M10 Image review question

[ChicagoMatthew]

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When you’re reviewing images on the m10, and you zoom in, how far in does it zoom? It seems awful zoomed in to be 100%. Seems more like 200% or more. 

[farnz]

You need to remember that you're zooming into a jpeg thumbnail that's purposely created in-camera for displaying on the LCD screen so it's quality is quite modest before you zoom in at all.  The jpeg that you download from the camera isn't (can't be?) viewed on the LCD.

Pete.

[ChicagoMatthew]

52 minutes ago, farnz said:

You need to remember that you're zooming into a jpeg thumbnail that's purposely created in-camera for displaying on the LCD screen so it's quality is quite modest before you zoom in at all.  The jpeg that you download from the camera isn't (can't be?) viewed on the LCD.

Pete.

Thanks Pete. I am aware it’s a jpeg, the histogram is even based on the jpeg, which is kinda dumb to me. 

Do you know how far it zooms in or no? 

[david strachan]

Hello Mathew

You might like to compare zoom ratio of downloaded image, say in Lightroom...compared to same image zoomed in-camera. Let us know your results.

It was generally considered best view on M8 and M9 was one step less than full zoom, to consider the image for sharpness...if you're bourgeois of course 😃.

 

I'd be interested to know, notwithstanding Pete's input.

 

...

 

 

[farnz]

8 hours ago, ChicagoMatthew said:

Do you know how far it zooms in or no?

Hi Matthew,

I don't know but the M10's thumbwheel allows four 'zoom' clicks of the LCD picture.  It appears to me that the picture area is roughly halved with the second click, which would translate to double magnification (100% zoom).  But since we're dealing with area of course it's an inverse-square law relationship and halving the area that's already halved will give 400% zoom magnification (not 200%) on the third thumbwheel click.  So my guess is: 2 clicks --> 100%, 3 clicks --> 400%, 4 clicks -->1600%?, which is why fully zoomed-in on the thumbnail jpeg causes the picture to break up.

Pete.

[phib]

In the M10 Manual it says that its 100% when zoomed in fully:

Zitat

Turn the thumbwheel 28 to the right to enlarge a central section. Enlargement is possible up to 1:1, i.e. until 1 pixel of the monitor displays 1 pixel of the picture. You can use the direction pad 29 to select any position of the section of an enlarged picture.
Page 182 in the German/Englisch pdf

Edit: thinking about it i'm not sure if 1:1 really means 100% size is shown..

Edited July 27, 2019 by phib

[david strachan]

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I have just tried a card image compared to the download in Lightroom, with my M-P typ 240.    I am on Lightroom 6.14 and assume the magnifications are the same between editions of LR.

There are 4 clicks rolling the thumbwheel to enlarge to reach maximum enlargement of the image in-camera.

In Camera...at two click rolls, this equals nearly 1:1 in Lightroom.  Note the Lightroom image is a little more enlarged compared to the in-camera enlargement.(Perhaps 1.3:1 in Lightroom.)

In Camera at four click rolls, this equals more than 2:1 and less than 3:1 in Lightroom.  Perhaps approximates to 2.5:1 in Lightroom (?).

 

In summary, two "enlargements" in-camera approximates to 100%, or 1:1 ratio of the image.

 

...

 

Edited July 28, 2019 by david strachan

[adan]

David - you can't just hold the camera up next to your computer screen and make a comparison, unless you are absolutely sure that your computer screen and the M10 LCD have exactly the same pixel pitch (unlikely). Can you quote the pixel-pitch of the M10 screen?

It's like measuring one item in inches and another other in cms, and claiming that since both are "9 units long", they must be the same length.

[phib]

vor 20 Minuten schrieb adan:

David - you can't just hold the camera up next to your computer screen and make a comparison, unless you are absolutely sure that your computer screen and the M10 LCD have exactly the same pixel pitch (unlikely). Can you quote the pixel-pitch of the M10 screen?

It's like measuring one item in inches and another other in cms, and claiming that since both are "9 units long", they must be the same length.

That was my thought also. Thinking about it more, i think I'm almost sure the M10 displays 100% when zoomed in fully. Then 1 pixel of the display is 1 pixel of the image (as stated in the manual), what else could that be then a 100% view? Pressing the 1:1 Button in Lightroom does exactly the same and it says 100% there

Edited July 28, 2019 by phib

[adan]

For the record (as the photo says ) here is my M10 next to my own computer. Showing the same image at "100%" in Photoshop, and at maximum zoom in the M10.

Max zoom in the M10 is obviously much less magnified than on my screen. Probably less than half the size, or 40%-pixels-view (and certainly not 200%).

My Cinema Display is set for its max rez. (2560 x 1440 pixels) and that works out to 110 ppi, and my Photoshop is also set for 110 ppi (so that if/when I set the view to display "actual print size" it shows - actual print size).

Now again, unless one is comparing screen views known to have the same pixel pitch and other settings - they like comparing "chalk and cheese." But a quicky look at my screen and the M10 screen through my Schneider Loupe shows that the pixel-elements (RGB trios) in the M10 screen are "on the close order" of half as large, or even smaller, than my computer-display pixels (probably about 240 ppi), so the M10 is more than "twice as sharp" and probably is showing pictures at just about "100%" (1 image pixel = 1 screen pixel).

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[david strachan]

I compared the total view, angle of view, across the respective screens ie the camera lcd vs the computer view in LR.

cheers...

[david strachan]

I hope that answers the query.

 

...

[ChicagoMatthew]

Thanks everyone!!

[helohe]

The M10 screen has a "resolution" of 1,036,800 dots (the M 240 had 920,000 dots). The files the M10 produces have a size of 23760384 pixels (5952 x 3992) for jpeg however the dng size is slightly larger 5976 x 3984 pixels (23808384 pixels). Not sure which one is used for display purposes. However I would guess that the image displayed at full zoom level has slightly lower resolution than the screen resolution, which is why full zoom looks blured.

[Revolver]

I regularly print M10 jpegs at 11x14 print size and they look 100% professional. Nothing else matters.