Hi,
just bought an excellent 16-35 F/2.8 L USM II second hand and tested it at insane ISOs yesterday...
My youngest son liked it...After a few tests in the past six month I guess, if you wanna get a decent b/w, 51k for the 5D3 is the limit with a light source like this. But I am more than happy, to be able to push things that far. Everything done in DPP, NR at about 14/18.

Z96A3565bBWKLEINALT by Peter Hauri, on Flickr
ISO 51200

Z96A3556bBWKLEIN by Peter Hauri, on Flickr
ISO 102400
just bought an excellent 16-35 F/2.8 L USM II second hand and tested it at insane ISOs yesterday...
My youngest son liked it...After a few tests in the past six month I guess, if you wanna get a decent b/w, 51k for the 5D3 is the limit with a light source like this. But I am more than happy, to be able to push things that far. Everything done in DPP, NR at about 14/18.

Z96A3565bBWKLEINALT by Peter Hauri, on Flickr
ISO 51200

Z96A3556bBWKLEIN by Peter Hauri, on Flickr
ISO 102400