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What happened to ISO 50 on P30 ?

PostPosted: Thu Jan 12, 2006 11:33 pm
by Jrgen1
All productsheets states that P30 should have ISO 50. Now when I have gotten my back I find that it´s lowest ISO is 100. :?
Am I missing something ?

(ISO 800 is not important for me as a portraitphotographer. I chose this back partly because it could shoot ISO 50. If shooters want to use ISO 800, I think a DSLR is a better choice for them and that PhaseOne and others should stay away from ISO 400 and higher. It is super quality I want shooting Low ISO.)

PostPosted: Fri Jan 13, 2006 9:44 am
by Keith Carpenter

Correct - the printed P30 Spec Sheet is incorrect stating ISO 50.
The Web Site Specs states correctly:

P 30 highlights (for technical details refer to datasheet)
· Incredible 31,6 Mega pixels
· Rectangular format sensor 4:3
· Fast capture rate (45 frames / min.)
· High sensitivity (100-800 ISO)

This P30's sensor is a native ISO 100, although a more sensitive ISO 100 due to micro lens, a minimum ISO 100 nonetheless.

k c

All info stated ISO 50

PostPosted: Fri Jan 13, 2006 10:23 am
by Jrgen1
All info provided by PhaseOne stated ISO 50 until someone changed it. All PDF's i downloaded, one early this autumn and one later last year, states ISO 50...

I think it is a lame excuse that it is native ISO 100 when it has been advertised as a ISO 50 back...

PS. It still says ISO 50 on the downloadable datasheets. 8)


PostPosted: Fri Jan 13, 2006 1:57 pm
by Stephen11
I have to agree that it does state 50 on the \"P 45 datasheet - English\" downloadable right now, and on initial DC Review it states the same.

Even if this is incorrect, I would find it very misleading. Jorgen does have a valid point here...

Bearing in mind the cost of these upgrades, I have just moved from H25 to P45 and the price quoted was £3000 lower than the final upgrade cost when the P45 was ready to ship. I would not be allowed to get away with such fluctations with the facts with my clients...


PostPosted: Fri Jan 13, 2006 1:59 pm
by Stephen11
Sorry, above should say \"P30 datasheet\"

PostPosted: Mon Jan 16, 2006 6:22 pm
by Keith Carpenter
Steve VC & Jörgen Nilsson

Given the fact it is impossible to do an ISO 50 on this chip, I'll offer another lame excuse... it was a misprint in the Spec Sheet ... Human Error ... an oversight.
Therefore, if this remains a significant issue, then please pursue through your Dealer for resolve.

k c

PostPosted: Mon Jan 16, 2006 6:32 pm
by Keith Carpenter
Ah ha... I now find the PDF Spec Sheet with the incorrect information at our web site. I will notify those that can edit this document and make it accurate.
Thank You for bringing this to our attention.

k c

PostPosted: Wed Jan 25, 2006 2:15 pm
by NN8878311
Don´t want to be Mr.Annoying but it also says ISO 50 (for all models) in the manual (P-series Reference Manual) which is downloadable from and in the provided printed version that comes with the back.

I don't care about ISO50 or even saw it before i ordered my back, but thought you should know that the manual has a misprint anyway ...


PostPosted: Wed Jan 25, 2006 4:30 pm
by Jrgen1
Misprints ? Ha.

I am still very disappointed...

PostPosted: Wed Jan 25, 2006 6:15 pm
by quentin1
when you searched on internet, all the articles about the P30 will say it can shoot at ISO 50, that's a very big mistake from you.

your company should add a note or an apology on your first page.

PostPosted: Wed Jan 25, 2006 7:53 pm
by Ulf
This is a mistake made by our marketing dept, for that I do apologize.
It has been communicated out to all dealers of Phase One camera backs so the right information is communicated all potential customers.
As it has been clarified before, I will clarify it again.
P30 is using microlens technology where by sensitivity has been boosted on f-stop. This means that P30 have a native sensitivity 100 to 800 ISO while all other backs have sensitivity range between 50 and 400 ISO.

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