How to build your own 500mm f/4 lens

[mjs1973]

You might not have all the equipment laying around the house to do this yourself, but it's pretty interesting. Click on the Enter button.

http://aux1.jp.canon.com/com/camera-...ant/index.html

[SmartWombat]

You might also find this interesting:
http://www.canon-europe.com/Support/...ork_iii_en.asp

A virtual (pdf) coffee-table book on EF lenses.
Lock up your wallet before reading !

[Axle]

heeey that's pretty awesome.

[opus]

amazing. Can you imagine the cost of the equipment used to make them?

[Asylum Steve]

You might not have all the equipment laying around the house to do this yourself, but it's pretty interesting...

Indeed. A little known fact is that this same exact process is used to make Three Musketeers Bars, Twinkies, and Burger King Whoppers.

The others simply use different ingredients...

[Loupey]

Hey, Mike - thanks for the link! Love watching how things are made.

Lots of good information in this link :thumbsup:

[cm_mtb]

Great link, Mike! It was pretty cool to see a pile of white powder turn into precision optics.