smaller cameras can't apply tho. D70s was always too small, D300 was OK .. D800 nigh on perfect. I can hold the 1kg all day, that is other than a few mins at a toilet break, camera in hand for about 12+ hours.
No way I could do the same with the D5500 I recently got my daughter to play with. Camera body too small, no GRIP to speak of, and the fact that it's 100g less in weight than an OMD-EM1-II(at 400 gr or so) .. makes no difference to me. I simply can't hold it.
I don't have huge hands. Just my preference.
Funny side story: many moons ago I had the opportunity to shoot a nail into my finger, so I obliged without thinking about it. It's one of my auto modes .. if there's a way to inflict harm to self, I've probably done it!
![Stick Out Tongue](images/smilies/tongue.gif)
So anyhow, large 4" nail in right index finger(I'm right handed). Hospital thought it best to place my entire left arm in a plaster cast! (for a finger!!).
Cast made camera holding a right PITH(pain in the hand .. literally) not cause of the finger, but of the plaster cast. Couldn't bend my right arm properly to hold camera.
Result was that I cut the cast, and made myself a finger splint out of it's remains. strapped it to finger when not required(ie. showering, dishes and photographizing).
moral: sometimes to achieve our desired outcomes, one simply has to push their own self imposed envelopes just that little bit further.