Using P25 with iBook G4 on Firewire

Questions, comments and suggestions regarding Phase One P+ series and P series digital camera backs.

Using P25 with iBook G4 on Firewire

Postby Stefan1 » Wed Nov 30, 2005 3:00 pm

Hello,

I owned a H20, updated to H25 and now to P25.
I was very satisfied with H20 and H25 but I am not with P25.

I often shoot directly tethered into my iBook to control focus whenever
possible. But this does ot work with P25. It freezes even when the iBook
is connected to AC. It seems that I have to use a battery and a 4 to 6 pin
FireWire adaptor when shooting tethered in studio.
This is more than intricate. Sorry PhaseOne I am really disappointed.
Stefan1
 
Posts: 18
Joined: Wed Nov 30, 2005 2:35 pm
Location: Germany.

Postby Ulf » Wed Nov 30, 2005 3:57 pm

The workarounds you are mentioning is due to that your iBook does not produce enough power according to the firewire (IEEE1394) standard.
This issue we have seen on iBooks, 1st gen iMac and then newest generation iMac (built in iSight) and some PowerBooks.
My argument can easely be proved by pluging in your P25 in a desktop and you will see that it works perfect.
Yes it is disapointing that Apple does not meet the standard that they was a part of founding. :?
(No pun intended) but you will for sure be better of with a PowerBook which is a laptop made for working with larger files where the iBook was made for college students writing essays and surfing internet.
Ulf
Crew
Crew
 
Posts: 3444
Joined: Wed Oct 06, 2004 1:52 pm
Location: Copenhagen Denmark

Postby Stefan1 » Wed Nov 30, 2005 4:29 pm

Do you try to be humorous ?
Sorry but I cant laugh about your jokes.
\"iBook is for college students\" Superb !
It just take it as capture computer and storage harddrive and
therefore it's absolutely okay. Sorry it was okay.
Unfortunately I just sold my G4 Dual 2 weeks before

In the meanwhile I Know another photographer who has
the same problem with a powerbook.

It worked fine with the H25 before and there is no description
at the datasheet of the P25 that I need Powerbook or desktop.
Computer Requirements: G4, 500 MB RAM, firewire.

I am disappointed of my 22,900 Euro digital back. Not of my iBook or apple.

regards
stefan
Stefan1
 
Posts: 18
Joined: Wed Nov 30, 2005 2:35 pm
Location: Germany.

Postby Ulf » Wed Nov 30, 2005 6:54 pm

Sir, as I said, no pun was intended.
I am only stating fact around firewire and the power they provide which is the issue.
Is the problem that you can not shoot at all then I am affraid that the only solutions are the one you have been provided and a PowerBokk would solve it.

If what you see is a form of wide vertical black and pink stripes (which in some cases can occure with Powerbook as well) then I might have a different solution for you.
Please inform.
Ulf
Crew
Crew
 
Posts: 3444
Joined: Wed Oct 06, 2004 1:52 pm
Location: Copenhagen Denmark

Postby damienlovegrove » Wed Nov 30, 2005 8:14 pm

P25 Works fine with my Powerbook even using a 10m cable. It might be worth using an external powered firewire hard drive with a spare firewire port as the firewire port may well be powered to the full spec and you can then plug the P25 into the spare port. The external hard drive at 7200 and up to 10x the capacity of the ibook hard drive is a worthwhile upgrade anyway.

I'm an Apple fan too but I agree the ibook firewire power is a problem that Apple should have addressed along with the poor video card performance.
User avatar
damienlovegrove
DB Owner
 
Posts: 215
Joined: Tue Nov 02, 2004 7:58 pm
Location: Bristol UK

thanks for the tipp

Postby Stefan1 » Wed Nov 30, 2005 9:25 pm

I can shoot one or two times than the back freezes completely.
I can can switch off and on again.

I will try it immediately the external FW HD tomrorrow morning
and post the result. Thanks for the tip.
As I wrote I just replaced a G4 Dual by a new G5. I would have
kept it if I had known about the problems.
I know that the iBook is no professional tool for digital imaging
but that's not what I'm doing with it. You may understand that
I was very disappointed when I was confrontated with this
inconvenience.

thanks & best regards
Stefan

(Great wedding pictures. Respect!)
Stefan1
 
Posts: 18
Joined: Wed Nov 30, 2005 2:35 pm
Location: Germany.

Postby damienlovegrove » Wed Nov 30, 2005 11:06 pm

Hi Stefan,

I keep my fingers crosssed for the external hard disk solution.

Damien.
User avatar
damienlovegrove
DB Owner
 
Posts: 215
Joined: Tue Nov 02, 2004 7:58 pm
Location: Bristol UK

Postby Stefan1 » Thu Dec 01, 2005 9:18 am

Hi Damien,

great idea but it did not work.
I had the iBook connected to the AC and used my
FW harddrive also connected to AC. The result is
unfortunately the same. The back freezes after a few
minutes.

I wanted to wait buying a new powerbook until
the revision B of intel books are out. What a bummer!

What I am still worried about is that there is no
difference using battery or AC. If I buy a powerbook
will this be better ? I know another photographer who
can use his P25 only connected to AC when he shoots
tethered.

Is there a difference in between 12 / 15 / 17 powerbook ?
I prefer to keep it light and small to stay mobile. (That's why
I had the iBook. )

Best regards
stefan
Stefan1
 
Posts: 18
Joined: Wed Nov 30, 2005 2:35 pm
Location: Germany.

Postby a_dan » Thu Dec 01, 2005 9:57 am

hello! i have ibook 500 MHz G3 12' with 640 MB SDRAM. i used it tethered connected to AC with P-25. it works, but slow. so maybe problem not only with battery, but with memory
good luck
a_dan
 
Posts: 13
Joined: Sat Nov 13, 2004 9:09 am

Postby Stefan1 » Thu Dec 01, 2005 10:07 am

Hi

worth a try also. I will remove the 1 GB and
replace it by the original 512 MB.
thanks for the tip.

best regards
stefan
Stefan1
 
Posts: 18
Joined: Wed Nov 30, 2005 2:35 pm
Location: Germany.

Postby Stefan1 » Thu Dec 01, 2005 3:03 pm

unbelievable..

I changed the RAM and now it works.
Is it possible that 1,25 GB RAM needs so much
more power than 768 MB ore is it just at a critical border ?
It works without the battery of the back, even when iBook is
not connected wit AC. Strange....

Every other application included H25 worked fine with 1,25 GB RAM.
I had no trouble with the book or with this RAM before.
Is ist possible that more RAM needs more power and leaves
less for FW port ?

best regards and thanks for help
Stefan
Stefan1
 
Posts: 18
Joined: Wed Nov 30, 2005 2:35 pm
Location: Germany.

Postby Ulf » Thu Dec 01, 2005 4:58 pm

Yes this is quite possible.
From experiance I can say that AC or not does not seem to make that much of a difference. We had on Titanium (black keyboard) which rebooted due to lack of power upon shooting .
Ulf
Crew
Crew
 
Posts: 3444
Joined: Wed Oct 06, 2004 1:52 pm
Location: Copenhagen Denmark


Return to Phase One P+ and P series camera backs



Who is online

Users browsing this forum: No registered users and 1 guest