The d810 is better than 5d3 on 3 counts:
1) Better dynamic range at iso100
2) Better resolution because no AA filter - adds ~10% more resolution at risk of more moire but the added resolution removes some of this risk
3) Higher resolution because 36mpx vs 22mpx - allows printing ~20% bigger
However:
1) For 3 years the 5d3 has outsold the d8xx - the difference in sensor performance obviously is not "much better"
2) Assuming you have 3 lens at $1000 each and you lose 1/3 of the value in selling and buying and need new batteries, new remote shutter, new flash... you will lose about $1500 in value by switching. Not counting the d800 vs 6d difference. So likely it would cost $2000 to switch.
3) If you don't buy expensive lens you are unlikely to achieve the resolution gain because you need better lens to match with higher mpx.
4) The dynamic range gain in iso performance is at iso100 so which matters for landscape on the tripod or portrait on a tripod but does not for weddings, action, wildlife etc where your iso is above iso 400. However the gain in dynamic range at iso100-400 is not enough to overcome having to use bracketing and blending for landscape so it is mostly a theroectical gain.
5) I find the ergonomics of d8xxx are not as good as canon. The remote shutter is screw in . The c1,c2, c3 are harder to acess through menu. etc.
In short my view is canon 5d3 is betterfunctionally/cheaper with the only shortfall that Nikon can print 20% bigger with same quality vs 5d3.
I personally would buy the 5dsr over the d8xxx (enables printing 20% bigger) because I have canon lens and like the ergonomics of canon but only you can decide whether the cost of switching (several thousand) is worth the gains in dynamic range at low iso. The only time I would see d810 better than 5dsr is if you shooting action in high light at iso100 (ignoring fps, focus and just considering sensor in dynamic range). That said, If I were you and you are not printing big, why not just stick with 6d until a 6d2 or 5dsr2 comes out.
And if you take the $1500 switching costs and add it to $2000 for a refurbished d810, you are about the costs of 5d4. So if you can afford d810, you can afford the 5d4.
Mar 20, 2017 at 04:29 PM
Previous versions of Scott Stoness's message #13968725 « ** SWITCH from 5D Mark III to a Nikon D810? »
