Movie Crop Mode (600D) vs centered 5x zoom

Started by lightwriter, May 12, 2020, 03:37:14 PM

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lightwriter

Hi there!

I have a 700D, and installed the 4K raw video recording; lossless compression experiment. I have some questions:

- If I choose Movie crop mode (600D movie crop-mode), my maximum resolution is 1800x1012 with 4.66 crop; choosing centered 5x zoom mode I am able to get 2000x852 2.35:1 for about 20 seconds. Both modes avoid aliasing, correct?

-I have the 10-18mm STM, so this means I have the equivalent of 10x4,66=46,6mm in the first case, is this right?

- When I choose either of the crop modes do I lose light gathering capability? i.e., since I'm recording from a smaller portion of the sensor, does this mean I'll have more noise?

- When I choose the 5x zoom mode and I override the slow correct framing with the half-shutter, and I try to change my shutter speed the Canon menu appears and show 1/80 of a second, for example, while the ML menu shows at the same time 1/49 of the second. Is this normal? It's the ML reading I should trust, right?

Thank you for your attention!