[Pete Burger]

Glad, if could help you!

Did a quick search on youtube and found that

https://www.youtube.com/watch?v=LVS83PNexQI

Just look for “different shutter speed” or “shutter speed test” or something like that.

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[Pete Burger]

Could be a “hot pixel”

https://nofilmschool.com/dslr/stuck-pixels/

Or dust on your sensor…

[Pete Burger]

Oh, I see!

Well, it depends on, what you’re shooting…
When working “cinematic” the standard for 25p would be 50fps.

When going higher, you will lose the typical motion blur, so you’ll get some kind of strobo effect, because every frame and every phase of motion is sharp. That can be – of course – a wanted effect (best known example: “James Ryan”).

When going to 40 or even 30 fps, all motion will become smoother.

Do some test shoots, render them out in your final output medium. Then decide what you (or your client?) likes and shoot with that framerate.

Shutter speed is more or less a creative and only to a small degree (i.e. matching flickering lights, tv etc… or the sheer need of more or fewer light) a technical decision.

Technically you can shoot in any framerate you want, but maybe you don’t like the outcome 😉

Hope this helps

[Pete Burger]

I’m not sure if I got your question right, but in the “movie menu” you can set your 550D to either 1920x1080p with 25fps or to 1920x1080p with 24fps, when set to PAL. If you want to shoot 50p, the 550D can only provide 1280x720P (that’s maybe what you mean by 750p).

So, when set to PAL, your camera will give you either 25p or 24p in 1080 and nothing else…

The 50p mode is (to my knowledge) only needed, when shooting high quality slomos.

Hope this helps a bit!

[Pete Burger]

I mean “Thanks, Julius!” and of course thanks to Tomo for starting this thread

[Pete Burger]

Maybe your framerate doesn’t match the flickering of the surrounding light, e.g. your shooting with 60 and the lights are working with 50Hz (sorry for my english).
Just a suggestion…

[Pete Burger]

Thanks, Tomo! Much appreciated!

[Pete Burger]

Shot a couple of greenscreen and bluescreen clips with the 550D and had no problems with them.
Being able to defocus the background more easily than with “standard” camcorders, will help in the keying process.
As Noah wrote, a well lit screen is essential.

[Pete Burger]

FAT16 is not usable for your camera, but you can try to format the card with your computer and then try it again with your camera. If the camera recognizes the card, re-format it with the low-level-format option. If not… well… the card my be damaged and you can throw it away

[Pete Burger]

You can write about 25min of video on an 8GB card. Notice that files can’t be lager than 4GB, so you can write two files of about 12 minutes on that card.