Canon FD to 4/3rds adaptor

[qwerty3557]

I have recently been given a couple of FD Lenses and I would like to use them on my E-520. I currently use OM and F mount lenses on the E-520 but I understand that FD lenses need an adaptor with a corrective optic to reach infinity focus.

However those adaptors with no glass say it will not reach infinity and are for macro only. What does this mean by no infinity focus? Will they work right up until infinity using the distance sale on the lens? or is this affected aswell?

Is it the case that the FD lens works up till it's maximum distance as per on the lens then no further? in which case if a lens sais it will focus to 50 m on the scale can it still accomplish this?

Sorry for all the questions, but any help will be much appreciated.

[Rolf]

Hi,

it is very easy

adapter with glass - you can focus to infinity, but you will lose a lot of quality because there is a cheap lens in the adapter

adapter without glass - depending on the original focal length of your lens you can only focus from for example 1 m to perhaps 10 m, the rest will be unsharp.
You can´t get a sharp image at infinity.

There is only one series of cams (Panasonic G1/GH1/GF1 or the Olympus Pen, all m4/3) where you can use FD lenses without losing the quality.

Samples see here
http://forum.mflenses.com/panasonic-g1-t20948,start,15.html

or you contact our member trifox, he will reconstruct the lens to another mount.

[qwerty3557]

so a 300mm lens that should focus to 50m may only reach 20m before reaching its limit?

Which leads to me another question why is it that Nikon F mount lenses can fit on EOS EF bodies without corrective optics?

The flange focal distance on a nikon is 46.50 mm and a canon EOS is 44.00 mm. An adaptor of 2.50mm can be used and works to infinity.

The flange focal distance on a 4/3rds is 38.67 mm and canon FD is 42.00mm...

so an adaptor of 3.33mm could be used to reach infinity....

so why are there no slim adaptors like th F - EF mount for FD - 4/3rds?

[Rolf]

[dnas]