Calzone
Gear Whore #1
James,
The Roaring Twenties, a time of great indulgence happened right after the Spanish Flue Pandemic.
I would expect the same behavior after Covid.
Cal
Apo Summicron 35mm
- Thread starter Freakscene
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James,
The Roaring Twenties, a time of great indulgence happened right after the Spanish Flue Pandemic.
I would expect the same behavior after Covid.
Cal
james.liam
Well-known
Same happened after the Bubonic Plague of 1348.
Calzone
Gear Whore #1
James,
Human nature is pretty pedictable.
I hope and wish all is well with you.
What I find hard is all the suffering of those that are hurting.
Meanwhile I'm doing fine.
Cal
raid
Dad Photographer
raid
Dad Photographer
Yes, you are correct, Cal. I cannot retire at such an age. I am still quite actively doing research and teach courses and serve on university committees.
If you want to see a cluster analysis for COVID-19:
https://www.linkedin.com/posts/raid...is-of-covid-activity-6772571881871593472-an5V
Which counties have a significant COVID-19 confirmed cases rate and death rate.
drew.saunders
Well-known
According to this video from Leica https://www.youtube.com/watch?v=MLdKhO0q65k&t=88s (or https://www.youtube.com/watch?v=tPk3F186vQA&t=67s auf Deutsch), the goal was to get the performance of the L lens squeezed into a size that's appropriate for an M, and they seem to have gotten most of the way there, but admit it's not quite identical in absolute resolving power. They show a couple MTF graphs that indicate it's just a bit less sharp than the L lens.
Calzone
Gear Whore #1
Drew,
Thanks for the link.
Seems like Leica really got close to the APO 35 Cron-L. Remarkably close.
The video also shows the 360 degree focus throw for the close focus. That was interesting.
Of course what is most impressive to me is the size. What is not to love?
Well I know: the price.
Anyways my APO 35 Cron-L is a remarkable lens and it is great to see that being carried over to the APO 35 Cron-M.
Cal
Calzone
Gear Whore #1
kangaroo2012
Established
Fast lenses, fast cars, fast women.
I am sure that is the order for costs.
Just depends on your fetish, nothing to do
with need.
Cheeers
Philip
I am sure that is the order for costs.
Just depends on your fetish, nothing to do
with need.
Cheeers
Philip
jszokoli
Well-known
Cal,
So we are going to have a giant party here in NYC, and you will be stuck up in Peekskill...
Joe
raid
Dad Photographer
The data shows that there are several states and parts of states with very high counts of COVID-19 cases and deaths. Take a look at Texas. It has the 4th highest rates in the US and also a high death count.
Freakscene
Obscure member
raid
Dad Photographer
What are the main differences, Marty?
Freakscene
Obscure member
The Leica is sharper right into the corners, is more near-far even in performance and its colour correction is better. Remember ‘APO’ is full correction in three colours, but ‘full’ doesn’t really have a definition, and the easiest way to measure colour correction is at three defined wavelengths. What happens away from those wavelengths can and will differ. Much of the rest of the performance is due to the floating element in the Leica.
It is always an issue whether mtf charts are calculated or measured - calculation relies on every lens being perfectly assembled. It is always an issue whether mtf charts are averaged from several distances, or at one (optimal) distance usually near infinity. If you map mtf from close to far focus many lenses perform less well.
I didn’t really like the handling of either lens and for my own work I’ll continue to mostly use the 50/1.4 asph. But if I won the lottery, I’d buy the Leica.
Marty
raid
Dad Photographer
Thank you for the information, Marty. I don't have a Summilux 50/1.4 ASPH, so I am just imagining how images would look like with such a lens.
james.liam
Well-known
It has a look like no other at f/1.4. Period.
In re: to the APO ASPH lenses; as mentioned by Calzone, along with breathtaking resolution Leica somehow boosts the contrast at the focal plane whilst reducing in it in the OOF fore and backgrounds. The effect is (too me) striking in that it markedly enhances the subject isolation, in spite of f/2. It's a different look. Remember, with these lenses all stopping-down does is increase DOF.
With the 50 APO, the resolution at f/2 is higher than some of the best 50's ever achieve by f/5.6.
Contemplate that for a moment.
Freakscene
Obscure member
Indeed: the 50 AA at f2 outresolves the older non-AA 50 f2 at f5.6. From the MTFs it is the same level of difference with the new 35 AA compared to the ASPH including the vII.
The very rapid transition from sharp to unsharp is a characteristic of the very high level of correction. Good microscope lenses do the same thing.
Marty
Michael Markey
Veteran
I`ve read that Karbe has also designed these lenses so that there is a drop in contrast behind the focus point which enhances the fall off ?
I`m not sure I understand how he has achieved that .
Freakscene
Obscure member
Yes. The design controls both in- and out-of-focus characteristics including contrast. Low behind the plane of focus contrast can make the in-front of plane of focus out of focus rendition a bit weird, but it is relatively simple to design with modern tools. All these things are a balance, but when your spec includes an $US8k+ price and modern glass (look at all the aspherical surfaces, and partial anomalous dispersion and high refractive index elements) and design capabilities you can achieve a lot, even if the design also stipulated an ouchful (Ko.Fe, 2021) e39 filter and a sub 350g mass.
I really hope Leica bring their attention next to the 28/2.
Marty
kram
Well-known
And VC follows with thier Apo 28/2 (which I could afford) 😎.
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