[Elphel-support] Elphel 353 - Question about Focus

[Oleg]

Hi,

*Lens:* E3Z4518CS-MPIR
>
We haven't been able to get the focus to show the cards as sharp that with
> the Sanyo cameras.
>
The cards are a 124cm from the camera, and with the Sanyo ones we are using
> a Pentax 5-50mm lens.
> Any advice or recommendation you may have to help us out with this project
> will be really appreciated.
>

When the focus is "the best" - is the focusing ring at its extreme position?
If yes:
a. ideally you need to increase the sensor's distance from the lens by
adjusting the sensor's plate position (1-2 mm probably) in the front end.
or
b. decrease the working focal length (wider field of view) - rotate the
ring towards W until you get the best focus.
c. you can also try closing the iris a little to increase the depth of
field.

If no, then a better lens should be tried probably.

What's the image quality? frame dimensions?

Best regards,
Oleg Dzhimiev
Electronics Engineer
phone: +1 801 783 5555 x124
Elphel, Inc.
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