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Quorten Blog 1

First blog for all Quorten's blog-like writings

Wow, interesting article on UV photography with a DSLR camera. In fact, one of the first! Nikon D1X. And it worked quite well, as far as the sensor was capable. So, what do you need to do? The main thing you need to do is get the right lenses. Then, make sure you prevent any stray light from entering the viewfinder, and take long exposures with exposure compensation, due to the low light levels of ultraviolet light.

20161210/http://www.naturfotograf.com/UV_IR_rev01UV.html

Interesting site, why don’t I take a look at the home page?

20161210/http://www.naturfotograf.com/index2.html

20161210/https://en.wikipedia.org/wiki/Nikon_D1X

Wow, interesting, the Wikipedia article makes citation to the same person who wrote that site!

At the time, Bjørn Rørslett famously stated that the camera spelled “The End of The Beginning (of the digital era) - The Beginning of The End (of the film era)”. The development of the D1 is generally accepted as one of the major milestones in the development of the digital camera, and Kodak’s initial market dominance was genuinely threatened for the first time.

So wait. Wait, wait, and I thinking this properly? Actually, the first digital cameras were DSLR cameras? Not compact cameras? Have I been fooled? I think I have. Er, wait, wait, let me think this through… no, I haven’t been fooled. In fact, the first digital cameras were video cameras, camcorders, of course. Then the technology slowly, but rather early on, migrated into DSLR cameras.

I guess, the point I want to make is, first compact digital CCD sensors were used in camcorders, then they were used in DSLR cameras, and later on they were used in mass-market compact film cameras.

20161210/https://en.wikipedia.org/wiki/Kodak_DCS

APS-H? How does that compare to APS-C? It is a lower crop factor, meaning we’ve got a sensor area more comparable to the 35 mm full-frame.

20161210/https://en.wikipedia.org/wiki/Crop_factor
20161210/https://en.wikipedia.org/wiki/Medium_format_camera
20161210/https://en.wikipedia.org/wiki/Toy_camera

Okay, I have to see the article, on digital camera.

20161210/https://en.wikipedia.org/wiki/Digital_camera
20161210/https://en.wikipedia.org/wiki/History_of_the_camera#Digital_cameras

Yep, I was definitely fooled, though. DSLR cameras have been around for quite some time, actually. It’s just that, well, taking into consideration what was said in the Wikipedia article on medium format cameras, it’s probably safe to say that the general consumer and market disposition was that the most advanced automatic technology was available in mass-market compact cameras. Hence the widely held (and in some sense, accurate) belief that compact digital cameras came to market first, then DSLRs became popular later on.

Full-frame DSLR cameras were definitely a later development, though. The first DSLR cameras used crop sensors, so yes, the previous statement is true in some sense. The first DSLR cameras were technically not too much better than later compact digital cameras in terms of sensor resolution and sensor area. But yes, they definitely did have optical quality advantage, just not nearly as much advantage as today’s DSLR cameras have.

Okay, wait, let’s see if I can find better history on camcorders. No I can’t, but I can find a lot of interesting articles on disc rot. And oh yeah, the M-DISC again, that’s interesting that we also have a Wikipedia article on it.

20161210/https://en.wikipedia.org/wiki/Camcorder
20161210/https://en.wikipedia.org/wiki/CMOS_imager
20161210/https://en.wikipedia.org/wiki/Disc_rot
20161210/https://en.wikipedia.org/wiki/CD_bronzing
20161210/https://en.wikipedia.org/wiki/Data_degradation
20161210/https://en.wikipedia.org/wiki/M-DISC
20170219/https://en.wikipedia.org/wiki/M-DISC

  • Take note: M-DISC supports the BDXL 100 GB capacity format.

BTRFS is now stable!

20161210/https://en.wikipedia.org/wiki/Btrfs

What?! Discs that are designed to become unreadable?

20161210/https://en.wikipedia.org/wiki/DVD-D
20161210/https://en.wikipedia.org/wiki/Flexplay

Yeah, the Flexplay article has extensive evidence of how disliked the idea is. The truth is, people don’t like disposable things.

Okay, so now you’re telling me, the quality differences between CMOS and CCD sensors are now negligible. Also, both CCD and CMOS sensors use the same photodiodes, so the only difference is that of architecture, where CCDs have more image area than CMOS sensors, but again, the disadvantages of CMOS sensors are disappearing. Cool.

20161210/https://en.wikipedia.org/wiki/Active_pixel_sensor

So definitely, it turned out that I did not get an adequate historical treatment on digital image sensors in video cameras by reading the camcorder article.


Interesting. You can also do ultraviolet photography with the Raspberry Pi NoIR camera.

20161211/http://hackaday.com/2014/05/01/using-the-raspberry-pi-to-see-like-a-bee/