100-400 paired with A9/1.4x TE or A7IV in crop mode?

Started 3 months ago | Discussions thread
Pete_vB Regular Member • Posts: 199
Re: 100-400 paired with A9/1.4x TE or A7IV in crop mode?

dcstep wrote:

Wow! Way more CA with the RIV. I don't understand why, but the a9 image is clearly superior.

There may be a fractional exposure difference, with the a9 a fraction of a stop lower. If I look at the edges, the RIV has CA, but looking at the bird's body, the a9 has no details in the black body feathers. No two bodies are likely to have the exact same EV.

I suspect both effects may be real? Slightly less detail in the feathers may be due to the lower DR of the A9 sensor at the higher ISO setting, while the CA might be magnified by to the smaller pixels of the R4?

Pretty big color shift between the two as well even though the AWB was measuring nearly identically between the two shots.

 Pete_vB's gear list:Pete_vB's gear list
Sony a7R II Sony a9 Sony a7R IV Voigtlander 12mm F5.6 Ultra Wide Heliar Sony 1.4x Teleconverter (2016) +9 more
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