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Lower cost digital backs for 501 and 503 Hasselblad bodies

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MartinN

Well-known member
P25 and P25+ can be a bit expensive when compared to the P45+. The P45+ is somewhat of a ’masterpiece’ with unique features (long exposures) so it can have a little premium price, but not much I think.
 
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Ben730

Well-known member
GeorgeLG said:
I am seriously considering a P25 or P45 back. Some questions:

1) Can somebody school me on the shot count on these used backs? Is there a maximum I should stick too?

2) I think I understand that in order to manage the resultant Phase One RAW files I need to use Capture One, Version 12 on my Windows 10 computer with a CF card reader at a cost of $300. Is that correct?

George
Click to expand...
I have a P25+ Hasselblad V mount for sale on Ebay:

www.ebay.ch

Phase One P25+ Digital Back for Hasselblad V | eBay

Phase One P25+ Digital Back for Hasselblad V | Foto & Camcorder, Digitalkameras | eBay!
www.ebay.ch
 
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GeorgeLG

New member
After going through the fat pixel thread I am hooked. Given windows 10 I think I am looking for a P20/P21/P25/CFV 16.

George
 
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GeorgeLG

New member
What are my options for a "mask" or other way to mark the image area in the viewfinder when using the P25+ digital back? Also, are there any specific requirements or limitations for the CF cards?

Thanks,

George
 
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MartinN

Well-known member
There are printable plastic transparent sheets (for those old presentation projecting devices). Then you measure the size of the ground glass and make a square lined box, the size of the ground glass, using a drawing program, that is true size to your sheet, on a new designed sheet. Maybe the free program Gimp or Inkscape. You can print your lined box on a normal sheet of paper to check that your box is really the size of the ground glass. When OK, you draw another box inside the first square, but this time the size of your sensor, and ’centered’ inside. Then you can copy those two boxes and distribute them over the whole sheet, and maybe fit six or eight masks on your sheet, and then go ahead and print your ’design’ on the printable transparency sheet. Then cut and fit on top of your ground glass. Of course you could draw those boxes with a permanent pencil and ruler on a clear sheet of plastic.
You could wait for commercial Phase One masks to appear on ebay, but your transparent sheet gets you going almost immediately. If you need to fix your ’centering’ that is easy with your drawing/ painting program.
 
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MartinN

Well-known member
The important property is that the sensor is usually completely centered in relation to the ground glass, so the sensor sees a box, the size of the sensor, in the center of the ground glass.
 
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MartinN

Well-known member
The memory cards should probably be UDMA 6, and not the newest UDMA 7. So probably avoid the new 64GB , 128GB cards. If buying used cards, you could get Sandisk Extreme III or Extreme IV. But probably modern, new from store, 4GB, 8GB or 16GB would be fine.

There is some discussion, but I would avoid the biggest cards:

https://www.getdpi.com/forum/index....me-pro-udma7-supported-by-phaseone-p30.61181/

If the cards states UDMA 7 that is probably to avoid, if nothing is written about UDMA 7 , the card could be ok.
 
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anyone

Well-known member
GeorgeLG said:
What are my options for a "mask" or other way to mark the image area in the viewfinder when using the P25+ digital back?
Click to expand...
I would mail phase one support/ local dealer to see if there are any of the original masks left. If not, Martins approach sounds good. In the past I also cut masks from black cardboard, works as well.
 
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MartinN

Well-known member
anyone said:
I would mail phase one support/ local dealer to see if there are any of the original masks left. If not, Martins approach sounds good. In the past I also cut masks from black cardboard, works as well.
Click to expand...
I now think the V back is rotatable in landscape and portrait mode, so you could draw a sensor size box in portrait, centered, and on top of that, another box in landscape, also centered. That is how my Mamiya RZ masks from Phase One looks like.
 
FloatingLens

FloatingLens

Well-known member
It is also possible to use Hasselblad clear plastic drop-in masks that were supplied with their 6x4,5 film backs. Those are more or less easy to get hold of. The 4x4 and 6x4,5 cutout approximates the sensor crop of the P20/P25.
 
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Ben730

Well-known member
George
I will search my studio for some of those masks. I have some, but I don't know where.
When I hopefully find them, I will send them to you with the back....
 
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GeorgeLG

New member
Thanks to everyone helping me get a smooth start in MF digital. What are good brands of batteries and charger? Kastar looks readily available. Do you need to spend more for reliability and battery life? Thanks,

George
 
Godfrey

Godfrey

Well-known member
What is the sensor format in this back? If it's the 44x33 format same as the Hasselblad CFV50c back, you can get the Hasselblad focusing screen which has scribed framing lines. They're no longer available new, it seems, but there's plenty of NOS available from Ebay. Just search for "Hasselblad CFV-50c focus screen".

Hasselblad_CFV50c_screen.jpg

I bought one each for my two 500CM bodies, that I use with the CFVII 50c back.

G
 
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