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

Started 3 months ago | Discussions thread
Tristimulus Veteran Member • Posts: 7,576
Re: 100-400 paired with A9/1.4x TE or A7IV in crop mode?

Interesting to take a look at the numbers.

The A9 has 6.0 micron pixel size.

The A7IV has 3.7 micron pixel size. The difference is about 1.6x linear.

So resolution wise the A7IV will win over the A9 + 1.4x converter.

The A7IV has about 15 % better linear resolution (about 30 % per area) than the A9 +1.4x converter. Pretty neck to neck for real life applications.

The A7IV without converter do offer slightly better resolution and a stop shorter exposure times. Do not know how much difference in auto focus efficiancy there would be. The A9 has terrific auto focus but the A7IV is not that far behind...

And the A7IV + 1.4x converter would offer even more resolution... 

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