That or I will just build something else entirely which seems more likely.

 

Here are a couple sample images taken with the Wallalux 55mm (Mark I) pannenkoek lens, enjoy.

 

Any aberrations you see are likely caused by the rear element I am using to make the lens work with the K-mount registration distance, I’m hoping to replace that element in the Mark Ib.