EspenB

1 minute ago, Andrew Reid said:

New info

I am told they are indeed using a multi-aspect sensor.

It measures 18.9mm x 13mm in approx. 3:2 aspect ratio

20MP stills but the total resolution of the chip is 24MP

24MP 3:2 is approximately 6000 x 4000 (just like the Sony A6300 in 3:2 stills mode).

Then the 6K photo mode is 3:2 with full sensor readout up to 30fps burst.

The normal stills mode is a 20MP 4:3 crop of the sensor. This is why 43rumours say 20MP sensor.

The 4K video is a 16:9 crop of the sensor using the full 6K width but downsampling on the chip.

Absolutely take this is a rumour until confirmed.

But it makes total sensor to me... There is *no other way* of getting 6K photos from a 20MP 4:3 sensor like that featured on the GX8.

Yep, its the rumored multi aspect sensor from may. It has the same sensor dimensions as the previous GH2.

32 minutes ago, theSUBVERSIVE said:

The GH6 might skip 6K since Panasonic is planning to have an 8K line up for Tokyo 2020 and by then, the organic sensor might be a real thing.

The table is just illustrative, the 20MP sensor in the table is probably the 20MP already in use by Panasonic and Sony, so the 27fps max frame rate is for that sensor. The specs of the rumour is not listed anywhere, 43Rumors's admin ended up causing confusion by posting the listed 4/3 sensor from Sony's page. If you read the post, you will see that it's just rumored, not proved, so obviously it won't be listed at Sony's page. Moreover, it's a multi-aspect sensor, it could have 20MP for stills but the total MP would be higher, around 22MP.

Yes, current 20 megapixel sensor is 27 fps at 12 ch readout.

The new sensor is 24 channels read out and multi aspect (18.9mm*13mm).

Compared to a regular 4/3rds sensor (17.3 x 13 mm) that new sensor seems to have an aspect of 1.45 (vs 1.33 for standard).

 

EDIT: The GH2 sensor is also approx 19 mm wide in video mode.

(DPReview says the GH2 sensor is only 18.89mm on the long dimension)

 

re: B-frames

Neither P og B frames is worse than I frames quality wise if the quantization level is identical.

All prediction in the encoder is done on the allready compressed frames, so there is no accumulation of the prediction error (which is what is stored for P and B frames).