P90+ / H4D-90 in the future?

[PaulSchneider]

Hi guys,

I just stumbled upon this news article on new DALSA sensor developments for aerial photography (sorry if it already has been posted, but a quick search didn't make it seem so):

http://www.dalsa.com/corp/news/news.aspx?itemID=224

This quote to me seems interesting:

"For medium-format mapping applications, the new UltraCamLp delivers 92 megapixels (11,704 pixels x 7,920 pixels) in a package ideal for smaller aircraft and local projects that require a rapid response with the highest image quality, such as digital surface model production, aero triangulation, ortho mapping and 3D technical vector mapping."

I'm not savvy enough in this area, but could this possible be a hint towards future products? Maybe a medium formar sensor with 92 megapixels doesn't seem so far-fetched after reading this?

What timeframes are we possible looking at? Photokina? I wouldn't be too happy about that, since I ordered the H4D-60 ...

Regards

Paul

[vgogolak]

Actually the multiple sensor comment may be more indicative of the future. With stitch and blending getting so good and fast, a 100MP camera would do better with a 5% overlap and 4 26MP sensors, with parallel readout. It also keeps heat down.

Even before that, I expect to see a solid state cooled sensor substrate; the big challenge is NOT feature size; we have 3-5 micron sensors now, they are just noisy. Need active cooling

Victor

[EricWHiss]

Dang!  Another 3::2 sensor!

[marc gerritsen]

Dang!  Another 3::2 sensor!

i think the quest for larger sensors it not going to stop
until it fills a wall of a living room sized camera obscura
i am sure that nano technology and sensor technology combined could
come up with some interesting sensors

[PaulSchneider]

Is there a theoretical barrier of MPs one has to reach, in order to get 8 x 10 " resolution from a MFDB? Supposedly, MFDBs have already reached the resolution of drum-scanned 4 x 5 " ...

Are we talking about 100, 200, 350 MPs?

[vandevanterSH]

Is there a limit on sensor size, up to  for example,  the max size of a silicon wafer other than cost?  I saw a photo recently of one of the detectors at CERN and the photo sensors, which they said were similar to those used in digital cameras,   appeared to be the size of a paper back book.

Steve

[Dick Roadnight]

Is there a theoretical barrier of MPs one has to reach, in order to get 8 x 10 " resolution from a MFDB? Supposedly, MFDBs have already reached the resolution of drum-scanned 4 x 5 " ...

Are we talking about 100, 200, 350 MPs?

Sensors are limited to the size of the silicon wafer you make them from, and, last time I heard, the limit was about 6 inches diameter.

If you print at up to 10 times the dimensions of film, or as little as 360 pixels per print inch, 645 digital (60Mpx) is equivalent to 645 film... or equal area, and a 10 * 8 chip would, I think, not be possible with current technology.

...but some think that 60Mpx is already as good as 10* 8 - is there any definitive quantitative assessment that proves that digital is as good as scanned 5*4? I f 645 equates to 45, 69 would equate to 10* 8.

[Barkeeper]

It´s not about the sensor - it´s about the lens...  

If you take a closer look at the Rodenstock HR Digaron-S 23mm you will see that this lens has a mximum resolution of 60 megapixel.

As shown by the MTF-curves, even at the image corners sharpness is high enough to utilize the resolution power of the highest-performance sensors with up to 60 megapixels and a pixel pitch of only 6 µm (therefore we indicate the MTF for max. 80 line pairs per millimeter).

http://www.rodenstock-photo.com/en/main/pr...y/hr-digaron-s/

Personaly, I don´t think that other lenses will have better results.

I would prefere a higher dynamic range instead of more resolution.
(50 MP is enough for me and my clients)

Barkeeper

[Dick Roadnight]

It´s not about the sensor - it´s about the lens...  

If you take a closer look at the Rodenstock HR Digaron-S 23mm you will see that this lens has a mximum resolution of 60 megapixel.

"As shown by the MTF-curves, even at the image corners sharpness is high enough to utilize the resolution power of the highest-performance sensors with up to 60 megapixels and a pixel pitch of only 6 µm (therefore we indicate the MTF for max. 80 line pairs per millimeter)."

Barkeeper

The limitation is 6 micron pitch, not the 60Mpx sensor res, so a lens with this res and a big enough image circle can resolve more than the currently highest performing sensors, that have up to 60 Mpx, by using stitching. Schneider have announced Wide angle digital lenses with image circle for stitching or movement, have they not?

The res of digital lenses is limited by their relatively small image circles, and large format film lenses are higher res, as, even if you argue that their lp/mm res is half that of digital specialist lenses, if you have an image circle of half a meter, using ULF film or using multi-row stitching, you can get more res, pixels or ∏r^2(lp/mm)^2.