« on: October 07, 2012, 05:33:20 PM »
One step closer to FF mirrorless
This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.
I suggest you start reading more carefully. I never said that I care more about the cow than the milk. I care about both actually.My initial critique was that you seemed to care most about per-pixel performance. That may be ok if you are an engineer. If you are a photographer, one would expect you to care more about the final image than the individual pixels.
Often the two will be correlated, sometimes they are not.QuoteIf you care about milk, then it is the milk you should care about. The cows health may affect the quality of the milk, but other factors may as well. If the shop is leaving the milk for too long outside, it may be sour. No amount of checking of the cows well-being will reveal that the super-market has a lazy milk handler.
The thing is - if "cows" are fine then the "milk" is fine automatically, but not 'vice versa'.
For your reference (removed irrelevant parts):QuoteLike I said earlier, a 3 MP camera might have fantastic per-pixel performance - and poor image quality. A 36 MP camera might have mediocre per-pixel performance and fantastic image quality. If you purchase a camera in order to obsess with 1:1 displays on your screen, then by all means use per-pixel quality as a guide. If you are interested in photography for the images, I suggest using images as a guide....For me it's all about camera's per-pixel color reproduction performance.I care about images, not pixels. People that obsess with per-pixel image quality seems to be less interested in images that I am.
I mentioned the Foveon X3 as a benchmark for Bayer sensor in terms of resolution (per-pixel color accuracy at low ISO).
I think your falling into the same trap as most when comparing a Foveon with a Bayer. Bayer is only limited relative to Foveon in terms of color fidelity. A layered sensor design is capable of much greater color fidelity and accuracy because its capturing a full quantity of color information at every photosite. That also gives it another slight edge as it does not need a low-pass filter to eliminate color moire, since color moire doesn't exhibit. However Bayer sensors ARE detecting luminance data at every photosite, and there is no question they are capable of discerning a finer gradation of detail than a Foveon sensor...DESPITE the fact that their pixels are interpolated. I'm not sure an 18mp FF sensor is really going to be a significant edge, resolution wise, over a Foveon. But an 18mp APS-C sensor is going to resolve considerably more detail than a 15mp Foveon, and for that matter more detail than a 36.3mp sensor. Similarly, a 46.1mp FF sensor is going to be capable of the same resolving power as an 18mp APS-C.
The three-fold difference in luminance resolution and a far greater number of color pixels, several stops better ISO performance, and much greater spatial resolution, even when factoring in interpolation, gives a significant edge to Bayer in this case.
18mp APS-C sensor is going to resolve considerably more detail than a 15mp FoveonI disagree. 15mp Foveon will give you more 'true data' of what you are shooting, because considerable amount of 18mp Bayer resolution is fake+destroyed, due to false color and AA filter. For screen, 2x2 pixel binning eliminates those problems and gives us Foveon-like quality at 1/4 of the original sensor resolution (~5mp is plenty for screen, including some cropping). For print, 15mp Foveon with 1.5-2x interpolation is an adequate competition for today's 20+mp Bayer output.
It's like saying "I care about milk, not cows" . I'm talking about pixel color accuracy and fake resolution. Have a look at some Sigma DP2 Merrill RAW samples (ISO 100) and you'll see what's the difference between the real 15 megapixel resolution and the fake 18 or 22 megapixel resolution from 7D or 5D3.
Foveon is another area of great hyperbole in photography. An 18 MP Bayer sensor does not have "fake" resolution. There are 18 million sample points of luminance data. And a Foveon sensor does not have 3x its pixels in resolution. 15 MP Foveon has 15 million sample points of luminance data.
Foveon sensors do have more sample points of color data, and this results in better images then a mere count of MP would suggest. That can be seen and should not be denied. But it's not the night and day difference claimed by fans. Nor will they scale to match 30-40 MP Bayer images. This is the hyperbole. Go ahead and photograph a landscape with foliage using the Sigma and a D800e and see how the Sigma fares scaled to match.
With that out of the way, I wish Foveon would have had a chance with a larger and more aggressive company like Nikon or Canon. The technology is interesting. If it could have been pushed up in MP and ISO at a faster pace it might have had a much greater impact on the market. Again, it's not night and day. But it's certainly a strong edge in IQ.
Yes, that is a very good analogy.It's like saying "I care about milk, not cows" .Image quality, dynamic range, high ISO noise, graphs, numbers, SNR (signal to noise ratio) ... all that makes a lot of sense when you know what it is all about. For me it's all about camera's per-pixel color reproduction performance.I care about images, not pixels....
If you are a milk-drinker, the quality of the milk will probably affect the drinking experience. The color of the cow _might_ affect the drinking experience.
So why are you saying that you care more about the cow than the milk (to follow the analogy)?
Image quality, dynamic range, high ISO noise, graphs, numbers, SNR (signal to noise ratio) ... all that makes a lot of sense when you know what it is all about. For me it's all about camera's per-pixel color reproduction performance.I care about images, not pixels. People that obsess with per-pixel image quality seems to be less interested in images that I am.
Per-pixel quality is academically interesting, but if you ever print your images or show them on a display, then that is the final indicator of quality. A 3 megapixel camera might have fantastic per-pixel quality (far better than my 7D), but who cares as long as my 7D takes better images??
...The delays in developing the sensor was apparently a big reason for the big firmware update for the 7D...Reading between the lines:
I'm a former 5d2 owner, and these comments/arguments crack me the hell up. I love this site, but there are TOO MANY FOLKS on here compared to NikonRumors. You know why? Canon loyalists are too frustrated fighting amongst themselves.
For the record, I own the D800 and have none of the left AF/greenish-LCD problems that are overblown. It's FAR from perfect, as well, and frankly I really miss the sheer simplicity of the 5d2. That said, Nikon's UWA lenses are far better and that was my reason for switching. I tried out the D600 at Best Buy today for a long, long time. It's a extremely good DSLR. I wish I'd waited on it and saved myself about $850. Is it 90% of 5d3? I don't even know what in the holy hell that means. It is PHENOMENAL for $2,099!!!! That, my friends, is a fact.
Now let's move on to lenses: We can say the new 24-70/2.8 II is $400-500 more expensive than Nikon's equivalent. But it's also a better lens. So people, to be honest we have to play fair. The 24-120/4.0 VR is every but as good as the 24-105, only...well....it's a better, newer lens. That's why it's higher. Because it covers more range and screw Ken Rockwell. I know that's where most of you people get your info. The reason the following lens from Nikon are MORE EXPENSIVE is because they are NEWER AND BETTER GLASS than Canon's equivalent:
Nikon 50/1.4g or 50/1.8g (VERY GOOD BTW)
85/1.8g (very good BTW)
28/1.8g (very good BTW)
24/1.4g (amazing BTW)
16-35/4.0vr (amazing BTW)
--Nikon will make a 70-200/4.0VR eventually, just like Canon will make a very good UWA eventually. I had the 17-40L, and while good....it was soft in the corners and had other issues. It's funny how no one mentions the very solid Nikon 28-300VR that sells for about $800-900 used. What does Canon's cost???
Be real and enjoy what you own. Don't let these childish squabbles get in the way of enjoying your camera.
All of these lens comparisons forgot one thing...
Nikon 14-24/2.8 $1749
Do you really need something like 70-200/4 to pair with 24-120/4 VR? That's only 80mm extra. Just don't be fooled by cheaper and/or better Nikon bodies. Their lenses are more expensive.
Their lenses are NOT more expensive.
No comments. Google it.People say that in reality (not lab tests, but in less than ideal conditions) D7000 AF is a real pain and it looks like D600 got the same AF system. So, think twice before you jump.
People do NOT say the D7000 has AF troubles. You thought that one up yourself buddy.
Not that anyone needs IS for sports, but I may trade my 5D2 for EOS-M with Foveon X3 sensor in it (which is only good at ISO100-200).
depends on the sport if IS is usefull or not.
i shoot 90% in the ISO 100-800 range.
Looks like all of sudden people only shoot basket players playing in candle light and with a f/5.6 non-IS lens.