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New CFV 39 MPix back also for 20x cameras

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Ok, one more inquiry -
The specs list most lens corrections on CFE and CFI lenses, although it does seem to support the 40mm CF lens with FLE (which I own). Will the software not be able to correct CF or earlier lenses, other that those listed?
 
michaelhcothran said:
This announcement is exciting news, but I'm curious about the following -
Can the CFII-39 back can be mounted to a V body with a rotating adaptor? And if so, why can't the new CFV-39? And if not, wouldn't you think that perhaps there is a rotating adaptor in the makes, to be introduced later?

Bottom line is, I still prefer square, and 29 mpix should render better detail than 16 mpix. But it still seems ashame to waste 10 mpix of image data that you're paying for! I'd prefer to "modify" my ways and shoot rectangle with the full 39 mpix (if I could ever afford one).
Click to expand...


Michael

As far as I know , there has never been a rotating adapter for the CFII-39 . I have never seen one . Mamiya ? ? ?
If I am wrong , please show me that adapter .

The CFV-39 hooks up to the camerabody in the same way than the CFVI/II .
If you shoot square with the CFV-39 you will get an image with 29MP with a pixel size of 7,2 micron .
The CFV gives you an image with 16MP and a pixelsize of 9 micron .
The CFV has 16MP .

Here you have the advantage , that the square image with the CFV-39 has a higher resolution than the image with the CFVI/II .

I think , there is no need for a lens correction in PHOCUS . At least not for the CFVI/II back . The CZ glass is so extremely good .

For the 39MP with the much higher resolution , you can use the corrections . Think of the possibility using V-SYSTEM lenses on an H-SYSTEM camera with the CF adapter . Is a correction required there ? ? ? I don't know .

Might be that there will be more lenses in the list in the future , which can then be updated by the PHOCUS software .

Perhaps Paul Cleasson can tell us more about this lens correction .

As far as I understand the lens correction up to now , you must note the distance and the aperture and type of lens you used , because they can not be stored in the exif data . There is no databus between the camera and the lens .

Jürgen
 
Michael

I was wrong with the pixel size .
The pixel size for the CFV-39 is not 7,2 micron but 6,8 micron .

I have just looked up the data sheet for the CFV-39 and find , that everything is very well described .

To shoot square format images , you can select "square" .
But you can also shoot in full format and choose your own crop (square or any other format) later in your workflow .

Jürgen
 
jotloob said:
Paul (C)

I had an order for a CFII-39 back , just a week old , but it got cancelled today .
A new order is set up for the CFV-39 back and I am very much looking forward for the delivery .
According to HASSELBLAD Germany , delivery will be in August .

As most of my work is square format , some is rectangular but horizontal , I will not have any trouble using the CFV-39 backs format .

I am very happy , that HASSELBLAD decided to produce that back for the many V-SYSTEM users . That appeases me with HASSELBLAD again .
And . . . . I will keep my CFV back .

CFV-39 come here :z04_whip2_1:

Jürgen
Click to expand...

I am very, very, very curious to learn of your experiences with the CFV-39...

Could they already give you a price?

Wilko
 
wbulte said:
I am very, very, very curious to learn of your experiences with the CFV-39...
Could they already give you a price?
Wilko
Click to expand...

Wilko

I had a phone call with HASSELBLAD Germany yesterday .

The price for the CFV-39 will be 10.000 € + VAT .
Delivery date will be August . + - ?

Regards Jürgen
 
Note - the 1.1 crop is only if you use the entire rectangle sensor. For square shooting, the 1.5 crop remains the same - no advantage here.
********
Correct..I think that would be an advantage for the landscape photographer to be able to fully utilize a 40mm or a 38mm Biogon (even though the latter isn't recommended.) in a rectangular format. I am looking forward to Jurgen's evaluation.
 
It is right some manufacturers of DB do not recommend the use of the SWC with its Biogon lens.
Although the theory behind this recommendation is valid up to a point in practise no serious negative effects occur.

I am sure Jürgen will use one of his Super Wides to show what is possible with the new back.
Why not select the oldest Super Wide from 1954 for this occasion?
 
Thanks Steve for the PDF.

Hasselblads own optical specialist, Per Nordlund, agrees that in the practical sense this phenomena is less of a problem.

People from Phase One even mentioned their P 65 shows the limits of the Biogon design.
Looking at Zeiss data for the Biogon makes clear this is not the case.

Lets see what Jürgen comes up with.
I am confident he will be able to show us images that will give some idea what the CFV-39 is capable of.


Paul
 
I think , there is no need for a lens correction in PHOCUS . At least not for the CFVI/II back . The CZ glass is so extremely good .
Click to expand...
Yes, Zeiss lenses are excellent performers, but wouldn't be nice to have the option to correct for optical distortion or vignetting if desired.

For the 39MP with the much higher resolution , you can use the corrections . Think of the possibility using V-SYSTEM lenses on an H-SYSTEM camera with the CF adapter . Is a correction required there ? ? ? I don't know .
Click to expand...
Is correction required, no.
The same corrections are available in either configuration, V system body with Zeiss lenses or H system, CF adapter and Zeiss lens. Again the choice is up to the photographer.

Might be that there will be more lenses in the list in the future , which can then be updated by the PHOCUS software .
Click to expand...
I think the list is pretty comprehensive:
CF/CFE 40 FLE, CFE 40 IF, CFi 50 FLE, CFi/CFE 80, CFi/CFE120, CFi 150, CFE/CFE 180, CFi 250, CFE 250 Sa and CFE 350 Sa

What lenses need to added?

Perhaps Paul Cleasson can tell us more about this lens correction .

As far as I understand the lens correction up to now , you must note the distance and the aperture and type of lens you used , because they can not be stored in the exif data . There is no databus between the camera and the lens .
Click to expand...
You must manually enter the following information into Phocus:

Focal Lenght
Aperture
Distance to subject

Paul C
 
@ Paul C,

What lenses need to be added?
I would suggest older designs that were later upgraded.
Those lenses would benefit most from corrections possible in Phocus.

For example: Several lenses from the C series like the 40 mm with or without T* and
of course the Tele Tessars both the 350 and the 500.
Chromatic aberration is certainly something that can be improved upon with the Tele Tessars.
No idea whether corrections need to be different for the 250 Sa from the C series and the later CF/E/i version.

Paul
 
What lenses need to be added?

The SWC/M, etc 38 mm would be nice, some version of the 60 mm, perhaps the 160 mm CB?
 
Arjuna

Have a look to the biogon.pdf.zip Steve gave in post #48 . You will see , that the main issue for the CZ BIOGON is , due to the lens design , the resulting "unsharpness" on the edges of the image .
As far as I know , unsharpness can not be corrected.

Jürgen
 
polarcircle said:
On Hasselblad website today is the new CFV 39 MPix digital back which now is also for 202,203 and 205 cameras. I think this is great news for all V system users. There seems also to be lens corrections like there is for H system. Square files can also be gotten from the back directly.
Click to expand...

Excuse my French, but it's about frickin' time Hasselblad threw us a bone for the V-system!
 
nathantw666 said:
Excuse my French, but it's about frickin' time Hasselblad threw us a bone for the V-system!
Click to expand...

And please excuse my lack of enthusiasm with the new back, but this back insults me. First, and foremost, I see this as a cannibalized digital back, made from parts already on the shelf. No different than what Packard, Hudson, and Studebaker all did as a last ditch effort before they dissolved. Not that Hasselblad is ready to go out of business, but that they threw the wool over our heads, hoping we'd be appeased with a rectangle back rather than a larger square back. Sorry, I'm not.
A larger square sensor would have done it. Losing the 1.5 lens factor would have done it. But I find it an insult to offer us a rectangle sensor for a camera NEVER meant to be turned on its side. Oh! That's right - we have the ability to shoot square if we want. So big deal. What's new about that??? Rectangle backs have long been available.
If Hasselblad wants to grab my attention, and make me want to part with hard-earned money, they'll need to do better - a larger square sensor, and less of a lens factor than 1.5. For now, I'll keep the CFV/V system I have. If I EVER decide to shoot rectangle, it WON'T be with a V body!
 
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