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Sony A7RIII Star Eater?

Sony A7RIII Star Eater?

By Casey Grimley Website Instagram

I wanted to share with everyone some night photos I took with the new Sony A7RIII to show how the now infamous, and according to some unforgivable, "Star Eater" algorithm on the Sony A7 series cameras.

If you're not familiar with the issue, it's basically anything longer than a 3.2s exposure will get a noise reduction applied to help fix hot pixels.

In these photos I demonstrate what most would consider a normal wide field astrophoto, aka  nightscape. Now there are those certain photographers that shoot extended long exposures, 2-5 minutes or even longer, but this test isn't for you, move along. (Kidding, if you're local to Utah and have a tracking mount, I'd love to get with you and do some tests of longer exposures)

WIthout further ado, here's the photos. It may be important to know that these are just screenshots so the quality is super high, but I believe it's high enough to tell.

All photos are shown at 1:1 and taken at 16mm, f/2.8 on the Sony A7RIII. Only settings applied are lens correction, medium tone curve, and a uniform white balance. No exposure adjustments or noise reduction have been made.

A7RIII 3.2 vs 4.png
A7RIII 3.2 vs 10.png
A7RIII 3.2 vs 15.png


I don't know about you but I sure had a hard time finding any "eaten" stars, and wouldn't you know it the longer the exposure, the brighter the stars turned out...

I will continue to use Sony cameras for my photography because they fit all of MY needs, both in the landscape/nightscape realm and for portraiture.

P.S. I have no idea why I changed the ISO to 3200 on the 15s exposure. I think I was going to take another set of photos but lost feeling in my fingers so I called it a night.

Gear  used:


Sony 16-35mm f2.8 GM

Best Memory Card for the Sony A7RIII

Best Memory Card for the Sony A7RIII

How I Got The Shot!

How I Got The Shot!