On Sun, 28 May 2017 21:22:18 -0400, nospam
wrote:

In article , Eric Stevens
wrote:

The issue is the ability to
distinguish tonal differences. e.g. In my younger days I had a sense of
perfect pitch. The vast majority of people do not. While one may not
hear undertones and overtones with their ears, in the traditional
meaning, there are other senses that kick in. Of course if you spend
your days listening to heavy metal, you will lose that ability.
As to all people seeing the same color:


http://discovermagazine.com/2012/jul-aug/06-humans-with-super-human-vision

that's the exception, not the rule.

I see you as refusing to acknowledge any of the exceptions.

i acknowledge them, however, they do not matter.

do you really think nikon and canon are going to design cameras for a
tiny, tiny minority, or for the masses who have normal vision?

I think they ae going to design cameras to keep their most influential
critics happy.

that would be stupid. they make cameras to sell to the masses.

they also want to sell lots of them, not satisfy a bunch of bloggers,
who generally don't know as much as they claim and are being paid off
anyway.

They are unlikely to require that their critics have
their color vision tested first. Unless of course you have heard of
this being done.

no need. it can be assumed they have normal vision, because that's what
most people have.

not very many visually impaired people are testing cameras and then
blogging about it.

Would you call persons with four cones 'visually impaired'?
--

Regards,

Eric Stevens