full frame mirrorless camera systems

a brief comparison

	Sony	Nikon Z	Canon R	Panasonic S
sports camera	Sony a9 $4500	nil	nil	nil
sports camera specs	24mp, 5/10/20fps; 4K30p; 693PDAF; 5EV IBIS; 3.7mdot EVF; dual SD;	nil	nil	nil
HiRes camera	Sony a7RIII $3200	Nikon Z7 $3400	nil	Panasonic S1R $3699
HiRes camera specs	42mp, 8/10fps; 4K30p; 399PDAF; 5EV IBIS; dual SD;	46mp, 4K30p; 493PDAF; 5EV IBIS; 3.7mdot EVF; single XQD;	nil	47mp, 6/9fps; 4K60p; 493PDAF; 5EV IBIS; 5.7mdot EVF; dual XQD/SD; 187mp HiRes mode;
standard camera	Sony a7III $1999	Nikon Z6 $1999	Canon R $2299	Panasonic S1 $2499
standard camera specs	24mp, 8/10fps; 4K30p; 693PDAF; 5EV IBIS; 2.3mdot EVF; dual SD;	25mp, 12fps; 4K30p; 273PDAF; 5EV IBIS; 3.7mdot EVF; single XQD;	30mp, 3/5/8fps; 4K30p 1.7x crop; 5655AF; No IBIS; 3.7mdot EVF; single SD;	24mp, 6/9fps; 4K60p; 225CDAF/DFD; 5EV IBIS; 5.7mdot EVF; dual XQD/SD; 96mp HiRes mode;
budget camera	Sony a7II $899	nil	Canon RP $1299	nil
pros	best eye tracking AF (except Sony a7II)			best EVF; HiRes mode; better, larger camera build
cons	dubious weathersealing; ergonomics and menu system not great	no dual card;	no dual card; no IBIS	large, heavy camera; no PDAF;
lens pros	reasonable range of native lenses; 24mm f/1.4 best 24mm prime;		best 50mm and 85mm f/1.2 lenses; programmable ring;	MF clutch on lenses;
lens cons	expensive	minimal range; expensive	minimal range; expensive	minimal range; expensive

Camera comparison details

	Nikon Z6	Sony a7III	Nikon D750	Nikon Z7	Sony a7RIII	Nikon D850
sensor	24.5mp	24mp	24.3mp	45.7mp	42mp	45.7mp
price $US in 2018	$1999	$1999	$1699	$3400	$3199	$3299
weight	675g	650g	755g	675g	657g	915g+batt
sensor IS	Yes	Yes	No	Yes	Yes	No
weathersealing	Exc	Good	Exc	Exc	Good	Exc
memory card slots	one XQD/CFExpress#	SD +MemStick	two SD	one XQD/CFExpress#	two SD	XQD + SD
viewfinder	3.7mdot EVF	2.3mdot EVF	optical	3.7mdot EVF	3.7mdot EVF	optical
rear screen	2.1m, tilt, touch	921k, tilt, part touch	1.2m tilt, non-touch	2.1m, tilt, touch	1.4m, tilt, part touch	2.36m, tilt, touch
burst rate	12fps	10fps	6.5fps	9fps	10fps	6fps (9 w battery grip)
AF points	273	693	51	493	399	153
AF coverage		93%	centre	90%	63%	?50%
AF tracking	clunky?	Yes	3D	clunky?	Yes	3D
Eye AF tracking	No/firmware upgrade?	Yes	No	No/firmware upgrade?	Yes	No
Fastest mech. shutter	1/8000th	1/8000th	1/4000th	1/8000th	1/8000th	1/8000th
4K video	30p	30p 100Mbps	nil	30p	30p 100Mbps	30p
1080HD video	120p	120p 100Mbps	30p basic	120p	120p 100Mbps	60p
comments	ProRes RAW Video via firmware upgrade coming		basic entry level feature set	ProRes RAW Video via firmware upgrade coming

#Nikon say they will release firmware to allow CFExpress cards which can be used the XQD slots
https://www.dpreview.com/videos/3279784857/dpreview-tv-nikon-z6-sony-a7-iii-and-canon-eos-r-compared
- Sony a7III has much better native lens range and is a better all round camera than either the Nikon Z6 (not as good AF or image quality) or Canon R (worse video, image quality and no IBIS)