Has anybody brought up the issue of sensor tempeture while using the live view function? Or has it been discussed by Canon? I haven't seen anything yet.
I know the 1DsMKII's sensor can get hot enough while doing long exposures to cause color cast problems (for instance, a quarter of the shot looking solid green). I've just been wondering if there there will be any similar problems with the live view in the 1D3.
I think there's a lot of ways to interpret Canon's statement about sensor cost:
1) Sensor cost has dropped due to more efficient manufacturing technology.
2) Sensor cost is less due to it's "H" size vs FF. (better yields)
3) Sensor quality ain't what it used to be. (Sam's contention)
Personally I took Canon's statement as being #1. I'm sure they save the best quality raw CMOS material for the high end bodies and use the marginal stuff in the XTi (if that's even an actual issue.)
As far as the live view goes, that may bring photographs with the burnt edge look back into style!
Nill Toulme wrote:
Sam I thought the interference banding was the result of the camera's construction, not the sensor itself?
It's never been conclusively established what causes it. I think a lot of it has to do with the voltage the camera runs at - the MKIII is still a higher voltage camera, so who knows? I'm still skeptical and will wait to hear reports from high ISO sports shooters before I dive in head-first.
pangwinking wrote:
Has anybody brought up the issue of sensor tempeture while using the live view function? Or has it been discussed by Canon? I haven't seen anything yet.
I know the 1DsMKII's sensor can get hot enough while doing long exposures to cause color cast problems (for instance, a quarter of the shot looking solid green). I've just been wondering if there there will be any similar problems with the live view in the 1D3.
Canon does mention it. They talk about how there's actually a temperature sensor and warning system for use in Live View mode to alert users that they may need to back off to maintain image quality.
Sam Bennett wrote:
Canon does mention it. They talk about how there's actually a temperature sensor and warning system for use in Live View mode to alert users that they may need to back off to maintain image quality.
Hmm. I wonder how long you get before that warning comes on?
According to page 27 of the white paper, the temperature warning system is pretty sophisticated. First of all, it is supposed to be of some issue only under studio lights and direct sunshine. Secondly, if the warning is triggered, it doesn't prevent you from continuing. If the temperature keeps on rising after the warning and if you are using hard drive CF cards, only then the camera will switch off the Live View mode to let the camera's internal temperature to cool down.
Koivulehto wrote:
According to page 27 of the white paper, the temperature warning system is pretty sophisticated. First of all, it is supposed to be of some issue only under studio lights and direct sunshine. Secondly, if the warning is triggered, it doesn't prevent you from continuing. If the temperature keeps on rising after the warning and if you are using hard drive CF cards, only then the camera will switch off the Live View mode to let the camera's internal temperature to cool down.
Studio Lights & Sun light = heat
As heat increases, it triggers a temperature sensor and tells the camera to get out of live view mode.
Sam Bennett wrote:
It's never been conclusively established what causes it. I think a lot of it has to do with the voltage the camera runs at - the MKIII is still a higher voltage camera, so who knows? I'm still skeptical and will wait to hear reports from high ISO sports shooters before I dive in head-first.
I'm not aware if there are any comercial image editing software available right now that can remove banding, but it can be done using specialized programs such as MATLAB. You'll have to convert the image into the frequency domain using Fourier Transforms, mask out the sinusoidal 'noise' (banding) manually and convert it back into an image using the inverse Fourier Transform. It's the same idea as tweaking an equalizer to filter out specific frequencies in your iPod or home stereo. It can be done, but requires a bit of scripting and knowledge of math and signal processing. The benefit of this process is that there is no lost in image quality.
beewee wrote:
I'm not aware if there are any comercial image editing software available right now that can remove banding, but it can be done using specialized programs such as MATLAB. You'll have to convert the image into the frequency domain using Fourier Transforms, mask out the sinusoidal 'noise' (banding) manually and convert it back into an image using the inverse Fourier Transform. It's the same idea as tweaking an equalizer to filter out specific frequencies in your iPod or home stereo. It can be done, but requires a bit of scripting and knowledge of math and signal processing. The benefit of this process is that there is no lost in image quality....Show more →
Well, once there's a MATLAB plugin for Lightroom so I can do this the second before I sell/print a photo I shot 2 minutes ago, I'm all over it!
The 10 FPS of the Mark III is intended for the "paparazzi" photographer. I remember reading it on Page 5 of the 63-page Canon "white paper" on the Mark III that said: "Paparazzi of the world, your new camera has arrived."
As one who has just started doing paparazzi work in Hollywood all I can say is that the Mark III is "the" camera for the paparazzi---where a split-second (at 10 frames-a-second) can mean that big "money shot."
If you've been with a group of paparazzis---you'll know what I mean that the Mark III's 10 FPS was made with them in mind.....
I called Calumet's 800 line and they said 3 weeks for certain.
when did you call the 800 line the sales guy at the SF store said the 15th was supposed to be the day but commented that he felt it would be later in the month before they arrived.
I called two days ago when I put in my order. But they haven't updated their site with a final price so I can't imagine they have shipped or arrived yet.
