[davidmanze]

Tony Northrups findings for shooting eye detect and BIF with the R5/R6 and his findings ...... a mixed bag!

 https://www.youtube.com/watch?v=iUe4vsO3HQ8

  Remarkable eye detect ...... but ......

EVF lag and battery life ......

Toni is a mixed bag himself.

 
   At a time when many are going ML ..... there are some who want to know in advance whether a particular camera is going to be suitable for their needs ...... like we do here with lenses ...... the R5 costs $4,000 .... so not a financial decision to be taken lightly. 
  It's a great Swiss knife camera no doubt ..... but many want to know where it's strengths and weaknesses lie ...... with respect to their personal usage ......
.....  for BIF it has it's shortcomings ..... especially with fast flying birds, which most are ...... EVF lag ..... which ironically will make itself felt most with the new 800mm F11 telephoto ... ... where when looking through the EVF, the bird is flying into the frame ...... yet in the image the birds will be flying out of it ..... or even worse clipped .....

 .... that is worth mentioning don't you think?  .... of course if you don't shoot BIF it's neither here nor there!

Battery life will also be somewhat relevant ... whether you think that Tony is a mixed bag or not!

It is totally up to you to believe mixed bag TonY's videos or not, Dave.

But if I were Tony, I'd turn off image review first before testing the view finder freeze, it would help a lot.

 What has the image review got to do with things? ...... this about the scanning/ processing / EVF ...... do you think he is reviewing every image whilst shooting in burst mode?
  ..... it's the scanning /processing speed of the EVF giving the delay ..... all that takes time .....
 ..... the Sony A9 has a lag of 6ms ..... most MLCs are around 60ms or more .... for most uses that's fine ....... 
  Tony has mentioned that in extreme cases when shooting birds he has had trouble tracking birds when shooting bursts using the A9 ..... the lag compounding itself frame by frame until you are seeing a couple of frame images in the past until the bird is no longer visible in the EVF .... I know this in extreme cases when using telephotos with tele-converters etc and the FOV /magnification is very high.
 The R5 has no doubt pushed in ""one leap camera technology by a huge margin .... a turning point like the A9 was ..... but as things compute faster other glitches/hiccups rear their ugly heads .... and processing speeds need to increase complete with cooling solutions.

 Modern video games are probably the best example .... they need extreme processing speeds ... extreme cooling ..... my video board looks like fridge unit ...... (S/H gaming computer)
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Toni wrote:

"Birds in flight is still IMHO the kingdom of DSLRs"

When things move fast, absolutely! ....... how much technology will it take to match the simple optical mirror and focus screen?