Samyang 85mm f1.4 - Chromatic aberrations at f1.4

[stingOM]

I posted a photo here http://forum.mflenses.com/samyang-85mm-f1-4-my-dog-t59161.html
and I noted at f1.4 there some noticeable (green and purple) CA when view at 100%


Original photo:
http://s168.photobucket.com/user/stingOM/media/Samyang%2085mm/CA.jpg.html

I think it has been shown by others as well. For example:
http://www.dpreview.com/galleries/3210970541/photos/916504
http://www.dpreview.com/forums/post/37748509

Termed "Bokeh Fringing / Longitudinal Chromatic Aberrations" here:
http://www.photozone.de/canon-eos/610-samyang8514apsc?start=1

I think my Zuiko 85mm f2 is better, but it is probably not a fair comparison.

[philslizzy]

It's not an apochromatic lens, so some degree of CA will be present, as it will be in any lens. I'm not sure why this is a problem as the amount is fractional compared to this:

[tomasg]

Isn`t that called LoCA (Longitudinal CA), not really CA? See here: http://www.photozone.de/canon_eos_ff/483-samyang_85_14_5d?start=1

Capture NX2 has a tool that corrects it very good.

Edit: i see you already posted the link...

Tomas

[Aanything]

I have not much experience with extremely good or fast glass, but I'd consider this amount of LoCA ok for an 85/1.4 wide open.

[Attila]

That is perfectly okay a bit light dependent in bad evening light my Planar 85mm f1.4 produce even worst one, I saw similar on brigh light from Zuiko 90mm f2.0 both big names.

[Laurentiu Cristofor]

Yes, that is LoCA and my Zeiss Planar 85/1.4 has it too, so the Samyang is in good company

Most lenses have LoCA, especially fast ones. Like philslizzy pointed out, some lenses have a lot of it - what you have shown is nothing to worry about.

[hoanpham]

You can also avoid shooting people/scene with purple and green colors,
but whole green or whole purple is ok as you can either remove or blend in post