The 1020 has a built in 4.1mm f/2.2 fixed aperture and fixed focal length lens, so to get a meaningful similar comparison I shot the phone images in 4:3 ratio and used the 12-32mm zoom at 13mm on the GM1 at f/4. I shot at ISO 200 and ISO 1600.
Here is a diagram of the Nokia multi-format sensor from that article.
Below is how the the two sensor sizes compare to each other. As you can see the differences in sensor size, pixel count and therefore pixel size are quite dramatic.
Now it would have been a major surprise if the Nokia has managed to equal the GM1. The GM1's pixel size is several times bigger than the 1020. Plus the lens on the Nokia is a much smaller, less sophisticated optic than the Panasonic zoom. However, taking that into consideration, the Nokia does a decent job. Surprisingly, the ISO 1600 results are reasonable. However it's difficult to know how much in camera noise reduction is going on with the Nokia.
The Nokia also produces a 5MP versions of each images.
This is the ISO 200 version.
And the fact is that these files CAN be reproduced in print at very large sizes and for purposes that require high quality. Because I chose to compare the 1020 files with a m4/3 camera, which has a sharper 'out of the box' rendition than many other cameras. If I had compared the Nokia files with a Nikon D3200 and some of the Canon ***D series cameras for example, then the sharpness / detail difference would have been much less apparent. Some have written that no camera phone could possibly compete with a DSLR or Mirrorless / CSC camera, but they have obviously never experienced the aforementioned D3200's output, which still holds the dubious distinction of producing the softest files I've ever seen.
So, I'm not going to pretend that the Nokia 1020 produces image quality that it doesn't. There is still an advantage for a larger sensor and interchangeable lenses in terms of image quality. Because I used a zoom on the GM1 that is far from the best lens I could have attached from the camera. But then I'm not using the Nokia to produce the highest resolution, highest quality files I can. I'm using it for lots of other reasons that I have been outlining in my previous posts about the camera. However, though I am compromising on the image quality and I can get better with my other cameras, it's a compromise that I'm willing to make because of those other considerations.
And those compromises are not enough to affect the way I make a living. If they were I simply wouldn't have bothered to buy the Nokia. It's clear to me that even with it's image quality deficiencies compared to my other cameras, it produces images that are satisfactory for what I want and need. That then allows me to use it for all the reasons I bought it. Simplicity, ease of use, anonymity, cost, time saving etc. I never thought I'd be using a smartphone for my work anyway, so the fact that it produces decent images is a bonus for me. It does in fact produce quality that is better than I imagined and I was sure I would have to downsize the images significantly to get them accepted by picture libraries. The fact that I'm not having to do that shows just how good the results are. Picture libraries are not in the business of accepting image files to sell to customers that they think will give cause for complaint, so that is a further indication that the Nokia 1020 produces good images.
*Finally, I would point that that there is an update that allows the shooting of raw .dng files on the 1020. However, since the endless processing of raw files is something that I'm trying to avoid I'm not that inclined to use it, though I may (or may not) try it in the future. I have had a look at some samples and there is an improvement in dynamic range but I couldn't see any sharpness or detail resolution boosts. Plus since the camera is very power hungry and the file saving is quite slow, creating and saving raw files is going to do nothing to help that. Plus I have all sorts of ways to sort out any dynamic range issues in Photoshop and have some simple quick ways of restoring blown highlights which is the main problem. And as I've indicated most of the point of me using a smartphone to take pictures is to get away from endless 'fiddling' and editing.
UPDATE - I have now updated my 1020 and it shoots RAW 38MP DNG files. For my first impressions see new post HERE.
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