So I spend 2 weeks in India with a friend who had a D300 while I had my 7D – so I had a chance to do a subjective comparison
Well both are great cameras capable of producing wonderful results given a competent user.
Ergonomics is hard to evaluate as it is very user depended and is heavily relates to habits and personal taste – so take what I say with a spoon of salt
The most frequent functions used suppose to be the easiest to access/adjust so here is my take in order of usage:
1. AF point relocation – Canon Joystick is much easier hands down (yes the Nikon does have more points – but you need to get there 1st)
2. Exposure compensation adjustment – Canon a simple turn of the back wheel ; Nikon two finger exercise (one on the EC button one on back dial) – Canon much easy
3. ISO change - Canon top button 1st & then top Dial ; Nikon two finger exercise one on left top & second on back dial ; it is a bit better on Canon as you do not need to keep the finger pressed while adjusting (additionally Nikon does not have ISO on the top LCD – strange !)
• Q menu – great feature not available on Nikon
• Set up menu – Nikon seems to have some great features (e.g adjustable spot size metering) – but it is all buried in a cumbersome menu system
• Shutter sound – Nikon is like butter I love it (may be Canon should record it and play it back when we press shutter release)
• Viewfinder info – Nikon has more info that is useful e.g. metering mode
• Custom buttons C1..C3 – Nikon has a setup banks but it is no way near as easy and convenient as the canon implementation.
• Bracketing implementation : I always thought Nikon is better until I used it – yes you can have 5 or 7 frames but the max increment is 1 EV (I could not find a way to set it for more ) – I do a lot of bracketing and 95% of times I want more than 1.5EV increments (and 3 steps are enough for me in most cases).
Well as you can tell – I really prefer the Canon ergonomics and for me ergonomics is key to effective usage !