[MF3D.FORUM:517] Re: Exact fl match for paired lenses.

["David Lee" <koganlee@xxxxxxxxxxxxx>]

>        I am not sure what the error is a a percentage of....

It would seem to be well less than 1%. Paul calculated it at .27% which is
surely in the ballpark.

The worst lines needed to
> come together by .15mm to be perfectly aligned.
>

In order to see what this looks like I pulled out my micrometer and opened
the jaws .15mm. This is an exceedingly small amount. I'm sure that my
Yashicamats (of which I compared 5 to get the 2 that I now use) have a
larger discrepancy than this.


>     I shot some 3d shots with these lenses and I think that the corners go
a
> bit soft... meaning the center was tack sharp, but in the corners, reading
> text on some boxes was more difficult to read then the box in the center,
> but still legible.

I think that this is the case with all the lenses that I know of. I don't
think it's possible to make a lens which is as sharp in the corners as it is
in the center. Everything I've read about these lenses though suggests that
they are as aharp as anything made.

>        So how does my results measure up?  Are they excellent, good, fair,
> poor, or not a useable pair?  Thank you again.
>

My guess is that they will be just fine. However, you may want to send some
samples to people whose opinions you respect to see what they think.

David Lee