LCollector wrote:
You are right, you should read the Chinese olympics patriotism threads this guy started in 2008 in this very forum..... ;-). Venusssssssss...enough !
HAHAHA
Yakim Peled wrote:
Why do you wish to use such slow lenses? For me f/4 is slow.....
Happy shooting,
Yakim.
Hi Yakim.
Good to see you back posting more and more, back to your older self.
For me f4 is slow too.
In fact, sometimes I consider f2.8 to be slow too.
If you check my profile, you will see the kind of lenses I own.
It's self-explanatory, really.
In fact, I am even trying really hard to buy a 50mm 1.0!
However, I also own a 500 f4.
If I want to use a 2x tc with it (or two 1.4tc), it's MF territory...
I also plan on buying a 100-400 again in the near future (or it's replacement), and a 1.4tc would make it MF only too.
So AF up to f8 would be great for me!
I guess I will have to buy a series 1 camera again!
So it appears that this is indeed a 1.6x crop as predicted and not the 1.45x crop, that some people talked about, but that leaves the question of noise and how it was handled. The 50D had way too much chroma noise in shadow/dark areas at low ISO of 100 & 200, so hopefully Canon has overcome this issue, but still managed to cram another 3 MP extra on a 1.6x crop sensor.
Here is what the translated press release says about the sensor:
Its onboard CMOS image sensor is a Canon developed its own products. CMOS wafer process into a more sophisticated production process, not only solved the cause of the high pixel area of each pixel to narrow the problem, but also uses a higher photoelectric conversion efficiency of the new photodiode. In improving the pixel sensitivity at the same time, the transistors within a pixel was modified to achieve a higher S / N (signal to noise) ratio. In order to effectively improve the condensing rate, in addition to using non-gap micro-lens technology, also used to reduce the micro-lens to the photodiode from the new technologies, successful beyond the rate of the previous condenser. EOS 7D commonly used ISO sensitivity of 100-6400, extended ISO sensitivity up to 12800. Image signal transmission is the sequence of the single-channel high-speed reading, while in 8-channel high-speed reading. Compared with the EOS 50D is about 1.3 times faster to achieve about 8 / s high-speed continuous shooting. Low-voltage power supply of high-speed amplifiers and a variety of energy-saving measures adopted to achieve the low power consumption.
My guess is that the process or technologies associated with the higher photoelectric conversion efficiency is a patent that Canon has. This may turn out to be a BIG deal.
rsg_1 wrote:
My guess is that the process or technologies associated with the higher photoelectric conversion efficiency is a patent that Canon has. This may turn out to be a BIG deal.
If it is successful in rendering a wide dynamic range, and low noise (without detail-smashing software-based noise reduction), I may buy one. I have guarded skepticism at this time, but hopeful.
Hrow wrote:
Too bad we are a day away from each other or I would invite you out for a beer so we could bemoan the end of intelligent life on this planet.
Tom_W wrote:
If it is successful in rendering a wide dynamic range, and low noise (without detail-smashing software-based noise reduction), I may buy one. I have guarded skepticism at this time, but hopeful.
+1.
I like what I read so far but not till I see the "low noise" shot at ISO1600 then I will buy one
fraga wrote:
Hi Yakim.
Good to see you back posting more and more, back to your older self.
For me f4 is slow too.
In fact, sometimes I consider f2.8 to be slow too.
If you check my profile, you will see the kind of lenses I own.
It's self-explanatory, really.
In fact, I am even trying really hard to buy a 50mm 1.0!
However, I also own a 500 f4.
If I want to use a 2x tc with it (or two 1.4tc), it's MF territory...
I also plan on buying a 100-400 again in the near future (or it's replacement), and a 1.4tc would make it MF only too.
So AF up to f8 would be great for me!
I guess I will have to buy a series 1 camera again! ...Show more →
Thank you. Nice to be back. It's the magical effect of the 7D and 100/2.8 IS.
Regarding the f/8 issue, I still don't like the idea though I understand your PoV. But you do know that it's only linear sensor and it's only the central one and that 2X on 500/4 or 1.4X on 100-400 will all result in less than brilliant AF (to put it mildly), right?
Tom_W wrote:
If it is successful in rendering a wide dynamic range, and low noise (without detail-smashing software-based noise reduction), I may buy one. I have guarded skepticism at this time, but hopeful.
I fear there is virtually no chance of that happening. On the 50D NR is applied even at ISO 100, and I seem to remember that "gapless microlenses" were going to offer "breakthrough noise performance and dynamic range" too....
I guess we will see, but given the higher pixel density and the stated techology improvements, I would expect native sensor noise (prior to Digic IV processing) to be roughly at parity with 50D (which Canon seems to think is okay).
I do certainly agree that 18mp sounds like way too much. I personally would be very happy with about 10-12 from a quality/size/computing standpoint. However I am compelled to point out the following:
10D to 20D/30D was 6.3 to 8.2, roughly a 30% increase.
20D/30D to 40D was 8.2 to 10.1, roughly a 23% increase.
40D to 50D was 10.1 to 15.1, basically a whopping 50% increase.
In all likelihood the increase from 50D to 7D is 15.1 to 18, which is roughly a 19% increase. So percentage wise, this is the smallest increase yet. I feel that is not impossible to believe that a newly designed sensor could outperform an older one in terms of noise and DR, so perhaps there is some hope.
garyvot wrote:
I fear there is virtually no chance of that happening. On the 50D NR is applied even at ISO 100, and I seem to remember that "gapless microlenses" were going to offer "breakthrough noise performance and dynamic range" too....
I guess we will see, but given the higher pixel density and the stated techology improvements, I would expect native sensor noise (prior to Digic IV processing) to be roughly at parity with 50D (which Canon seems to think is okay).
NR is also applied at moderately low ISO settings on the 5D2, though at a very low magnitude. At ISO 200, I see chrominance NR applied at level 1 (scale of 1-10) and Luminance NR at 0. It's 5 for Luminance and 6 for Chrominance at ISO 3200 on the 5D2. This is with in-camera High-ISO NR set at "low", as viewed on the RAW image in DPP.
As I said, I'm somewhat skeptical myself. My 40D couldn't match the original 5D in terms of being able to pull up shadow brightness - at ISO 400 and up, the 40D simply didn't have as great an amount of latitude as the 5. I hope that Canon's sensor and microlens advances have a greater effect than the increase in pixel density.
n0b0 wrote:
All of these info could be intentionally "leaked" by Canon to throw us off the real announcement.
I hope... maybe wishful thinking though... for a camera that has at least a 1.3x sensor.
n0b0 wrote:
All of these info could be intentionally "leaked" by Canon to throw us off the real announcement.
Oh, I think that Canon's loosened the lock on information for this body, but I don't think it's to throw us off. I'm pretty sure that the 7D is coming. The question is, what else is coming (if anything).
n0b0 wrote:
All of these info could be intentionally "leaked" by Canon to throw us off the real announcement.
Man I wish that was true. I want that 1D3 replacement already not "yet another 1.6x crop body"
Paolo Dolina wrote:
Man I wish that was true. I want that 1D3 replacement already not "yet another 1.6x crop body"
Make no mistake- there is DEFINITELY a 1DIIIN or 1DIV coming soon, maybe not at the same time as this 7D but it is imminent.
I think many people are anxious about whether the sensor size on this 7D is actually 1.6x- with those rumored specs, either a 1.3x or FF sensor would be great.
