Ho provato la Z9 di Pinsher68

“ Ma soprattutto...come va il mirino? Te lo chiedo io prima che lo faccia IzanagiMrGreen „

“ Il mirino rasenta la perfezione e,al momento NON HA RIVALI,in grado di sfidarlo su questo campo. „

“ The Z9 features a fully-electronic shutter, rather than a mechanical or hybrid shutter. I know you've had some issues with the dreaded 'LED banding' on advertising screens – can you talk me through it?

To date, I've shot about ten professional jobs with the Z9, covering four different sports, indoors and outdoors, and it's been an issue – I won't call it a problem, as such – in about half of the places I've been to.

There are two things that are concerning to me – concerning with a small 'c'. One is that the effect changes from venue to venue, I assume because the LED boards themselves are different [editor's note - exposure time is another potential variable] .

The other thing that's annoying is that even when the LED board is out of focus in the background, the banding is always pin sharp. So it looks like someone's taken a ruler and a pencil and drawn a line over that soft blurry part of the image.

It's pretty much impossible now to shoot professional sports without those advertising boards in the frame - that's why they're there, to be seen by TV cameras and in photos. In my world, there are always LED boards in the background. Also, at a lot of indoor sporting events now they'll bring the team out through a sort of LED arch with the sponsor logos on it. And of course if you're there working for that sponsor, you need that logo clearly visible in the image. Even for news photographers for example at a political conference, where a party leader stands up in front of an LED display board, with a message on it. Sometimes you'd want that message to be part of your picture.

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“ ...Aprite le porte e lasciate che la REALTA' irrompa... „

“ Avete letto questa intervista dove il fotografo sportivo Mark Pain dichiara che per le foto con cartelloni a led sullo sfondo (sostanzialmente tutto il calcio ed una bella quantità di altri sport) non può usare la Z9 con solo otturatore elettronico perchè crea delle righe nei cartelloni? „

“ Avete letto questa intervista dove il fotografo sportivo Mark Pain dichiara che per le foto con cartelloni a led sullo sfondo (sostanzialmente tutto il calcio ed una bella quantità di altri sport) non può usare la Z9 con solo otturatore elettronico perchè crea delle righe nei cartelloni?
„

“ LED displays flicker and refresh at very high speeds, which means that if they are included in a photograph, there's a good chance the LEDs will turn off and on during your exposure – even during the shortest of exposures.

If this happens, dark, perfectly horizontal 'bands' will appear in the affected area/s of the image. These bands will be more noticeable at short shutter speeds, where the very brief 'off' parts of the LED cycle make up a larger proportion of the total exposure time.

In principle, the electronic shutter of the Z9 should be no more prone to this issue than most mechanical shutters, since its rolling shutter rate is comparable. However, (like the stacked sensors in Sony's recent a9 and a1 models) it reads out groups of lines at the same time, rather than reading one after another. This means the readout proceeds as a series of steps, rather than a continuous progression. If the LED display is cycled 'off' as one of these groups is being read, a dark band will be registered across the whole group, rather than just on one or two lines (where it might be less noticeable). This creates wider and more hard-edged 'banding' than you might see with a mechanical shutter, which progresses continuously across the sensor.

Is there a fix?
Maybe. Canon's EOS R3 has a feature that attempts to measure this high-frequency flicker, then fine-tunes its shutter speed to one that will minimize the flicker effect. We've not yet tried it with an LED signage board that makes up only a small part of the image, but a similar approach is probably Nikon's best hope if it decides to address the problem. „