GH5 using Ex Tele Conv in video mode

[Peter Berry]

great to hear all of this
I'm a documentary shooter who shoots a lot in a day so 4K is out of the way for me as it would need to much SD cards and would be ridiculously expensive in hard drives

when using ETC in HD, does it still crops 'safely' in the 4K sensor or does it crops in the HD image ?

ETC in 1080p mode crops to the central 1080x1920 pixels of the sensor, for a 5.4X total crop factor. In 4K + ETC, it crops to the central 3840x2160 for a 2.7X total crop factor. Add 2X dig. zoom to this for 5.4X - same resolution as ETC in 1080p - but up-sampled to UHD dimensions. Comparing this to the 1080 + ETC, it's a bit more detailed with better gradation and slightly less noise in my comparisons.

 

[flinty]

Well i have not tried the 2x digital with EtC in 4k recording but i have now done some tests recording static wildlife and a test card with ETC in HD and 4k using my best pro lens,i post cropped the 4k to an identical crop as the HD then rendered in 4K and try as i have they look identical on my large screen tv,i would have thought the 4K recorded clips would be better.

 

[coutard]

thanks for all info
used it to shoot some deers in the forest few days ago, very useful indeed...

 

[flinty]

ETC in 1080p mode crops to the central 1080x1920 pixels of the sensor, for a 5.4X total crop factor. In 4K + ETC, it crops to the central 3840x2160 for a 2.7X total crop factor. Add 2X dig. zoom to this for 5.4X - same resolution as ETC in 1080p - but up-sampled to UHD dimensions. Comparing this to the 1080 + ETC, it's a bit more detailed with better gradation and slightly less noise in my comparisons.

Thanks for giving me the thought of using ETC and 2x digital mode together,i just assumed digital zoom would not look good,i have found in 4k mode ETC and 2x digital zoom looks great even using my Olympus 300mm f4 plus 1.4x extender in these modes which is a pretty long reach.

 

[Peter Berry]

Thanks for giving me the thought of using ETC and 2x digital mode together,i just assumed digital zoom would not look good,i have found in 4k mode ETC and 2x digital zoom looks great even using my Olympus 300mm f4 plus 1.4x extender in these modes which is a pretty long reach.

You're welcomed. It has the effect at normal "big screen" UHD TV viewing distances of much more detail, but will be about the same as viewing 4K UHD without 2X from 3-4 ft.from a 55" UHD screen.