Q2M vs Q3M …

[LocalHero1953]

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9 minutes ago, Derbyshire Man said:

My dad was a TV news cameraman for a national broadcaster. Many of the professional cameras had monochrome only EVF as the lack of RGB increased resolution to allow critical focusing. It has always struck me that on the QM series the same trick as applied to the sensor should be applied to the EVF (luminance only) with potential for a visoflex 2M in addition.

I've never had a monochrom, but the QM EVF must be in mono anyway (there is no colour info to feed to the EVF). It's an option on any Q by selecting B&W for the JPG Film Style (even if you are set to DNG only). It also works for SL and perhaps also for M-EV1/Visoflex.

Edited Monday at 08:07 AM by LocalHero1953

[viramati]

21 minutes ago, LocalHero1953 said:

I've never had a monochrom, but the QM EVF must be in mono anyway (there is no colour info to feed to the EVF). It's an option on any Q by selecting B&W for the JPG Film Style (even if you are set to DNG only). It also works for SL and perhaps also for M-EV1/Visoflex.

Neither the EVF or LCD on the Q2M are mono displays as they both have colour adjustment settings in the menus and they also need to be colour show the sepia and other effects when using jpeg's

[LocalHero1953]

2 minutes ago, viramati said:

Neither the EVF or LCD on the Q2M are mono displays as they both have colour adjustment settings in the menus and they also need to be colour show the sepia and other effects when using jpeg's

But the displays must be monochrome (i.e. single colour), even if not strictly black and white.

[viramati]

30 minutes ago, LocalHero1953 said:

But the displays must be monochrome (i.e. single colour), even if not strictly black and white.

the displays are not monochrome as they show the sepia, blue and selenium tones when you add them to the jpegs settings. As you can see from the colour adjustments the screens  are in fact colour even though the data from the sensor is only in B&W

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Edited Monday at 09:04 AM by viramati

[LocalHero1953]

That's not the issue that led to this point: that manual focusing in monochrome is easier; Derbyshire Man suggested turning the Q3M/Q2M EVF to monochrome for this purpose. My post was that it already is, because that is the data from the sensor. Yes, the EVF is capable of colour, but for the purposes of manual focusing, you would still be doing it in monochrome. 

NB Monochrome, literally, means a single colour - not necessarily black & white. You can have sepia or selenium monochrome.

[SrMi]

I believe the EVF/LCD in monochromes is a color EVF, i.e., each pixel consists of three dots (red, green and blue). 

[jaapv]

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1 hour ago, SrMi said:

I believe the EVF/LCD in monochromes is a color EVF, i.e., each pixel consists of three dots (red, green and blue). 

That is correct - mine in the M9M died and created blue parts. It is identical to the M9 colour EVF.

[Derbyshire Man]

9 hours ago, SrMi said:

I believe the EVF/LCD in monochromes is a color EVF, i.e., each pixel consists of three dots (red, green and blue). 

Yes, this is my point, if the EVF were truly mono where each pixel showed only luminance rather than red, green or blue then the effective resolution would be higher, just like the sensor itself, thus potentially delivering the ability to discern critical focus without punch in (and probably focus peaking). Supposition though!

[SrMi]

Another difference is in the shutter speed range:

Q2M: 60 sec to 1/40000 sec

Q3M: 60 min to 1/16000 sec

[LocalHero1953]

18 hours ago, SrMi said:

I believe the EVF/LCD in monochromes is a color EVF, i.e., each pixel consists of three dots (red, green and blue). 

Is that 5.76m 'dots' in the Q3 EVF or 3x5.76m? And I'm curious: how does an EVF respond to the monochrome signal from the sensor. Does each of these three 'dots' show the same brightness? 

Edited yesterday at 08:52 AM by LocalHero1953

[SrMi]

4 hours ago, LocalHero1953 said:

Is that 5.76m 'dots' in the Q3 EVF or 3x5.76m? And I'm curious: how does an EVF respond to the monochrome signal from the sensor. Does each of these three 'dots' show the same brightness? 

AFAIK, the EVF resolution is always given in dots not pixels. The EVF in Monochroms shows image in color, similar to the way that the computer displays show the output of Monochroms.

[FlashGordonPhotography]

5.76M is the total number of pixels. dot=pixel. Often EVF’s are also described in MP.

Gordon

[SrMi]

33 minutes ago, FlashGordonPhotography said:

5.76M is the total number of pixels. dot=pixel. Often EVF’s are also described in MP.

Gordon

The EVF's resolution is always specified in dots, red, green and blue dots counting separately. The resolution is not given in pixels.

The same goes for sensor resolution.

[FlashGordonPhotography]

13 minutes ago, SrMi said:

The EVF's resolution is always specified in dots, red, green and blue dots counting separately. The resolution is not given in pixels.

The same goes for sensor resolution.

Sorry but no. Many press releases have given a EVF resolution in MP (mega pixels). It’s commonly used. No it’s not technically the correct term. That doesn’t stop some manufacturers from using it.

Gordon

[SrMi]

53 minutes ago, FlashGordonPhotography said:

Sorry but no. Many press releases have given a EVF resolution in MP (mega pixels). It’s commonly used. No it’s not technically the correct term. That doesn’t stop some manufacturers from using it.

Gordon

Leica's technical specs list for SL3 5.76M in dots, or exactly:

Resolution: 5,760,000 pixels (dots)

Edit: DPR lists in its reviews all EVF resolutions in M dots.

Edited 23 hours ago by SrMi