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Bokeh and Lens Design
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PostPosted: Sun Dec 31, 2017 5:41 pm    Post subject: Bokeh and Lens Design Reply with quote

Article from a 2016 edition of Amateur Photographer magazine



PostPosted: Sun Dec 31, 2017 10:52 pm    Post subject: Reply with quote

Like 1


PostPosted: Tue Jan 02, 2018 9:58 pm    Post subject: Reply with quote

Did they get this right?
Over-corrected spherical correction is desired?
Isn't it the other way round?


PostPosted: Tue Jan 02, 2018 10:46 pm    Post subject: Reply with quote

Thanks!

Pretty confusing use of "behind" and "in front of" (the plane-of-focus), but well described otherwise.

Apart from that:
blende8 wrote:
Did they get this right?
Over-corrected spherical correction is desired?
Isn't it the other way round?


Which I also find somewhat strange. I have always thought that the Trioplan was an "over-corrected" lens.


PostPosted: Wed Jan 03, 2018 1:35 am    Post subject: Reply with quote

Yes. That should be under-corrected SA.