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Topics - Jackeatley

General Help Q&A / 550d / T2i Heat and sensor pattens.
August 01, 2014, 05:10:43 PM
Hi all, not a magic lantern problem persay, but magic lantern has really helped me troubleshoot it.

Has anybody else got a 550D / T2I  a little warm and seen flashes of interference or noise across the frame?  It flashes across the frame for 2-3 frames at a time making the shot unusable. Always across the frame horizontally and always in the same place.

I see this when the camera is warm but often before the red thermometer warning, it seems to occur from ISO 800 up but I may have seen it at pushed 400.

I'll go through my projects and see if I can find an example to post.

We often have the 550d as a B or C cam to 7Ds at work, and i've often got it as my A cam. This happens well before the 7Ds start to even sweat obviously. I've never see a 7D do it.

Its been happening however the camera is setup, standard, gripped, ac adapter, ML RC, ML Nightly, no ML. So it appears to be something it does. Has anyone seen it, I'm interested to see if guys in hot places are plagued by it. It drives me mad and i'm in the normally mild UK.
Hi all.

Sorry if this has "cropped" up recently and i've missed it, I search the forums every few months about it.

The last thing I've read was Alex talking about a CMOS register.

Basically I really like Crop mode, it was that for 2 second bursts of 12fps on the 550d that made me buy the 50d. I Noticed that the frame was around the same size as a 2/3" broadcast sensor. So I mounted a ENG zoom lens on there, being a wide range fast zoom, 18x at 1.8 constant.

The issue is as we know that the crop isn't centred in the frame, which means at the wide end at decent res I get vignetting, and If I zoom its really nasty as it veers off to the side.

Is there any ideas about on how it could be fixed. Even partially to get some more sensor use without the vignette?

I'm happy to try recompling the raw rec module for the 50d If we can work out if we can address it to centre.

There's clearly something amiss because digital dolly doesn't really work properly either, could be the slower hardware but I assume its to do with the crop.

For other 50d users, as some of you've asked. I'm after a teleconventor and i'll report back if I can get those ENG lenses to work well on 2x and 3x in non crop mode. 

I also assume that fixing this could open up the possibility of using an PL-EF adapter and some PL S16 and 16mm cine glass.