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Showing results for tags 'SLOG-2'.
Hi folks, As far as I know, very little has been said about this. However, Convergent Design has recently stated that Sony has the A7s HDMI port locked to a gamma curve that is closer to REC 709 than true SLOG-2. It's true, I have tested this myself and the A7s destroys it's SLOG-2 gamma curve on it's HDMI port. Here is what happens: 1.) Record a SLOG-2 internal XAVC-S file. 2.) Record via HDMI to any recorder that you have. 3.) Compare both files on a scope...you will see that the SLOG-2 gamma curve has been stretched and "damaged". (compared to internal file's "proper" curve on the scope) The histogram does not lie either, it CLEARLY shows what Sony is doing to cripple it's HDMI port. (hopefully this is a Sony oversight and not a "surprise...gotcha!" stunt. Sony markets its A7s external recording HEAVILY against the GH4 and it's a big selling point for the A7s. SLOG-2 in general is a HUGE selling feature of this camera. Now, if Sony chooses to cripple SLOG-2 over the port and trap it inside it's internal 4:2:0 codec,...that is perfectly well within their right. (No doubt at all) However, Sony needs to state this is being done in it's marketing and sales materials!! Sony needs to be upfront about it when they push it's external recording capability! Statements like: * "SLOG-2 has been removed from any external recording" or * "What is displayed on the camera monitor (gamma curve) is NOT what is actually output over HDMI. This would be the FAIR way to treat Sony's customers. This is a huge problem and I hope Sony fixes this soon. Am I the only A7s owner that is concerned about this?