The Pentax Q has a tiny, 1/2.3" (6.17 x 4.55 mm) sensor. Even with 12MP, it features about 650 pixels per mm. That's a really high pixel density. If an FF sensor had the same density, it would be about 365MP.
But what about lens resolution power? Would an FF lens be able to "resolve" that many megapixels?
To find out, I did some testing with the Pentax Q (as a 365MP FF emulation) and the Pentax K-m (as a 24MP FF emulation). I took pictures with both cameras using the same Pentax K 28/3.5 lens (introduced in 1976) at f/5.6.
Then, I upscaled (with Lanczos) an image from the K-m by a factor of 3.9 (sqrt(365/24)) and compared crops from the two images: one from the Pentax Q (on the left) and upscaled one from the Pentax K-m (on the right).
Clearly, the Pentax Q (with its "365MP FF") provides much more detail than the Pentax K-m (with its "24MP FF"), even when using an old film-era lens.
See also related notes:
- Pentax Q: Useless mirrorless camera (2025-02-14)
- Pentax K-m: 10MP CCD DSLR (2023-12-23)
- Pentax K 28/3.5, K 30/2.8, K 35/3.5: опять к старой теме (2022-05-22)
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