[Leica] Leicas and Cateracts

[Richard Man]

Hi Rei, best of luck to you whatever you decide. I have no medical
opinions, but my eyesight definitely isn't what it used to be either.

I mostly use the 4x5 now because I am doing personal projects, but when I
use my Leica, basically, I am focusing by "best estimate" - that is, a lot
of time I do not see a perfect aligned image any more, but it's still easy
to say "OK, this is clearly really off, and if I crank this way it is also
clearly off, therefore, while somewhere in the middle here looks bad to me
still, it must be the in-focus because it is the best of the bad"

And usually I still nail focus that way, even at 1.4

Good luck

On Sat, Aug 27, 2016 at 1:56 PM, Rei Shinozuka <shino at panix.com> wrote:

>
>
> First, "Hi" to the LUG and the many friends I've met here.   I've been
> pretty quiet here as of the last few years (I switched to digest), but I
> still get out the M9 and Noctilux from time to time:
>
> http://gallery.leica-users.org/v/shino/2016arizona/
>
> http://gallery.leica-users.org/v/shino/tedsprom/
>
> Here's my question and I hope it's not considered rudely off-topic for
> this board (thought it involves optics and Leicas)
>
> I was recently diagnosed with cataracts in the right eye and despite my
> love of bokeh and optical aberations, it's degraded my vision to the point
> where I'm going to have to get the eye treated.
>
> I've read up on cataract surgery.  It looks like there are 3 types of
> solutions on the market today.  From the web this is what I've gleaned:
>
> A. Monofocal
> PROS: Good image quality
>            Most mature product
> CONS:  Set to focus at one distance only; need glasses for near distances
>
> B. Multi-Focal (e.g. TECHNIS, RESTOR)
> PROS: Concentric lenses set at different focus distances, allows focus on
> near/intermediate/distance
> CONS: Inferior image quality, halos at night, decreased low-light
> sensitivity
>
> C. Accomodative (e.g. CRYSTALENS, TRULIGN)
> PROS: Dynamically focuses like the human eye, good image quality
> CONS: Limited range of focus, newest technology
>
> I'd love to keep using my RF Leicas.  Has anyone on this list undergone a
> Cataract procedure in the last few years, and has it affected his or her
> photography?  Has anyone tried one of the premium types (bottom 2 choices
> in the above table).  I'd love to hear your experiences.
>
> Most doctors don't quite get it when I say "But doc, will I still be able
> to focus accurately at f1.0?" but I think many of you will understand.
>
> thanks!
>
> -rei
> shino at panix.com
>
>
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>



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