Please help me understand why people are excited about 6D? I cannot be excited about 97% VF, 1 x-pt AF, crippled 6D with wifi and facebook buttons. I will stick to a 5-year-old beloved 5D Mark II which is identical in IQ to Canon's newest sensors...
The 6D has a few IQ improvements over the 5D2 that ARE worthwhile.
100 and 200 ISO banding noise are almost completely eliminated compared to 5d2, my biggest complaint almost fixed.
6D's interface is better, center AF is better, quiet shutter is REALLY nice, hi ISO blows 5d2 away.
nope, plenty of good glass will outresolve even higher res sensors
Lenses are generally limited to around 22 megapixels of resolution, and no zoom has ever been made for 35mm that can exceed 21.3 megapixels over more than 15% of it's center frame.
my low cost Tamron 70-200/2.8 easily produces moire problems on my D800e, backing up what MR sez below. The lens is cheap cuz it's not well-featured but it IS sharp, end to end and right to the corners.
I have seen moire in pictures with a regular lens and a crop sensor 24Mp, equal to 54 Mp at a 24x36mm sensor
area, this means that the lens resolution are greater/ out resolves the sensor resolution.
The best lenses today handle more than 54Mp .
More pixels gives also better tonal transitions, less jaggies, easier to correct CA, crop etc etc
The point therefore of the 6D is that it has less than HALF the noise of the 5D Mark III and 60% better shadow recovery while having enough megapixels for any lens or just under.
The 6D really shines at super high ISO though, at ISO 16,600, the 5D Mark II has the same ISO performance as the 6D at 51,200. Thats 3 times better high ISO, in addition to the 2 times less noise at low and medium ISO.
One might be mistaken to assume that the 6D has the same or equal resolution to the 5D Mark II, because it has 99% the linear resolution. This would be a mistake, the 6D has 13% MORE resolution due to an improved AA filter using the latest technology.
It's also lighter, smaller and has much better AF, the price will hit $1700 in 6 months too. Guaranteed.
all good things over the 5d2 and even 5d3, depending on your requirements