Are rb67 and rz67. 360mm lenses the same optical design/formula?

[harlequin]

Hello Team,

I have a chance to do some horse trading for either a rb67 360mm C lens in very good condition or from another friend a Rz 360mm with more mileage on the lens odometer, was wondering if they would be same sharpness/contrast etc..

I just like the more compressed look with longer telephoto lens...
Thanks for your opinions and input on this!

Vincent//Harlequin

 

[Andrew O'Neill]

Optically the same. RB has shutter in the lens, RZ doesn't.

 

[MattKing]

Optically the same. RB has shutter in the lens, RZ doesn't.

Are you sure about that Andrew?
The RZ67 doesn't have a built in shutter - they are all in the lenses.

 

[Andrew O'Neill]

Are you sure about that Andrew?
The RZ67 doesn't have a built in shutter - they are all in the lenses.

oops meant to say RB has shutter speed controls on the lens. Thanks Matt.

 

[Dirb9]

There are actually 2 different 360mm lenses for Mamiya RB/RZ67 system, the older version is f/6.3, and the newer version is f/6, with a completely different optical design. I believe all of the RZ67 lenses are the f6 version, which I would think is likely at least a little better (otherwise why would Mamiya revise it?), but I've never seen a comparison. There aren't really any terrible lenses in the lineup, the difference between the two is likely subtle. The newest RB67 lenses will be marked K/L.

 

[yeolde]

Apo?

 

[Alan Edward Klein]

What's this a 350mm? Isn't that the RZ lens. the 360mm is for the RB.
https://photographylife.com/lenses/mamiya-350mm-f5-6-apo

 

[halfaman]

Apo?

Nope, the 350mm is APO not 360mm.

 

[Alan Edward Klein]

What's APO?

 

[halfaman]

What's APO?

Stands for "APOchromatic", which in the optical world means that chromatic aberration is corrected for three waves lengths. Mamiya RZ67 APO lenses don't need any focus correction for IR photography, for example.

 

[Neil Grant]

...APO - corrected for 3 wavelengths: blue, green, red and now infra red. That seems to be four wavelengths.

 

[wiltw]

What's this a 350mm? Isn't that the RZ lens. the 360mm is for the RB.
https://photographylife.com/lenses/mamiya-350mm-f5-6-apo

The RZ 350mm is 7 elements in 6 groups and uses low dispersion glass,
the RB 360mm is 8 elements in 5 groups,
the RZ 360mm is 6 elements in 5 groups.