Wednesday, 14 December 2011

MIT's trillion frames per second light-tracking camera

From MIT 

Visualizing Photons in Motion at
a Trillion Frames Per Second

"We have built an imaging solution that allows us to visualize propagation of light. The effective exposure time of each frame is two trillionth of a second and the resultant visualization depicts the movement of light at roughly half a trillion frames per second. Direct recording of reflected or scattered light at such a frame rate with sufficient brightness is nearly impossible. We use an indirect 'stroboscopic' method that records millions of repeated measurements by careful scanning in time and viewpoints. Then we rearrange the data to create a 'movie' of a nano-second long event."

Tuesday, 6 December 2011

Lightroom 3

I have just upgraded to Lightroom 3 at a cots of £160.  I am very pleased with the improvements that Adobe have made.  

I would go so far as to say that as a photographer Lightroom 3 provides most, if not all the tools needed for post production of your images. 

But see for your self in this video which provides a very good overview of the main features of Lightroom 3 

Press the button at the bottom right corner of the video window to see the video  at full screen size

Thursday, 1 December 2011

SPA View Point

From SPA

"Just a note to remind everyone that we now have a subsection of the SPA website called Viewpoint where the SPA committee seek constructive input from clubs and their members about topical issues affecting the SPA.

 Anyone can read the content but you need to register if you wish to add comment. The process is quick and easy and ensures that we can exclude unwelcome, malicious or spam material.

Please note that this is not a general discussion forum and we are restricting content to key issues. However, anyone is free to suggest topics for inclusion."

Day of Action a photographic opportunity

Day of actionThe day of action organised by the TUC against changes to civil service pensions provided a great opportunity for some street photography.
 I  took up position on a traffic island in the centre of the Strand in London.  People were only too happy to have the pictures taken.

I used a Canon EF100-400mm f/4.5-5.6L IS USM zoom lens on my Canon 40 D to try and pick out individual faces and blur the background.

The light was not too good so I set the ISO to 800 and the image in this post was shot at 115 mm, f/4.5 1/200 sec.

The march was very good natured with a very heavy police presence; but it is a very good idea to keep aware of your environment because things can change very quickly.

This video provides a feel for the atmosphere at the  demonstration