--
It is the sensor size leading to better IQ in terms of mimicing the real word color, gray toning, better dynamic range, hence better detail as well as noise characteristics. My 40D is a very capable camera. It also has some advantages over my 5dmkII like slightly better AI Servo, more reach due to cropping when normalised to same pixel density etc. Having said in terms of image quality due to sensor (excluding factors due to AF etc) there is no comparison. 5d wins...Not due to only 21mp vs 10mp, but due to larger sensor size. The original 5d has 12mp, still the sensor image quality is more capable than 7d which has 18mp on a 8x12print or 100crop on monitor. It is the physics after all, larger sensor gathers more light, more information meaning better IQ.Everyone is in their own camp and fighting for their body. It's not megapixels that make a camera. It's how the processor handles them. My 40D does a great job with what it does. I would really like to have a full frame to compare it to!!! This is how I feel listening to all this.
FF, your 450D must have some problems then. 7d is slightly better than 40d or 450d on print, but no way it is 2 stops better. Even on a 100% crop level on monitor, my 40D has a better noise performance than 7d. Dont tell me on same sensor size, Canon has achieved 2 stops better ISO performance with a 18mp sensor compared to 12mp and 10mp. What Canon has achieved is similar noise performance with increasing pixels on the sensor which has its other merits as well.
Indeed, but the 7D has a quantum efficiency 50% better than the 5D (which was the worst canon ever made in that respect) which makes up some of the area deficit.
An example...if it wasn't I couldnt throw the frisbee, frame the shot, focus and shoot and get good results all in a second or so....
Just check the sensor performances on graphs of 7d vs original 5d on dxomark sensor database, you will see. Btw I did not get it what you mean by quantum effciency 50% better.
I need to go to bed, it is getting late here. I currently dont own a 7d, have a 40d and 5dmkII. But I had plenty of time to use a 7D to check its AF and IQ. Noise tests I agree are misleading, also many people make the comparisons on 100% crop size on monitor, which is leading to less pixel count sensor showing less noise, having said, the real world performance are most valid on a same size print.
The figure for quantum efficiency was derived from the DxO data by Chrisk99, here.
I meant that the quantum efficiency is 50% better. That means that the 7D converts 50% more of the photons that hit the sensor int electrons which can be registered by the read electronics.
--An example...if it wasn't I couldnt throw the frisbee, frame the shot, focus and shoot and get good results all in a second or so....
Then you must have a malfunctioning 5D2 then if that's the case, seriously. I've never seen anyone state that about the 7D vs. 5D2.
It's possible. The 5DII has the well known Canon pattern noise problem, which might limit the acceptability of low light images (tartan shadows are an interesting effect, but not always what you want). As I understand it, the 7D has less of this problem.Then you must have a malfunctioning 5D2 then if that's the case, seriously. I've never seen anyone state that about the 7D vs. 5D2.
--
