[popo]

 Well JoJu if your happy,  I'm happy after all it's that that counts the most!

 

  As someone who shoots a lot at 600mm it's pretty pointless me worrying about a lightweight system, I used to swear never to have a heavy camera but here I am weighting/waiting for the delivery of my D750.

 

 

https://www.flickr.com/photos/124690178@N08/

 

P.S. Pentax has a bigger problem than Nikon with reds, when saturated they turn slightly to magenta, Nikon just saturates and loses detail, to be quite honest I've never really shot with Canon, but I think sensors have less dynamic range in the red band, I can't say I've ever seen the green or blue band saturate, but the 255 max. is often seen with reds.  

 

Currently I mostly use up to 400mm on APS-C and also like birding. Nice photos there BTW. I'm not ready to give that up, but unless I'm intentionally doing that, I think there is room for a lighter bag for me.

 

As for bayer sensors, red channel has always been a funny one to me. They red part of bayer filter by itself covers quite a broad range of spectrum from green into NIR. It should be pre-filtered to attenuate the longer wavelengths by additional filters on top of the sensor, such as the IR block and possibly separate red shaping filter to help with colour balance. But it still retains some significant green sensitivity that have to be taken care of by the raw converter. So given that, I can well imagine depending on the scene and imaging chain design reds may run into problems in particular. Canon in particular have a relatively weak red filter in their bayer pattern so this usually results in weaker colour separation scores on DxOMark not that I care about their overall values. In relatively unprocessed side by side images I think Canon can have warmer looking images than Sony based sensors, but this may also be contributed elsewhere other than the sensor and I couldn't prove there was a link.