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-   -   Backfocus and 16x manual (https://www.dvinfo.net/forum/canon-xl-gl-series-dv-camcorders/135051-backfocus-16x-manual.html)

David Odell October 1st, 2008 12:32 PM

Backfocus and 16x manual

I have been using the 16x manual since a half a year back. Well I always thought that the focus was spot on, since I made it through a
resolution chart over and over again on a production monitor. But after the last adjustment, things haven't really looked that sharp,
and the dof (that blurry out of focus) have been looking rather bad.

So I readjusted it again today with huge success. I used a description and a Siemens Star from: Ron Dexter site.
It's amazing how much focus adjustment I didn't see on my other resshart. So my only advice to rookies like me is to use a Siemens Star.

It's really intresting how much this back focus can have influence on, the overal picture is clearer, the dof is nicer.

Take care

Cole McDonald October 1st, 2008 01:40 PM

I still want to figure out how to backfocus my auto lens on my XL1s... I don't want to have to send it in everytime I need it done :( I'm worried about when support is EOL'd.

The techs at canon can do it which means technically we should be able to do so also.

Jarrod Whaley October 1st, 2008 02:43 PM

A Siemens star is most assuredly the way to go. I've even used a PDF of a Siemens displayed on my monitor--not ideal, but it works quite well in a pinch.

Cole: There's definitely no way for a "layman" to adjust the flange back on any of Canon's XL autofocus lenses. Since the ability to do so is not made explicitly available to us, I wouldn't risk giving it a try even if I knew how the Canon techs do it. If nothing else, it would void your warranty.

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