High on the Mountain Top
Join Date: Sep 2008
Location: Fraser Valley
Interest: Photography, Nature Observation, Health & Fitness, Nutrition, Shinrin-yoku
When I compared your Sony A7R to my Nikon D800 the specs are very similar. DxO Mark gives the same score for both cameras which isn't too surprising since the D800 incorporates the sony sensor but I think Nikon tweaked it a bit because the low light iso score is a bit better. I've used iso 6400 which is the highest Nikon recommends although it can go up to 25,000 but probably not useable. There is definitely noise at 6400 but I used Noise Ninja and it did a great job cleaning it up. Marc Adamus used iso 12,000 with his D800 in one of his shots and it looks great.
The A7R beats the D800 on weight: 400 grams vs 820 which I find quite amazing how they managed to put such a large sensor inside a camera ½ the weight but I can't believe how poor the battery rating is; only 270 shots? The D800 is rated around 900 although I never get that much.
I think purple fringing is fairly common with Zeiss lenses but even my 17-35 mm nikkor which I bought used but in mint condition ($1200) on eBay suffers the same problem.
Remember, you should not use subpar lenses if you want to get the most out of the 36 MP sensor. You can even use Nikon lenses with the A7R using the Novoflex adapter.
You also mentioned using manual focus in your review. I use manual when I do focus stacking with Live View activated….works really well.
Anyways, interesting review and I hope you make good use of your camera. I take mine out for exercise every week and it works flawlessly in all types of weather.