M10-R Dust Detection feature working?

[pedaes]

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On 6/26/2022 at 3:02 PM, Olivier76 said:

So indeed the M10R really need a specific white/surface for that dust detection to work

I know from experience with a M10 the camera has to be absolutely still. I usually hold it firmly on a mule post and snap the wall of the stairwell. I guess the higher mp of the -R may mean it is even more sensitive to movement - which will produce a fail. FWIW.

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[Alberti]

On 6/1/2021 at 8:56 PM, Stef63 said:

The fact that with a 180 mm it shows dozen of spots and with a 75 mm only one makes it indeed rather ineffective.

The manual does not specify a 180mm lens, nor a 135mm lens. Not even 75mm. Do not stretch the obvious or common sense:

The manual does say F16 or F22. It does not say the obvious: because a wide lens is best in getting a very sharp image = shadow behind a dust poarticle on the sensor; that such a lens should be used. I use a light grey table top of Mepal, and a 35 or 50 mm angle lens. No problems Very accurate.

Of course every lens shows a difference. The OP probably is very well aware of that. 🤧

 

 

 

[Patrick1955]

Finally came back to this topic - and while previously always got the "image inhomogeneous" message on my M10-R however I tried, I revisited taking the advice above to use a minimum of 75mm (in my case a CV 75mm f2.5 Color Heliar) aimed at a blank word document from 1 to 2 inches away from iMac screen with brightness up to the max.  I now have a totally repeatable dust detection capability in my M10-R (well, 5 successes in a row isn't bad).  Thank you for all who contributed to solving this annoyance for me.

[Patrick1955]

1 hour ago, Patrick1955 said:

Finally came back to this topic - and while previously always got the "image inhomogeneous" message on my M10-R however I tried, I revisited taking the advice above to use a minimum of 75mm (in my case a CV 75mm f2.5 Color Heliar) aimed at a blank word document from 1 to 2 inches away from iMac screen with brightness up to the max.  I now have a totally repeatable dust detection capability in my M10-R (well, 5 successes in a row isn't bad).  Thank you for all who contributed to solving this annoyance for me.

Must add, at ISO 100 and at 1/4sec exposure stopped down at infinity.   

Edited November 17, 2022 by Patrick1955

[otto.f]

A bit off topic, but owning my M10-R for 18 months now, I never detected any dust in practical picture making and thus never felt the urge to use the dust detection thus far. That is a world of difference with the M9 at that time.

[Chimichurri]

2 hours ago, otto.f said:

A bit off topic, but owning my M10-R for 18 months now, I never detected any dust in practical picture making and thus never felt the urge to use the dust detection thus far. That is a world of difference with the M9 at that time.

My 10R. In 1 year I had to swipe it once. I think if I really check there are a couple of specs on the right, but not visible in every day use. 

you can use a whole pack of sensor swipes trying to make it 100% perfect. It’ll drive you mad. 

I bought this and it’s amazing. You can see everything. I use the APS-C swipes and it lets me be precise and swipe where the dust is. 

That small magnifier at the bottom let’s you see everything on the sensor  

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[charlesphoto99]

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9 hours ago, otto.f said:

A bit off topic, but owning my M10-R for 18 months now, I never detected any dust in practical picture making and thus never felt the urge to use the dust detection thus far. That is a world of difference with the M9 at that time.

Try shooting with longer lenses a bit stopped down. You'd be surprised how much gunk there are on these sensors. I've cleaned my M10-R pretty often as I've been working with a 135mm APO for a project these last couple of years. 

[Shergar]

Meter off a dark area and then recompose.

I was struggling with this feature for some time but it then became clear to me that when Dust Detection is enabled the camera auto meters and this can still result in too dark of an image even in bright light. If I meter (half press shutter) off a dark area and then recompose on say a blank white ceiling beside a window in bright light it works consistently so far. hat when Dust Detection is enabled the camera auto meters and this can still result in too dark of an image even in bright light. If I meter (half press shutter) off a dark area and then recompose on say a blank white ceiling beside a window in bright light it works consistently so far.

[Patrick1955]

On 7/14/2025 at 3:47 AM, Shergar said:

Meter off a dark area and then recompose.

I was struggling with this feature for some time but it then became clear to me that when Dust Detection is enabled the camera auto meters and this can still result in too dark of an image even in bright light. If I meter (half press shutter) off a dark area and then recompose on say a blank white ceiling beside a window in bright light it works consistently so far. hat when Dust Detection is enabled the camera auto meters and this can still result in too dark of an image even in bright light. If I meter (half press shutter) off a dark area and then recompose on say a blank white ceiling beside a window in bright light it works consistently so far.

Thanks for the suggestion - didn't work for my 10-R - so maybe there is some variability between cameras.  My use of 75mm, stopped down at infinity and at ¼ sec exposure (AutoISO) on a blank Notes / Wordperfect page still works for me. 

[jaapv]

The accepted method of detecting dust is setting the camera to the smallest aperture,  defocus and overexpose an even  surface. The camera feature appears rather superfluous to me, especially if it spawns a thread with difficulties. 

[pgh]

Never had much issue with it on my original m10, and find it useful in diagnosing how effective my cleanings are. I just point it at a white wall stopped down, defocussed w plenty of exposure, sort of intuitive to get contrast w the dust spots. 

Edited July 15 by pgh