Yes, I have the remains of an early 50/1.4 and it has one radioactive lens
element. The 55/1.2 I have has two, one of which is the front element, so
it is much more yellow than the 50/1.4.
Mark
On Fri, Nov 18, 2016 at 4:13 PM, Frank <wijsmuller@xxxxxxxxx> wrote:
> Thanks for the info. Was this glass in early 1.4/50mm's too? The
> silvernosed ones look yellow sometimes as well?
>
> 2016-11-18 17:00 GMT+01:00 Sawyer, Edward <Ed.Sawyer@xxxxxxx>:
>
> > The glow is a feature, not a bug. ;-) Try it with something with a lot
> > of busy-ness in the background, e.g leaves on a tree, the bokeh is pretty
> > unique.
> >
> > Those with lanthanum glass (e.g. yellowing) are probably optically
> > sharper/better than those without, since generally the lanthanum type
> glass
> > was used because it had better optical properties (similar to how leaded
> > glass is/was better, despite falling out of favor for various reasons).
> >
> > -Ed
> >
> >
> > On 11/18/16, 6:16 AM, "olympus on behalf of
> olympus-request@thomasclausen.
> > net" <olympus-bounces+ed.sawyer=unh.edu@xxxxxxxxxxxxxxxxx on behalf of
> > olympus-request@xxxxxxxxxxxxxxxxx> wrote:
> >
> > there is indeed
> > a kind of fog around contrasty lines in the picture, but it sharpens
> up
> > nicely in LR and the haze slider seems to help a bit as well. At f2
> >
> > --
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> >
> >
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