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Leaf chasing 'blad - 50 Mpix MF DSLR announced



 
 
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  #21  
Old September 12th 08, 10:13 AM posted to rec.photo.digital.slr-systems,rec.photo.equipment.medium-format
Q.G. de Bakker
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Posts: 221
Default Leaf chasing 'blad - 50 Mpix MF DSLR announced

RichA wrote:

Good thing they have lots of "Leaf" lenses to do it with. Hah hah
ahah !


As Alan has mentioned, this system can use the lenses designed for the
6008i
series of cameras. So, there are a full range of lenses available.

Neil


None of them actually made by Leaf. They can't take on Hasselblad, or
Phase, or.....


All of them having a leaf shutter...

By the way: none of the lenses you can put on a Hasselblad camera are made
by Hasselblad. Perhaps that could be a reason too why Hasselblad can't take
on Hasselblad either? ;-)

Hasselblad is a direct competitor of Leaf, and vice cersa, since the
Hasselblad H-cameras too are no more than a platform to take Imablad digital
backs. In a similar way, Sinar and Leaf commissioned Franke and Heidecke to
build a platform for their respective digital backs.
The Hasselblad camera takes Fujinon lenses. The Leaf camera takes Zeiss or
Schneider lenses.
And both use Kodak (Leaf's owner) sensors. ;-)


  #22  
Old September 12th 08, 03:03 PM posted to rec.photo.digital.slr-systems,rec.photo.equipment.medium-format
Q.G. de Bakker
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Posts: 221
Default Leaf chasing 'blad - 50 Mpix MF DSLR announced

Scott W wrote:

In fact, it is relevant information, pure information, image
information.
Whereas you need additional information, irrelevant, non-image
information,
information about the compression algorithm, to compress and (more
importantly) decompress compressed information.


Let me give a very simple case, take a string of 1,000,000 1s, that
may be a lot of data, but very little information in all those 1s.


Let me explain another way.
How many bytes are used to store information is one thing.
Te thing however is that the value, the information content, in your example
above is 1,000,000. All 9 digits used to describe/hold that bit of
information indeed contain information.
You can perhaps use less storage to hold that same information (increase the
information per bit density), but the full "1,000,000" still is "information
content". Not something that remains, forms a "rest", besides "information
content".
;-)


  #23  
Old September 12th 08, 03:11 PM posted to rec.photo.digital.slr-systems,rec.photo.equipment.medium-format
Q.G. de Bakker
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Posts: 221
Default Leaf chasing 'blad - 50 Mpix MF DSLR announced

Neil Gould wrote:

For that matter, the camera isn't made by Leaf, either. It's made by
Franke
& Heidecke, recognized as "Rolleiflex" at other points in history, hence
the
use of lenses compatible with the Rolleiflex 6008i, their previous
generation camera. It wouldn't take much study on your part to gain an
understanding of this, rather than post more misinformation.


Uhm... Rolleiflex goes with the Rollei company, the direct descendant of
Franke and Heidecke, and a company that still exists today.
Rollei no longer make Rolleiflex cameras (or do they still?).

But the Franke and Heidecke company of today, the engineering company do.
They also produce the Sinar/Leaf thing.
Yet they are neither Rollei nor the Franke and Heidecke of yesteryears.
Should therefor not be "recognized as".



  #24  
Old September 12th 08, 03:28 PM posted to rec.photo.digital.slr-systems,rec.photo.equipment.medium-format
Neil Gould
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Posts: 262
Default Leaf chasing 'blad - 50 Mpix MF DSLR announced

RichA wrote:
On Sep 11, 8:52 am, "Neil Gould" wrote:
Richard wrote:
"Alan Browne" wrote in message
...
Hasselblad are not alone with a 50 Mpix MF...


Good thing they have lots of "Leaf" lenses to do it with. Hah hah
ahah !


As Alan has mentioned, this system can use the lenses designed for
the 6008i series of cameras. So, there are a full range of lenses
available.


None of them actually made by Leaf. They can't take on Hasselblad, or
Phase, or.....

For that matter, the camera isn't made by Leaf, either. It's made by Franke
& Heidecke, recognized as "Rolleiflex" at other points in history, hence the
use of lenses compatible with the Rolleiflex 6008i, their previous
generation camera. It wouldn't take much study on your part to gain an
understanding of this, rather than post more misinformation.

The bottom line is that these companies are direct competitors in the
photographic marketplace, and have been for many decades.

--
Neil



  #25  
Old September 12th 08, 03:37 PM posted to rec.photo.digital.slr-systems,rec.photo.equipment.medium-format
Neil Gould
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Posts: 262
Default Leaf chasing 'blad - 50 Mpix MF DSLR announced

____ wrote:
In article ,
Alan Browne wrote:

So, when I used dpi, above to describe how many pixels I get off of a
film scanned at so many dpi, you still complain?

C'mon John!

Cheers,
Alan


When you bring the scanned image into photoshop the dimensions say (x)
pixels by (y) pixels not x dpi by y dpi..... thats a function of your
printer and unfortunately your scanner software.

Actually, when you bring the image into Photoshop, it will report both x by
y pixels and the resolution in ppi. Since dpi has been historically
associated with ppi because the application of the terms is identical, there
is no valid reason for confusion, and even less for the misinformation that
is being presented in this thread. Dot gain is a non-issue w/r/t the ppi (or
dpi) of the image, and neither cameras nor scanners capture "dots" in any
case.

--
Neil



  #26  
Old September 12th 08, 03:37 PM posted to rec.photo.digital.slr-systems,rec.photo.equipment.medium-format
John McWilliams
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Posts: 6,945
Default Leaf chasing 'blad - 50 Mpix MF DSLR announced

David J. Littleboy wrote:
"John McWilliams" wrote:
If you can't understand what is meant by dpi in this standard
usage/meaning, you really shouldn't be posting in a photo forum; your
mind just isn't up to the task.

I am quite surprised by this, David J., coming from one who is generally
solid and doesn't seem to have a dog in this fight.


My dog in this fight is that I object to stupid obnoxious pedantic
lecturing, especially when it's basically wrong. As it is in this case,
since Alan was talking about scanning, were dpi is the standard term.


Well, as I hope you've seen by now, it wasn't wrong, and if you think
using correct terminology is pedantic, so be it.

Yes, DPI is used a lot in scanning, but the results are always pixels,
expressed as ppi.

Clear now?

--
john mcwilliams
  #27  
Old September 12th 08, 04:41 PM posted to rec.photo.digital.slr-systems,rec.photo.equipment.medium-format
Q.G. de Bakker
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Posts: 221
Default Leaf chasing 'blad - 50 Mpix MF DSLR announced

Neil Gould wrote:

Not really. Pixels per inch (ppi) has no meaning that isn't communicated
equally well as dpi. Both describe an abstraction that has nothing to do
with the image itself, as a digital image only contains a matrix of pixels
that have no size.


Not quite the image itself, no. That only has pixels.

But with the processes of scanning and printing.

A scanner is able to produce only a certain number of pixels per unit of
length or width.
The pixel size of the image is limited/determined by that.
So the PPI of a scanner has indeed something to do with the image. But only
until it is scanned.

A print consists of dots of ink, thrown, or transferred onto a bit of paper.
There too the machinery involved and technique it uses is setting limits to
what the picture it produces can be. It has very much to do with the image
itself.

Whereas a pixel is a pixel, a dot is not a pixel. How much dots make up a
pixel is determined by the print technology.

So PPI and DPI are not (!) interchangeable.


However... the incorrect usage of both terms is already so widespread
that...

On the other hand, we have managed very well to get rid of the silly use of
the word "prime".
I, for one, are hard working trying to irradicate the use of "mirror lock
up" when pre-release is meant. And would you believe it, signs are beginning
to show that people take notice!

So why not try to set this "dpi" thing straight too?
;-)


  #28  
Old September 12th 08, 04:46 PM posted to rec.photo.digital.slr-systems,rec.photo.equipment.medium-format
Q.G. de Bakker
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Posts: 221
Default Leaf chasing 'blad - 50 Mpix MF DSLR announced

Neil Gould wrote:

Hmmm. This smacks of the pedantry of the "dpi" discussion. ;-)


Uhmmm... Yep!
;-)


  #29  
Old September 12th 08, 04:49 PM posted to rec.photo.digital.slr-systems,rec.photo.equipment.medium-format
Q.G. de Bakker
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Posts: 221
Default Leaf chasing 'blad - 50 Mpix MF DSLR announced

Q.G. de Bakker (yes, that's me) wrote:

I, for one, are hard working trying to irradicate the use of


Those too-big-words again...
'eradicate', of course.




  #30  
Old September 12th 08, 06:16 PM posted to rec.photo.digital.slr-systems,rec.photo.equipment.medium-format
____
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Posts: 534
Default Leaf chasing 'blad - 50 Mpix MF DSLR announced

In article ,
"Q.G. de Bakker" wrote:

Q.G. de Bakker (yes, that's me) wrote:

I, for one, are hard working trying to irradicate the use of


Those too-big-words again...
'eradicate', of course.


Since you are trying and doing well!


I will add that the phrase: I, for one "R" hard working, is a plural use
when an exact use phrase - I for one, am hard working (or best) - hard
at work to eradicate -sounds better.

--
Reality is a picture perfected and never looking back.
 




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