ISO vs Sensor Size (Noise)

prodigy2k7

No longer a newbie, moving up!
Joined
Apr 22, 2008
Messages
1,668
Reaction score
22
Location
California, USA
Can others edit my Photos
Photos OK to edit
I am very confused... LETS HAVE A DISCUSSION :)

reference video:

He says the 7D MK II has a more efficient sensor (20% more) than the 5d mk iii but the 5d has a larger sensor and therefore is gathering more light. I understand it gathers more total light, but how does that play into iso performance? I thought what is important is the light gathered per pixel?

He also says the 7D mk ii is only 3% behind the D810 in terms of sensor efficiency which I find hard to believe...

What am I not getting exactly?
 

jaomul

Been spending a lot of time on here!
Joined
Feb 4, 2011
Messages
5,715
Reaction score
1,554
Location
Cork Ireland
Can others edit my Photos
Photos OK to edit
The % numbers are bs
 

Overread

has a hat around here somewhere
Staff member
Supporting Member
Joined
May 1, 2008
Messages
25,363
Reaction score
4,911
Location
UK - England
Website
www.deviantart.com
Can others edit my Photos
Photos OK to edit
Whilst Ken Rockwell is famous for being very biased in his opinion this guy is slowly becoming famous for being generally wrong with his maths/theory/understanding.
 

wyogirl

Oh crop!
Joined
Jun 18, 2013
Messages
1,593
Reaction score
611
Location
South West Wyoming
Can others edit my Photos
Photos OK to edit
I don't think the "sensor efficiency" really matters. It's just saying that IF canon applied that same tech to a full frame sensor that it would THEN be better.

Regardless-- I absolutely love my 7dmkii.
 

Braineack

Been spending a lot of time on here!
Joined
Jun 17, 2013
Messages
13,184
Reaction score
5,596
Location
NoVA
Can others edit my Photos
Photos OK to edit
"very confused" + Tony N. video = Braineack not surprised.
 

KmH

In memoriam
Supporting Member
Joined
Apr 9, 2009
Messages
41,401
Reaction score
5,702
Location
Iowa
Website
kharrodphotography.blogspot.com
Can others edit my Photos
Photos OK to edit
What counts is not the overall sensor size, but the size of a single pixel.
Smaller pixels develop less signal and tend to have a signal-to-noise ratio (SNR) that promotes image noise.
 

Ysarex

Been spending a lot of time on here!
Joined
Nov 27, 2011
Messages
6,754
Reaction score
3,272
Location
St. Louis
Can others edit my Photos
Photos OK to edit
What am I not getting exactly?

Exactly you're not getting that Tony is a clueless clickbait monger who would otherwise be censored by an editor in any legitimate form of media. You've only made one mistake so far -- you watched it. Self-hypnosis may help you forget what you saw.

P.S. Here's comparison specs on the 7DmkII and the D810: Photographic Dynamic Range versus ISO Setting

Joe
 

Braineack

Been spending a lot of time on here!
Joined
Jun 17, 2013
Messages
13,184
Reaction score
5,596
Location
NoVA
Can others edit my Photos
Photos OK to edit
Because I've posted twice in this thread, my post efficiency is now 50%.
 

astroNikon

'ya all Bananas I tell 'ya
Supporting Member
Joined
Aug 15, 2013
Messages
13,668
Reaction score
3,341
Location
SE Michigan
Can others edit my Photos
Photos OK to edit
Because I've posted twice in this thread, my post efficiency is now 50%.
That makes you 50% illogical.

Catching up to Tony at 100% ...

I've tried watching his videos in the past. I just can't follow it because he deviates from reality too much.
 

Braineack

Been spending a lot of time on here!
Joined
Jun 17, 2013
Messages
13,184
Reaction score
5,596
Location
NoVA
Can others edit my Photos
Photos OK to edit
Yeah but if you take reality, and multiply it by crop factor squared, it doesn't even matter.
 

unpopular

Been spending a lot of time on here!
Joined
May 17, 2011
Messages
9,504
Reaction score
2,002
Location
Montana
I'm starting to think that Youtube just isn't a good place to get information.
 

Most reactions

New Topics

Top