Originally posted by Winder You being a Pentax user has nothing to do it. Fail #1
Actually, it does. Not specifically being a Pentax user, but a non-135 format user; I don't need "equivalence", except maybe in the rare occasions I would want to compare two formats on paper. And even then it's unneeded, because the good, old methods are telling me all I want.
Originally posted by Winder That's not what he's saying at all. You're completely missing the point.... Fail #2
Can't you see the big "ISO, Aperture, & Focal Length - Why they suck"? How about "Crop Factor with ISO & Aperture: How Sony, Olympus, Panasonic, Canon, Nikon & Fuji Cheat You"?
If I'm mistaken then please, explain to me what they really mean.
Originally posted by Winder Where did he claim this? At what point in the video?
When he started comparing images taken with different formats and was amazed how they're not the same. It starts at 1:30, and by 1:44 it's getting interesting. To quote the author: "that doesn't makes any sense"; and he's claiming that focal length "doesn't work". Sorry for being blunt, but that is pure BS: the focal length always works, even if the lens is not put on any camera.
It's the "replacement focal length" that doesn't work, except in certain conditions; and it's even influenced by post-processing. How's that for an universal metric!
Originally posted by Winder That's not what he said.
Discussion about ISO starts at around 3:35, and you can see on the screen: "For the pixel peepers: This covers overall image noise, not per-pixel noise, which has little practical impact the way most of us view images. I will cover pixel density and per-pixel image noise in a later video." And it's continuing on the same line, comparing the noise at different ISO.
Of course, you could say that he was only talking about "total light gathering" (another thing ISO isn't supposed to measure); but this is built around "overall image noise".
Originally posted by Winder Again. Not what he said.
The discussion about "Aperture and DoF" starts at about 15:00. At 16:05 we have two images shot with the same aperture but on different formats; same story: DoF is different, and he's amazed about it.
Originally posted by Winder You are completely missing the point. The ASA/ISO standards was developed as a standard for sensitivity of film. Sensors don't operate the same way and we are dealing with digital gain, not sensitivity. Another point you seem to completely miss is that in the film days we didn't have so many lenses being used across so many different formats. Companies weren't designing for multiple formats with the same lens like they are today, so nobody really worried about equivalent FoV or performance. Companies didn't market lenses based on the 35mm equivalent. His point is that if companies are going to market the equivalent focal length to uninformed consumers, then they should also market the equivalent aperture. Since aperture is a function of focal length, you can't change the parameters of one and not change the other.
No, I am getting the point - I just disagree with it. But it seems to me you are missing the points he's making and the implications (see above).
As I already said, if the companies would write on their lenses the "equivalent" aperture and focal length, the result would be chaos.
On compacts it works, but just because of two factors:
- people don't know nor care about sensor sizes, which actually are never precisely specified.
- the lens is fixed. That is, you can't take a 200mm lens, put it on your compact and wonder how it's much more "tele" than the integrated "750mm".
And I'll end up with yet another amazing quote from that video:
"Camera settings are kind of arbitrary and meaningless". EPIC FAIL, with decades of photography to prove it.