Some shots with E-M1+40-150 & D810+70-200

The downsizing was mainly to demonstrate the advantages of higher mp counts , my main hope for the next round of mFT . I am looking forward to seeing if the 40mp trick is practical. The higher mp count of the D810 works in two ways firstly it gives excellent detail and DR at low ISO , secondly by downsizing and taking advantage of the extra detail for more flexible RAW processing { NR etc} at high ISO.

No, you actually showed sensor sizes and you were speaking about image quality... But the comparisons you were making were due to pixel counts and you were showing it by cherry picking the bodies you chose to show.

I have zero experience of Canon DSLR'S but looking at a straight comparison between the Canon 6D and E-M5 both at 3200 there is a very significant difference.

Hmmm, tell me Jim, Why 3200? Why not base ISO, ISO 200, 400, 800 etc?

obvious ?

Here is base ISO:

Base ISO again:

And ISOs for equivalent light on the sensor, in other words we want the same DoF because otherwise they are different images, and the same shutterspeed or images may be blurry etc.

Marginal Jim, marginal at best. And where we want equivalent images in many working environments the EM5 looks a hair better... And has better DR, better Colour handling etc. when using equivalent ISOs.

Here is an example of a working environment. 2 doctors doing a surgery on a racehorse. Here I do not want to isolate in any extreme way as one doctor will be in focus and the other fuzzy... I have a limited space to move in and want to show the anesthesiologist in the background as well... Here is a perfect high ISO example where a bigger sensor size would have had relatively little benefit generally speaking.

F2, ISO 2500, 1/60SS on my EM5 would have been

F4 ISO 10000 (ish) 1/60 on a D6

I didnt want a slower shutterspeed as everyone was shifting around, The more I opened up  the fuzzier the doctor in the background would become, as would the horses head.

No real advantage to a larger sensor.

I could just as easily place the A7s bank note vs a jpeg from the Nokia 41mp Camera Phone... A pointless strawman post. There is a lot more to image quality than sensor size on system cameras, resolution is only one metric... But cherry picking...

Resolution is a vital factor both for low ISO detail shooters { my interest } and for the high ISO guys the more data you have to play with the moire flexible the end results. We have a great selection of lenses at our disposal for mFT , I cannot see why anyone would not want more mp, storage is dirt cheap. The 40mp trick is the single most interesting update of the EM511

Well it has guaranteed my purchase as for my product work it would be perfect. And in fact having a 16mp general camera and a 40mp product/landscape/still life/ interiors etc. camera would be pretty darned cool.