Panasonic DC-GH6 Sensor Measurements at PhotonsToPhotos

bclaff wrote:

Pete Berry wrote:

AURA PA wrote:

Pete Berry wrote:

So to play Devil's advocate, Bill, 7 of the past 8 Panny m4/3s you've tested have shown higher PDR's than the OM-1 - as have all three of the Olys sharing the E-M1-III sensor, The G9 eclipses the OM-1 by a whopping 0.76 EV.

Not so much. The 20MP Sony sensors had the same DR with little actual variance. The "peak" you're looking comes at the expense of color accuracy as explained previously .

So surely the OM-1 was designed with only mediocre stills in mind, along with its sub-class video performance!

Obviously haven't used one. It is the most complete M43 camera to date.

Having both the G9 and GH6 I've yet to experience any significant low-iso photographic difference in DR, and appreciate the 5MP frame increase.

Just don't lift the shadows and you'll be fine.

Whatever...

Below, tight crop for 12x16" print from above. Shadows boosted 95% in ACR

That's not a high dynamic range scene, dark cormorant with shadow on neck.

But push the neck hard and you get this.

Bill, while I appreciate your incredible work with comparative sensor characteristics, this is really pretty silly! Push anything hard enough and it falls apart - reductio ad absurdum.

I was surprised to see the clearly defined pale blue eye emerge from the very dark background, with blacks a dense as 8-bit RGB 4-4-2

Pete Berry wrote:

bclaff wrote:

Pete Berry wrote:

AURA PA wrote:

Pete Berry wrote:

So to play Devil's advocate, Bill, 7 of the past 8 Panny m4/3s you've tested have shown higher PDR's than the OM-1 - as have all three of the Olys sharing the E-M1-III sensor, The G9 eclipses the OM-1 by a whopping 0.76 EV.

Not so much. The 20MP Sony sensors had the same DR with little actual variance. The "peak" you're looking comes at the expense of color accuracy as explained previously .

So surely the OM-1 was designed with only mediocre stills in mind, along with its sub-class video performance!

Obviously haven't used one. It is the most complete M43 camera to date.

Having both the G9 and GH6 I've yet to experience any significant low-iso photographic difference in DR, and appreciate the 5MP frame increase.

Just don't lift the shadows and you'll be fine.

Whatever...

Below, tight crop for 12x16" print from above. Shadows boosted 95% in ACR

That's not a high dynamic range scene, dark cormorant with shadow on neck.

But push the neck hard and you get this.

Bill, while I appreciate your incredible work with comparative sensor characteristics, this is really pretty silly! Push anything hard enough and it falls apart - reductio ad absurdum.

Nevertheless, you can push most other current generation mFT cameras even harder, and they will hold up better than the GH6 with respect to shadow noise in stills. You can easily see for yourself by using the exposure latitude comp tool here. (Note the lower noise levels in the GH5ii, OM1 and EM1x despite all three of them having lower exposures than the GH6.

Interceptor121 wrote:

bclaff wrote:

Pete Berry wrote:

AURA PA wrote:

Pete Berry wrote:

So to play Devil's advocate, Bill, 7 of the past 8 Panny m4/3s you've tested have shown higher PDR's than the OM-1 - as have all three of the Olys sharing the E-M1-III sensor, The G9 eclipses the OM-1 by a whopping 0.76 EV.

Not so much. The 20MP Sony sensors had the same DR with little actual variance. The "peak" you're looking comes at the expense of color accuracy as explained previously .

So surely the OM-1 was designed with only mediocre stills in mind, along with its sub-class video performance!

Obviously haven't used one. It is the most complete M43 camera to date.

Having both the G9 and GH6 I've yet to experience any significant low-iso photographic difference in DR, and appreciate the 5MP frame increase.

Just don't lift the shadows and you'll be fine.

Whatever...

Below, tight crop for 12x16" print from above. Shadows boosted 95% in ACR

That's not a high dynamic range scene, dark cormorant with shadow on neck.

But push the neck hard and you get this.

The GH6 does not have good deep blacks this is what you see creeping here

A camera with good blacks will resist manipulations of shadow better than another with better DR but worse blacks

In the case of the GH6 I can say the GH5M2 can take a lot more beating and even more of the G9 as it has better blacks

I guess I need to be enlightened about how you define "better blacks" as a sensor characteristic. The GH6 gives what I consider good looking JPG blacks. As does my GH9.  I've not seen a weakness in GH6 prints, but I of course PP them to taste.