X-H2s First job impression / Control comments

Morris0 wrote:

gillesC wrote:

Powerdoc wrote:

Rumle wrote:

bleachfix wrote:

I hope you get used to it, they don't sound like huge problems.

Curious if you had the opertunity to test for banding with electronic shutter? The XT4 sometimes has strong banding at higher shutter speeds with LED lights.

I did actually, and I know what you mean with the LED lights and X-T4, but I did not have that problem yesterday at all, But in theory it should be less of a problem with the high readout, but you can never truly remove this problem as this is just how LED lights work, and you will find this to be an issue even with Film cameras, its just less emphasized with a shutter.

yes, the Nikon Z9 has a problem with some kind of LED light, and it's truly annoying for photographers. At the contrary of Fuji, the Nikon has no mechanical shutter (but the faster readout of all camera of the market)

Nikon came out today with a firmware update to solve the flickering issue from what I saw.

Yes, they are now stating they have solved the problem that they used to state did not exist. Time will tell.

Morris

It is a misnomer that rolling shutter is limited to electronic shutter.  In most still images the exposure time is long enough that the entire sensor is exposed by a mechanical shutter.  The flash synchronization time is the critical time.  If the sync time is say 1/250 that means for exposures longer than 4 msec - the shutter is completely open.  On the other hand if the exposure time is 1 msec (1/1000), the slit separation in the shutter is less than the width of the shutter and hence to top part (or bottom depending on the direction of the shutter opening ) will be exposed at a different time than the bottom just the same as on an electrical shutter.  So one can experience rolling shutter with either.

In the past the read time of a sensor was much slower than the physical speed of the shutter so the sync time for the ES was significantly less that the mechanical shutter.

Nikon thinks that the stacked sensor in the Z9 has comparable shutter times to a mechanical shutter so that there is no greater risk of rolling shutter or banding with the ES than the MS.  Solid state lighting will always be potentially an issue because of the high rate of flicker.

We'll see if Nikon is right.  But rolling shutter is an issue with one part of the sensor exposed at a different time as another part.  It happens with an ES because the read out happens at different times.  It happens in a MS because the shutter slit is narrower than the sensor.  But it happens in both.

Here is a good illustration from Slow Mo Guy that shows that over about 1/1000 sec - a mechanical shutter will also suffer from rolling shutter. You can see curved baseball bats and golf clubs.  We notice more on ES because of the read times.  Nikon thinks the new generation of stacked sensors will  bring ES and MS closer.  We will soon see.  There have been some reports of the digital light panels causing banding on the Z9.  But that is probably pretty much an edge case.

Eventually we will have global shutters.  Most CCD cameras have global shutters.  One of the limitations of CMOS is the sensor is read out line by line.  But given the power requirements and cost differences - CMOS turns out to be the winner for consumer cameras.  For high precision scientific cameras - the trade offs are different.