E-Shutter readout speed/rolling shutter

I am having trouble finding accurate data for the still image electronic shutter readout speeds.  I know the X-H2S is the fastest of the bunch, but I am seeing conflicting numbers that potentially show that the X-T3 is faster than the X-H2.  Also, much of the data I am finding is for specific video modes, which is not too useful as it is highly dependent on bit rate, frame rate, and resolution.

Has anyone here done the testing, or can point me to accurate numbers for still image full sensor readout speeds, specifically for the X-T3/X-T4, X-H2 and X-H2S?

I currently use the X-T3 and am not sure I want to go all of the way to the X-H2S.  I would prefer the X-T5, but not if the readout speed will be slower.

Oh how I wish this data was part of the standard DPReview spec' sheet.

Lukedriftwood wrote:

nnowak wrote:

Has anyone here done the testing, or can point me to accurate numbers for still image full sensor readout speeds, specifically for the X-T3/X-T4, X-H2 and X-H2S?

X-T3/X-T4: 1/40s

X-H2: 1/40s

X-H2s: 1/80s

If I`m reading this correctly, it should mean X-H2 (with its 40 MP) is on the same level _frame-wise_ (reading the whole sensor) as X-T3/X-T4 (with their 26 MP)...?

If so, that should also mean X-H2 is reading each single sensor line faster than X-T3/X-T4 (as it has more lines to read, due to higher resolution, yet still does it in the same time-frame), but in general, overall performance should be pretty much similar (not to say the same)?

Would that make the rolling shutter pretty much on-par, too, or higher resolution makes a difference (for better or worse)?

I sold the XT3 and got a XH2s. I have posted in the forum sevral series of BIF shots all in ES without any visible rolling shutter effect. The readout of the sensor seems fast enough to avoid that in many shooting situations.

I mainly shoot now in ES without specific issue. No numeric data about reading speed however, but certainly a big difference ref XT3

I'm about as technical as a old bit of wood so there's a good chance I'm wrong on this! But... I would imagine some machine or software that is capable of accurately timing electronic shutters charge and read out like this to thousandth of a second would be so incredibly niche and specialist it's probably out of reach of review sites, even the mighty DPReview!

nnowak wrote:

Alan Hewitt Photo wrote:

I'm about as technical as a old bit of wood so there's a good chance I'm wrong on this! But... I would imagine some machine or software that is capable of accurately timing electronic shutters charge and read out like this to thousandth of a second would be so incredibly niche and specialist it's probably out of reach of review sites, even the mighty DPReview!

There is no need for anything that complicated. One of the simplest methods uses standard household LED lights. Some (many?) of these lights will flicker at a rate that is double the mains frequency. If you use E-shutter to photograph a light colored wall illuminated by one of these flickering LEDs, your photograph will have regularly alternating light and dark bands. If you know the flicker frequency of the LEDs and count the number of bands, it is simple math to calculate the readout speed. This method won't give you an answer down to the last decimal place, but it will easily distinguish between 1/30 and 1/60.

Thanks! I had an inkling there would be a more practical method.

catastrophe wrote:

H2s 1/160 x-t4 1/40 h2 1/28

https://www.youtube.com/watch?v=oqT-FKiyKso

Hmm, interesting, quite a comprehensive list of cameras he has there... Does he say what his sources are? Or he measures/calculates it himself?

Here`s the exact moment where the table is shown:
https://youtu.be/oqT-FKiyKso?t=361

If those numbers are true, it would basically mean the sensor readout _per line_ (or per pixel, if that even makes sense) is pretty much the same between X-T4 and X-H2, but then higher MP (thus more lines/pixels) causes X-H2 sensor to be read slower in general (whole sensor)...?

catastrophe wrote:

H2s 1/160 x-t4 1/40 h2 1/28

https://www.youtube.com/watch?v=oqT-FKiyKso

I'm curious what X-Trans 3 figure is (X-T2, X-H1, etc.)

I'm comfortable with electronic shutter performance from those cameras in many situations but would hesitate to use anything slower.

Dem Bell wrote:

7rvar wrote:

catastrophe wrote:

H2s 1/160 x-t4 1/40 h2 1/28

https://www.youtube.com/watch?v=oqT-FKiyKso

I'm curious what X-Trans 3 figure is (X-T2, X-H1, etc.)

from memory 1/25 s. You've got the X-H1 listed in your gear, you can measure it.

I'm comfortable with electronic shutter performance from those cameras in many situations but would hesitate to use anything slower.

I thank you for sharing the methodology, and while it pains me to say, I just want someone to spoon feed me the info. I would have to write a blog about it or something to justify testing myself.

Searching has suggested

X-Trans II ~1/15s

X-Trans III ~1/30s

I have cameras from all but the latest (X-H2 & X-H2s generations) so perhaps I will test it out sometime. Really an intriguing figure for X-H2s though.

nnowak wrote:

catastrophe wrote:

H2s 1/160 x-t4 1/40 h2 1/28

https://www.youtube.com/watch?v=oqT-FKiyKso

Hmm. Some of those numbers contradict those posted above by Lukedriftwood. Another curiosity is the Nikon Z9 is listed as 1/270 in that video, and I could have sworn Nikon explicitly stated it was 1/200.

Yeah, seeming informed, I`m also interested in what Lukedriftwood has to say (if anything, besides the numbers he shared already).