X100F and X-T20 Sensor Measurements at PhotonsToPhotos

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bclaff Veteran Member • Posts: 5,110
X100F and X-T20 Sensor Measurements at PhotonsToPhotos
4

As expected these sensor measurements are pretty close to the X-T2 :

Dual conversion gain with Low Conversion Gain (LCG) at ISO 200 and High Conversion Gain (HGC) at ISO 800.

I seem to be having trouble getting consistent Photographic Dynamic Range (PDR) measurements;

I'm looking into why the curves aren't smoother and as close together as expected.

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Bill ( Your trusted source for independent sensor data at http://www.PhotonsToPhotos.net )

Fujifilm X100F Fujifilm X-T2 Fujifilm X-T20
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Advent1sam
Advent1sam Senior Member • Posts: 3,901
Re: X100F and X-T20 Sensor Measurements at PhotonsToPhotos
1

Thank you, I feel as if my x-t20 meters better than the x-pro2 though, less blown highlights.

bclaff wrote:

As expected these sensor measurements are pretty close to the X-T2 :

Dual conversion gain with Low Conversion Gain (LCG) at ISO 200 and High Conversion Gain (HGC) at ISO 800.

I seem to be having trouble getting consistent Photographic Dynamic Range (PDR) measurements;

I'm looking into why the curves aren't smoother and as close together as expected.

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Bill ( Your trusted source for independent sensor data at http://www.PhotonsToPhotos.net )

OP bclaff Veteran Member • Posts: 5,110
Re: X100F and X-T20 Sensor Measurements at PhotonsToPhotos

Advent1sam wrote:

Thank you, I feel as if my x-t20 meters better than the x-pro2 though, less blown highlights.

Metering is something else I've recently started to test.
I'll let you know if I get any results in this area.

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Bill ( Your trusted source for independent sensor data at http://www.PhotonsToPhotos.net )

GXAlan Forum Member • Posts: 66
Re: X100F and X-T20 Sensor Measurements at PhotonsToPhotos

How much of that do you think might be due to temperature changes between the setups? With that low of read noise, small changes could make a difference?

Guessing, the X-T2 supposedly has the biggest heatsink so one might expect better performance from the X-T2 anywhere thermal issues arise.  There may be sensor binning between X-T20 vs X100F vs Xpro2

OP bclaff Veteran Member • Posts: 5,110
Re: X100F and X-T20 Sensor Measurements at PhotonsToPhotos

GXAlan wrote:

How much of that do you think might be due to temperature changes between the setups? With that low of read noise, small changes could make a difference?

Guessing, the X-T2 supposedly has the biggest heatsink so one might expect better performance from the X-T2 anywhere thermal issues arise. There may be sensor binning between X-T20 vs X100F vs Xpro2

I'm more surprised by the lack of smoothness.
If it's temperature then that would be between shots. Possible I suppose.

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Bill ( Your trusted source for independent sensor data at http://www.PhotonsToPhotos.net )

debo Senior Member • Posts: 1,981
why is the T2 ahead of the others....

Your site is awesome. Wondering if there is a simple reason for the T2 have better performance while having the same sensor? Better cooling? The gap is non trivial at high ISO.

 debo's gear list:debo's gear list
Fujifilm FinePix X100 Sony RX1 Fujifilm X-Pro1 Fujifilm X-E2 Fujifilm XF 35mm F1.4 R +4 more
OP bclaff Veteran Member • Posts: 5,110
Re: why is the T2 ahead of the others....

debo wrote:

Your site is awesome.

Thanks. It's not my "day job" but I put a great deal of effort into it.

Wondering if there is a simple reason for the T2 have better performance while having the same sensor? Better cooling? The gap is non trivial at high ISO.

I'm not sure the gap is real given the other numbers such as read noise.
I have more faith in the read noise numbers than PDR for the Fujifilm cameras.
Not sure what (technically) is behind it.

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Bill ( Your trusted source for independent sensor data at http://www.PhotonsToPhotos.net )

debo Senior Member • Posts: 1,981
Re: why is the T2 ahead of the others....

Got it ... the PDR stuff is a little strange. The older cameras like the X-Pro1 and the X-E2 have  better perf than any of the new cameras at ISO 6400

 debo's gear list:debo's gear list
Fujifilm FinePix X100 Sony RX1 Fujifilm X-Pro1 Fujifilm X-E2 Fujifilm XF 35mm F1.4 R +4 more
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