Luminous Landscape Forum

Equipment & Techniques => Medium Format / Film / Digital Backs – and Large Sensor Photography => Topic started by: SeanPuckett on July 13, 2007, 01:50:22 pm

Title: Call for Mamiya ZD RAW image
Post by: SeanPuckett on July 13, 2007, 01:50:22 pm
I'm contemplating the purchase of a ZD back and part of my evaluation is to look at the RAW files it produces.  Since I can't just go down to the local shop and play with one, I'd appreciate if an owner of a ZD back or ZD camera would send me a RAW file to examine.

I'm particularly interested in scenes with extreme dynamic range, for example if you are standing inside your house and expose a room (office, etc) that includes a window showing sunlit areas.  If the image has fully blown out highlights along with totally black shadows (e.g. under a desk/shelf) and has some well exposed areas in perfect focus, that would be just about perfect for my needs.  

I'm sure the camera works fine on trivial exposures; I'm much more interested how it handles boundary conditions.

If you can't host the image yourself, you could use a service like yousendit.com to send me (sean@nexi.com) a link to it.

Thank you very kindly.
Title: Call for Mamiya ZD RAW image
Post by: MichaelEzra on July 13, 2007, 01:55:30 pm
ZD camera RAW file easily handles -3 F-stops adjustment in SiklyPix 3.0
The rule with ZD is- always expose to the right and safely overexpose.
When outside light allows, and always in the studio, I overexpose ZD by at least 1.5 stops to get an extremely clean image.
Title: Call for Mamiya ZD RAW image
Post by: Frank Doorhof on July 13, 2007, 03:04:15 pm
It's indeed a camera with an incredible dynamic range.
Title: Call for Mamiya ZD RAW image
Post by: david o on July 13, 2007, 03:33:54 pm
what about long exposure?
Title: Call for Mamiya ZD RAW image
Post by: Anders_HK on July 13, 2007, 03:50:17 pm
Yousendit.com works great free for 100MB. I too much appreciate RAW sample, please email same link for download to me when/after you send/t to Sean.  My email loof_intl@hotmail.com (premium inbox).

Much kind thanks.

Regards
Anders
Title: Call for Mamiya ZD RAW image
Post by: Joe Behar on July 13, 2007, 04:17:39 pm
Quote
I'm contemplating the purchase of a ZD back and part of my evaluation is to look at the RAW files it produces.  Since I can't just go down to the local shop and play with one, I'd appreciate if an owner of a ZD back or ZD camera would send me a RAW file to examine.

I'm particularly interested in scenes with extreme dynamic range, for example if you are standing inside your house and expose a room (office, etc) that includes a window showing sunlit areas.  If the image has fully blown out highlights along with totally black shadows (e.g. under a desk/shelf) and has some well exposed areas in perfect focus, that would be just about perfect for my needs. 

I'm sure the camera works fine on trivial exposures; I'm much more interested how it handles boundary conditions.

If you can't host the image yourself, you could use a service like yousendit.com to send me (sean@nexi.com) a link to it.

Thank you very kindly.
[a href=\"index.php?act=findpost&pid=128077\"][{POST_SNAPBACK}][/a]

Sean

You most certainly can play with a ZD back...Please contact me off line and I'll be happy to set up a time when you can come down to the store and play with a ZD back to your heart's content.
Title: Call for Mamiya ZD RAW image
Post by: bcroslin on July 13, 2007, 06:45:17 pm
Has anyone actually seen a ZD back for sale in the US? Seems like we're getting close to the 60 of the 30-60 days MAC originally told people.
Title: Call for Mamiya ZD RAW image
Post by: BernardLanguillier on July 13, 2007, 11:18:12 pm
Quote
what about long exposure?
[a href=\"index.php?act=findpost&pid=128093\"][{POST_SNAPBACK}][/a]

Long exposure is a weakness of the ZD.

With the older firmware, I used to avoid going over 10 sec at ISO 100 or 20 sec at ISO 50.

I was told that the new firwmware slightly improves on this, but have not had the chance to test yet since my camera only came back from service yesterday.

Regards,
Bernard
Title: Call for Mamiya ZD RAW image
Post by: d-max on July 15, 2007, 08:33:13 pm
Quote
Long exposure is a weakness of the ZD.

With the older firmware, I used to avoid going over 10 sec at ISO 100 or 20 sec at ISO 50.

I was told that the new firwmware slightly improves on this, but have not had the chance to test yet since my camera only came back from service yesterday.

Regards,
Bernard
[a href=\"index.php?act=findpost&pid=128168\"][{POST_SNAPBACK}][/a]


Hi Bernard

I am very interested in the firmware upgrade and its improvements on the camera especially with long exposure. Please inform of the improvements with the upgrade and is it worth while.

Thanks, Joel
Title: Call for Mamiya ZD RAW image
Post by: espressogeek on July 15, 2007, 09:15:41 pm
Quote
Hi Bernard

I am very interested in the firmware upgrade and its improvements on the camera especially with long exposure. Please inform of the improvements with the upgrade and is it worth while.

Thanks, Joel
[a href=\"index.php?act=findpost&pid=128349\"][{POST_SNAPBACK}][/a]

What was wrong with long exposure before the upgrade?
Title: Call for Mamiya ZD RAW image
Post by: MichaelEzra on July 15, 2007, 09:25:04 pm
Bernard,

what is the ZD's  firmware version after the update?

Thanks,

Michael

Quote
Long exposure is a weakness of the ZD.

With the older firmware, I used to avoid going over 10 sec at ISO 100 or 20 sec at ISO 50.

I was told that the new firwmware slightly improves on this, but have not had the chance to test yet since my camera only came back from service yesterday.

Regards,
Bernard
[a href=\"index.php?act=findpost&pid=128168\"][{POST_SNAPBACK}][/a]
Title: Call for Mamiya ZD RAW image
Post by: david o on August 01, 2007, 05:55:18 pm
Bernard,
some update?