Back focus with the 20X IS HD lens ? at DVinfo.net

Ronan Fournier · April 25th, 2006, 11:00 AM

I'm a happy new user of the Canon XL-H1! But the notion of back focus is new for me (I've got a GL1 and a FX1 before).

So, is it necessary to adjust the back focus with the lens delivered with the camcorder, or is it only for the other lenses or the EF adapter ?
You may say that I've got to try, in order to see if I obtain a better sharpness, but I don't want to take the risk to put it out...

Thank you!

Steve Rosen · April 25th, 2006, 11:43 AM

Yeah, you need to set it - in fact, every time you remove it you need to do it again - but once you have that lens' setting in memory, the camera will do it automatically... it's easy to set up in about a minute, just follow the instructions..

Ronan Fournier · April 26th, 2006, 01:41 AM

All right, Thank you Steve!

Johan Forssblad · May 6th, 2006, 08:31 AM

When activating the back focus setting my wievfinder went very dark (I was indoors). Don't know why. Had to increase the light a bit to be able to see anything except darkness. (Shutter and aperture controls had no effect.)

Use both PEAKING and MAGNIFYING button ON to be able to set the best possible sharpness, especially at wide.

Otherwise it was easy. I couldn't see it changed the factory setting of my combination anyway but better to be on the safe side.

Ian Thomas · December 18th, 2006, 04:05 PM

Sorry for sounding thick but where's the info for the back focus setting
Thanks

Mick Jenner · December 18th, 2006, 04:25 PM

Hi Ian,

Its quite easy to find it in the manual. If I remember right page 24.

Regards

Mick

Ian Thomas · December 19th, 2006, 06:29 AM

thanks Mike

Iam still a bit unsure, i will give you a call

Thanks

Chris Hurd · December 19th, 2006, 07:31 AM

Flange back adjustment needs to be done only one time per lens.

See these previous discussion threads for more information about this topic:

http://www.dvinfo.net/conf/showthread.php?t=66900

and

http://www.dvinfo.net/conf/showthread.php?t=79328

Hope this helps,

Mick Jenner · December 19th, 2006, 10:52 AM

Quote:

Originally Posted by Ian Thomas

thanks Mike

Iam still a bit unsure, i will give you a call

Thanks

I'll expect the call. I only know what I read in the manual and on the forum and then followed the instructions.

regards

Mick

April 25th, 2006, 11:00 AM	#1
Ronan Fournier Major Player Join Date: Jun 2005 Location: Paris, France Posts: 201	Back focus with the 20X IS HD lens ? I'm a happy new user of the Canon XL-H1! But the notion of back focus is new for me (I've got a GL1 and a FX1 before). So, is it necessary to adjust the back focus with the lens delivered with the camcorder, or is it only for the other lenses or the EF adapter ? You may say that I've got to try, in order to see if I obtain a better sharpness, but I don't want to take the risk to put it out... Thank you! __________________ http://www.songesdemoai.com/

April 26th, 2006, 01:41 AM	#3
Ronan Fournier Major Player Join Date: Jun 2005 Location: Paris, France Posts: 201	All right, Thank you Steve! __________________ http://www.songesdemoai.com/

December 18th, 2006, 04:05 PM	#5
Ian Thomas Major Player Join Date: Sep 2004 Location: York, North Yorkshire, England. Posts: 472	Sorry for sounding thick but where's the info for the back focus setting Thanks __________________ Ian Thomas. Thomas Video Productions

December 19th, 2006, 06:29 AM	#7
Ian Thomas Major Player Join Date: Sep 2004 Location: York, North Yorkshire, England. Posts: 472	thanks Mike Iam still a bit unsure, i will give you a call Thanks __________________ Ian Thomas. Thomas Video Productions

December 19th, 2006, 07:31 AM	#8
Chris Hurd Obstreperous Rex Join Date: Jan 2001 Location: San Marcos, TX Posts: 27,366 Images: 513	Flange back adjustment needs to be done only one time per lens. See these previous discussion threads for more information about this topic: http://www.dvinfo.net/conf/showthread.php?t=66900 and http://www.dvinfo.net/conf/showthread.php?t=79328 Hope this helps, __________________ CH Search DV Info Net \| 20 years of DVi \| ...Tuesday is Soylent Green Day!

April 25th, 2006, 11:43 AM	#2
Steve Rosen Major Player Join Date: Dec 2005 Location: Monterey, California Posts: 895	Yeah, you need to set it - in fact, every time you remove it you need to do it again - but once you have that lens' setting in memory, the camera will do it automatically... it's easy to set up in about a minute, just follow the instructions..

May 6th, 2006, 08:31 AM	#4
Johan Forssblad Major Player Join Date: Nov 2005 Location: Vittsjö, SKÅNE, SWEDEN Posts: 266	When activating the back focus setting my wievfinder went very dark (I was indoors). Don't know why. Had to increase the light a bit to be able to see anything except darkness. (Shutter and aperture controls had no effect.) Use both PEAKING and MAGNIFYING button ON to be able to set the best possible sharpness, especially at wide. Otherwise it was easy. I couldn't see it changed the factory setting of my combination anyway but better to be on the safe side.

December 18th, 2006, 04:25 PM	#6
Mick Jenner Major Player Join Date: Mar 2003 Location: West Sussex England Posts: 843	Hi Ian, Its quite easy to find it in the manual. If I remember right page 24. Regards Mick