While working on the full review, I went out across the river in Portland, Oregon and took a few mediocre photos of the city for the sake of testing out how good the ISO performance is on the a7R II compared to its predecessor and, more importantly, the a7S.

Below is a shot taken at every ISO stop starting at ISO 1250 all the way to the max ISO of 102,400 so you can judge the performance and determine where you think the camera caps out on “tolerable.”

To download these files, right click and open in new tab or save as. They are 100% straight out of camera and unedited, so you’re working with exactly what the camera renders as JPEGs.

a7r II ISO 1250

a7r II ISO 1250

a7r II ISO 1600

a7r II ISO 1600

a7r II ISO 2000

a7r II ISO 2000

a7r II ISO 2500

a7r II ISO 2500

a7r II ISO 3200

a7r II ISO 3200

a7r II ISO 4000

a7r II ISO 4000

a7r II ISO 5000

a7r II ISO 5000

a7r II ISO 6400

a7r II ISO 6400

a7r II ISO 8000

a7r II ISO 8000

a7r II ISO 10000

a7r II ISO 10000

a7r II ISO 12800

a7r II ISO 12800

a7r II ISO 16000

a7r II ISO 16000

a7r II ISO 20000

a7r II ISO 20000

a7r II ISO 25600

a7r II ISO 25600

a7r II ISO 32000

a7r II ISO 32000

a7r II ISO 40000

a7r II ISO 40000

a7r II ISO 51200

a7r II ISO 51200

a7r II ISO 64000

a7r II ISO 64000

a7r II ISO 80000

a7r II ISO 80000

a7r II ISO 102400

a7r II ISO 102400

  • bwana

    Thank you very much for these high ISO pix. I use the A7S and A7R, both full spectrum modified, for astro/nightscape photography. I am looking at the A7R II as an unmodded camera for the same purpose. These images really help in my evaluation of the A7R II as a potential addition to the stable.

    To assist in my evaluation I “stole” crops from your images and created one comparison image, at: https://plus.google.com/photos/116260312230579398213/albums/5526553887296283313/6179572073645634354?pid=6179572073645634354&oid=116260312230579398213

    Based on the above I would rate A7R II performance slightly better than the A7R. I normally use the A7R at ISO 3200, sometimes pushing it to ISO 6400. From your pix I could probably use the A7R II at ISO 5000-6400 and push it a bit farther, although ISO 12800 is getting iffy! I use the A7S in ISO range 3200-12800, sometimes pushing it to ISO 25600 and have used it as high as ISO 51200 (but mainly for bragging rights at this level).

    The resolution of the A7R and A7R II have the advantage of being able to downsize images and gain signal-to-noise ratio from the simple process of scaling. Also, resolution can be a great advantage when going after small stellar targets.

    What lens did you use to shoot your high ISO session?

    Thanks again.

    bwa

  • Hoschti

    Thank you for the pics, what a nice camera