philip_pj wrote:
Thanks for the CA demos! ARRI have given the entire CA issue a huge amount of attention. It's acknowledged by all insiders that you cannot remove it entirely. ARRI's optical engineers changed the green/magenta (and other colors on occasion) fringing to 'warm and cool' fringing, in the little that remained after they were finished.
'The Signature Prime..has significantly less (CA), and when we see it, the colors are *warm and cool*. That’s because it is not yet possible to eliminate spherical aberration in a lens, and warm and cool are hues we see naturally all around us.
Cyan and magenta light only appears in artificial environments, and those hues draw a lot of attention in natural environments. On the rare occasion that chromatic aberration becomes slightly visible in a Signature lens, you will likely not notice it because the hues are natural.'
This is something I'd like to see adopted in stills lens design. One of the reasons they battle so hard with CA is HDR and ever-improving screens in the future, both will make it more visible. And see this, as another key reason for all the APD/ED glass:
'Leaded glass solves a lot of chromatic aberration issues while remaining neutral in color. It is a key glass component in vintage lenses..' Producers should be free to include lead in their lenses. Some already do so via exemptions. It's more pressing in stills, where people look harder at non-moving images, as seen above.
https://www.provideocoalition.com/arri-signature-lenses-part-1-making-a-modern-lens/
Do you really have to flood EVERY thread with your influencer crap? It's ANNOYING! Don't you have anything better to do with your life? This is a forum, not a platform for guerrilla marketing! This is supposed to be a place for discussion, not self-promotion.
