"Macro-photography are done at 1x ~ 2x magnification. Microscope on the other hand could easily deliver a 40x magnification without eyepiece. In this post, we are peeping into the basic element that captures the image in digital photograph – a pixel on CMOS sensor. I had obtained a Nikon JFET LBCAST sensor from a broken D2H imaging board. LBCAST is still based on CMOS fabrication technology and it’s an Active Pixel Sensor.
Photographing an opaque sample compared to biological slice is extremely difficult, since ordinary trans-illumination will not work. An epi-illumination, de facto illuminating through the objective, should be used instead. Basically a half mirror is in place of the optical path to direct light towards the objective, then back in to the eyepiece and camera. Epi-fluorescence will use a dichroic mirror and a pair of filters."
This is The-Digital-Picture.com's Weekend Recap for the week ending February 9th, 2013
In the news...
Sigma started this week with a brand new, redesigned website. The site now features an all-new product finder, redesigned photo galleries, a comparison tool, and an expanded Sigma lounge.
On Monday, Sports Illustrated published a Gigapan image captured during the first quarter of Super Bowl 47. The overall Gigapan image is made up of 220 individual images and is roughly 3,800 megapixels in total size.
On Wednesday, we reported that Canon confirmed a firmware fix is in the works for the 1D X and 5D Mark III DSLR cameras. The firmware fix will address slow autofocus performance when using the AF assist beam feature of a shoe-mounted Canon Speedlight.
On Thursday, Bryan published a set of standard-thickness, 82mm circular polarizer test results to the site’s vignetting comparison tool. Using the comparison tool, visitors can now see the how much “mechanical vignetting” to expect when using a circular polarizer with lenses such as the Canon EF 24-70mm f/2.8 L II USM lens.
On Friday, lens distortion and vignetting test results were added for the Sigma 24-70mm f/2.8 EX DG HSM lens, while vignetting test results were added for three other Sigma lenses.
And, for our deal of the week…
Also on Friday, we published a deal from BuyDig.com where you could get a Canon 40mm f/2.8 STM lens for $144.00 with free shipping – that’s a $55.00 savings off the normal retail price.
This has been the The-Digital-Picture.com’s Weekend Recap. Thanks for listening, and as always, happy shooting!