Again to echo what's already been said - this isn't the way to test higher ISO performance. You need low light conditions (usually translating to more shadows in your histogram) to evaluate ISO performance.
I've also got a few questions:
- was VR turned on?
- did you use a tripod?
Yes VR was on, and yes it was handheld.
I can definitly add a darker shot, I will try to do the same flower or something similar to keep it even.
I was aware that low light = worse noise, but I wasn't really thinking about how I would not use the camera.
Generally if the light is much worse I would use a lower ISO and longer shutter speed, but for the sake of testing, I will post the other scenario as well.
Thanks for the feedback so far though, glad to know what works for others.