David Clark

Lives in United Kingdom Laurencekirk, Scotland, United Kingdom
Works as a Photographer & Lab Owner
Has a website at www.clarkphotos.co.uk
Joined on Jan 3, 2001
About me:

Owner of digital schools and bulk portrait lab
Featured in the Fuji S1 advert - UK
Scottish Wedding Photographer of the Year 2000


Total: 4, showing: 1 – 4
In reply to:

Ian: Really nice article, but one omission - the original scanning RGB sensors that took 3 separate exposures. Great for still shots, but not much else, which necessitated the Bayer filter.

around year 2000 Betterlite had a scanning back for large format - that, as the name suggested, scanned in all three colours - so a 6000x8000 pixels was the standard. It took a minute or more to take each photo - which limited them to product photos in the studio, using non-flash. The image quality was superb - but each capture took ages. They are still popular for copying artwork - though in busy galleries they tend to use multishot phase one or hasselblad....

Link | Posted on Mar 30, 2017 at 13:18 UTC

I have an early Kodak camera - the 720x - which used yellow, magenta and cyan filters in a Bayer pattern - and the reason was that they passed more light than the RGB - I was always under the impression - again from the Kodak 7xx series cameras that the RGB lost two stops of light and the CMY lost 1. Kodak made a mono version of the 760 - called the 760M - which gave two stops more usable exposure than the 760. The 760M was very very rare - and sold for quite a premium. The 7xx series cameras were also unusual in having a IR filter in front of the mirror - in an effort to cut dust ingression - and it could be removed to make the camera an excellent IR camera (with a red or better still 88 filter). The colour off the 720x with the CMY filters was good, though reds always went quite orange - though revisiting original files with a new version of lightroom gives much better colour and demosacing.

Link | Posted on Mar 30, 2017 at 12:53 UTC as 13th comment
On article Nikon announces development of flagship D5 DSLR (442 comments in total)
In reply to:

Paul Farace: Not much news here. I guess Nikon is promising us pie in the sky... it will be interesting to see some hard news eventually. We'll be standing by, waiting.

of course there will be a D5 next year - because it is a year when there is an Olympics.... and there is a Photokina.

I just hope they chase wider tonal and dynamic range rather than just pixels. (and no doubt higher usable ISO and quicker frame rates - and better video)
I run a lab and we are having issues with clients doing small prints from Nikon D810 and particularly the 50 MP Canon - the prints are going soft as there are interpolation issues downsampling - in the same way as there are up sampling!

Link | Posted on Nov 18, 2015 at 10:15 UTC
On article Facebook buys photo sharing service Instagram for $1bn (144 comments in total)

Remember, if you do something online thats free, its you thats being sold....

Link | Posted on Apr 9, 2012 at 22:47 UTC as 35th comment | 1 reply
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