CA on Nikon35mm

[SsSsSsSsSnake]

since using the nikon 35 mm 1.8 or maybe its the Nikon 3300 i am noticing a lot of CA,first on the tree branches highlighted behind and tonight my cats whiskers instead of being white had a greenish hue.

using Aperture CA tool doesn't help much if at all.

any ideas?
thanks

 

[Nawty]

All fast primes suffer from CA, especially wide open. You need to stop down to avoid it.

 

[minnnt]

No idea about aperture, but lightroom has a dropper tool so you can be more precise on what you want to remove or there is the defringe tool. Maybe aperture has similar?

 

[Nawty]

Does aperture have a lens profile database that applies corrections?

 

[SsSsSsSsSnake]

Thankyou guys,Aperture does recognise the lens and has some options like moire sharpness detail etc,ill look closer in that section and see if there is anything more to do with that.
Other than those issues im very pleased with it

 

[odd jim]

Is there not a slider to adjust the ca correction? Sometimes you click the box on LR to correct (not used aperture) which sometimes doesn't fix it all until you add more correction via the slider.

 

[SsSsSsSsSnake]

thanks jim,someone on overclokers described it as this
sounds like spherochromatism, aka bokeh fringing, where the out of focus highlights take on green and purple fringing depending on whether it is in front or behind the plane of focus. Only true apochromatic lenses are perfect with respect to this and they don't come cheap. It can be edited out in PP with some care and photoshop/lightroom has some built in facilities to help deal with it. (though it's far from perfect) You just have to live with it as it's a very common trait in ordinary lenses.

 

[SsSsSsSsSnake]

but
do you get this with compacts too like e.g. canon G series or sony rx100 ?

 

[SsSsSsSsSnake]

the in camera processing of the jpeg reduces it quite a lot but more overall detail on the jpeg converted PP so would prefer the raw conversion

 

[minnnt]

Aperture sounds crap. Lr would just sort this straight away.

 

[SsSsSsSsSnake]

lol thanks David

 

[minnnt]

Glad to be of service.

 

[HoppyUK]

This sounds like purple fringing, longitudinal CA (as opposed to lateral CA, the normal stuff) that fast lenses are prone to - especially at very bright/dark transitions like branches against the sky or specula highlights. It can occur all over the frame.

I have found Lightroom effective with this. The normal CA correction tool works well on regular CA and usually bokeh fringing too, but the dropper tool is more effective against purple fringing. Sometimes needs fiddling with for best compromise over the frame. It can occasionally attempt to clean up other parts of the image too, if you have a few edges with similar colour!

 

[SsSsSsSsSnake]

thanks Richard