Re: [PATCH 4.19.y-cip 12/40] media: dt-bindings: media: i2c: Add IMX219 CMOS sensor binding


Lad Prabhakar
 

Hi Pavel,

-----Original Message-----
From: Pavel Machek <pavel@denx.de>
Sent: 10 March 2021 09:39
To: Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@bp.renesas.com>
Cc: Pavel Machek <pavel@denx.de>; cip-dev@lists.cip-project.org; Nobuhiro Iwamatsu
<nobuhiro1.iwamatsu@toshiba.co.jp>; Biju Das <biju.das.jz@bp.renesas.com>
Subject: Re: [PATCH 4.19.y-cip 12/40] media: dt-bindings: media: i2c: Add IMX219 CMOS sensor binding

Hi!

+description: |-
+ The Sony imx219 is a 1/4.0-inch CMOS active pixel digital image sensor
I assume it is 0.25 inch sensor? 1/4 inch or 0.25 inch would be
understandable, but 1/4.0 is kind of strange.
Agree with you here, but looking at the document [1] its referred the same way "1/4.0".

[1] http://www.opensourceinstruments.com/Electronics/Data/IMX219PQ.pdf
It is refered as "Type 1/4.0" and I'm not really sure what it means.

1/4 inch is 6.35mm, but document states it is 4.6mm.

https://www.photoreview.com.au/tips/buying/unravelling-sensor-sizes/
Thanks for the pointer.

explains this system, but they use 1/4", not 1/4.0, and it translates
that to 4.5mm.

I guess easiest way is to say it is "4.8mm CMOS active pixel digital
image sensor" and forget about confusing inch values.
Totally agree with you (^^4.5mm).

Cheers,
Prabhakar

Best regards,
Pavel
--
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany

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