IQ4 150MP getting hot

[Yankov]

Dear All,

I have been a long term Phase One user. Recently upgraded to 150MP.

I believe that the IQ4 150mp is getting quite a bit hotter than the IQ3 100mp. Just turning it on, not shooting vigorously. Anyone got that feeling too?

[Andrew_eaton]

Yep it gets warm... on POE ethernet it get very warm.. the qxd card also puts out some heat... if you click on the temperature on the status page it will give you a breakdown on whats what…

[Yankov]

I worry a bit on this. I mean, first of all, we know that the temperature of the sensor itself is actually going to affect the image quality. Also, I am seeing quite a lot of hot pixels on the screen of the IQ4 (Though not on the final file on computer). The number of hot pixel on the screen in the IQ4 is, well, quite disturbing.

As for POE, well, you are charging the battery, getting hot is kind of normal. But I am not charging it at all..... any thoughts?

[Andrew_eaton]

In the studio on POE I have found the images outstanding, but I shoot on 50 iso so noise really isn't a problem... outside the studio I have had no problems, but it has been about 0c outside so I wouldn't notice. There is plenty of time for firmware improvements

[photoGrant]

Dear All,

I have been a long term Phase One user. Recently upgraded to 150MP.

I believe that the IQ4 150mp is getting quite a bit hotter than the IQ3 100mp. Just turning it on, not shooting vigorously. Anyone got that feeling too?

Could you share the temps you're worried about?

[C-M-B]

Also, I am seeing quite a lot of hot pixels on the screen of the IQ4 (Though not on the final file on computer). The number of hot pixel on the screen in the IQ4 is, well, quite disturbing.

Capture One is very good at removing hot pixels from the files produced by its backs at low ISO and during short exposures. If you were to open them with a program that does not remove hot pixels automatically, you'd see them.

[photoGrant]

Also, I am seeing quite a lot of hot pixels on the screen of the IQ4 (Though not on the final file on computer). The number of hot pixel on the screen in the IQ4 is, well, quite disturbing.

That would be worth a chat with your rep or phase or whatever. There's definitely an acceptable cutoff for white pixels. The sauce to remap them is a Sony thing probably first and foremost. Phase in software might mask the rest of it, who knows.

Also, the higher your camera goes (flying/etc) the more unfortunate /cosmic rays/ have an effect on your sensor. Don't think there's any evidence out there regarding the rate of degradation I'm sure it's minimal visually as they increase pixel density but something to chew on.

[TobiasSagmeister]

Also, I am seeing quite a lot of hot pixels on the screen of the IQ4 (Though not on the final file on computer). The number of hot pixel on the screen in the IQ4 is, well, quite disturbing.

done now around 10k photos with the IQ150 and also realizing that there are more and more hot pixels.
And yes the temperature in the back is much more than it was in the IQ50.


will see in the following months if the pixels become more, never hat a camera with that many hot pixels after such a Short time.

[NNN636464871536111069]

I just got an IQ4 and XF rig and I feel it is quite hot as well. I shot it with my digital inferred thermometer and the back can get up to 130 deg F. Cant touch it for very long. One time it went into overheat mode and gave me a warning then shut down when I was shooting in an 80 degree room. I held it in front if a fan for 5 minutes then it came back on. I stopped using live view for the rest of the 3 hour shoot and all was well. I didn't measure the temp after that. All the pictures were amazing though, and tech support doesn't know how hot is too hot, I guess Phase one does because they made the camera shut itself down before meltdown.

[C-M-B]

Well you have to consider that the size of the digital back has been the same for decades but the technology has grown and more computational power is needed for every image than ever before.
So it's only natural that heat is also being produced and transfered to the outside.

Since the back does not feauture a cooling fan all the heat has to disapate on its own - which is not an easy task. And a warmer sensor is more likely to produce hot pixels

The good thing is that Capture One is great in filtering out all those hotpixels but..well...it can't be good for the sensor on the long run. Plus if the amount of hot pixels continues to rise it will (after a certain point) diminish the amount of detail that's visible in the shots...