How can I calculate the resolving power of my mobile phone camera?

[jsmoove]

Honestly im not sure how to go about it, does it have to do with lpmm?

 

[jsmoove]

I see: https://photo.stackexchange.com/a/80093
But im not sure how to use this info, obviously in each mobile phone camera, the lens and sensor is different....but how can I start with my own phone to begin with?

 

[ced]

Try to download the free university reproduced chart and print your own.
https://www.graphics.cornell.edu/~westin/misc/res-chart.html

 

[Eric Rose]

Go to DXO

 

[jsmoove]

Ah I see, so lpmm is what we used in the past, MTF is what we use now.
Are there any free available programs that are recommended to calculate MTF of a smartphone?

 

[jsmoove]

Can you calculate the MTF from a digital image taken by a camera?

 

[Billy Axeman]

Can you calculate the MTF from a digital image taken by a camera?

Optical resolution
https://en.wikipedia.org/wiki/Optical_resolution

 

[MattKing]

I'm not sure how easy it would be to separate the optical performance of a smart phone from the influence of the digital processing built into that smart phone.
What might appear to be evidence of resolution may simply be results of the sharpening algorithms - or maybe not. I don't think you can decouple the optics from the processing.

 

[nmp]

Not sure what you are trying to do. These types of measurements require precise scientific instrumentation - not something you can rig up in a diy project. MTF is not one number, it is in form of a chart that takes many measurements along the diameter of the lens.

https://www.nikonusa.com/en/learn-a...is-a-lens-mtf-chart-how-do-i-read-it.htmltion

If you want to do bare bones "resolution" measurement in the form of lpmm (lines per mm) or lpi (lines per inch,) you can print out the test pattern from the link provided earlier, shoot it and then analyze in Photoshop to see where the the parallel lines stop being distinct and start merging with each other. That would be your minimum resolution.

:Niranjan.

 

[Billy Axeman]

.... If you want to do bare bones "resolution" measurement in the form of lpmm (lines per mm) or lpi (lines per inch,) you can print out the test pattern from the link provided earlier, shoot it and then analyze in Photoshop to see where the the parallel lines stop being distinct and start merging with each other. That would be your minimum resolution. :Niranjan.

That was my first thought too. I don't know what OP wants to achieve by attempting such a complicated calculation.

 

[alentine]

As nmp said above, plus to unify your methods and print same size from each mobile camera, then measure LPPmm under 10X loupe.