Phase one apo?

[henrikfoto]

I Wonder if the the very expensive new
Phase one blue lring lenses are apo?
I never see this marking anymore om never
Phase one lenses. Does anybody know?
They are very good but never apo-marked.
Are they what we called apo before or not?

I am just curious because the price seems to be "apo"..

[Paul2660]

That is a good question.

The APO 200 I have albeit a very sharp lens is lacking the same contrast that I see with the Schneider Blue ring and non blue ring LS glass.

Example the 240 LS compared to the 200 APO

Paul Caldwell

[henrikfoto]

With the digital corrections its hard to know if the lenses get better or
if the digital corrections just are better and more optimized?
With the prices Phase one now take for the most modern lenses I hope
that the lenses are stunning. Not just the software.

[Paul2660]

The Blue Ring Schneiders I have used are stunning, albeit, very expensive.  They are also heavy and large and thus I am limited in carrying them in the field. 

Paul Caldwell

[henrikfoto]

I am sure they are great, but why are the "apo" not there and its impossible to find any new mtf-curves?

[algrove]

A lens can be of "APO" quality without the name. Results are the determinate to me, not the name. I also have many technical camera lenses that are excellent and also have no APO designation.

Is APO more marketing today?

[henrikfoto]

A lens can be of "APO" quality without the name. Results are the determinate to me, not the name. I also have many technical camera lenses that are excellent and also have no APO designation.

Is APO more marketing today?

It might well be that the apo term is so misused nowadays that they avoid it because of that.
I have seen many cheap lenses that are branded "apo" and still are just ok.
But why cant we get mtf-curves of the new Phase one lenses?

[henrikfoto]

Are there no information or tests on the new Phase one lenses on the net somewhere?

[eronald]

With the digital corrections its hard to know if the lenses get better or
if the digital corrections just are better and more optimized?
With the prices Phase one now take for the most modern lenses I hope
that the lenses are stunning. Not just the software.

i believe chromatic aberration is the easiest lens problem to correct with software.

Edmund

[henrikfoto]

i believe chromatic aberration is the easiest lens problem to correct with software.

Edmund

Ok, that might explain why the term apo is not as important anymore.
But have you seen real tests or mtf-curves for the new lenses?

[Christopher]

Which lenses are you interested in ? What tests, I can tell you the 35/45/150 are all amazing lenses. The 80/110/240 are great as well and the 55 is good. (If you get a good copy)


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[henrikfoto]

Which lenses are you interested in ? What tests, I can tell you the 35/45/150 are all amazing lenses. The 80/110/240 are great as well and the 55 is good. (If you get a good copy)


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I am mostly interested in the 120 macro and the 150 2,8.
Are the new blue-ring lanses also variable like the ls-lenses are said to be, or are
the mostly good no matter if you are lucky or not?

[ErikKaffehr]

Hi Edmund,

Lateral chroma is easy to correct, but axial chroma is not.

Erik

i believe chromatic aberration is the easiest lens problem to correct with software.

Edmund

[narikin]

'Apo' has indeed been widely misused by lens manufacturers and marketing BS for many decades.

If you dig back you'll find online discussions on enlarging lenses by Rodenstock being branded 'Apo' when they were not. There was some explanation (via Ken Hansen?) of how Rodenstock justified this. They corrected one color but not the other, or something.  True Apo lenses are very rare, and very expensive. The best one I owned was the rare Apo El Nikkor 105mm. All it took was one look through a focus scope to immediately see what real Apo meant, and that all my other enlarging lenses were junk!