Tuesday, April 30, 2013

DSLR and shutter speed

What I got from this blog:
http://tylerginter.com/post/11480534977/180-degree-shutter-learn-it-live-it-love-it

and this blog:
http://www.canon5dtips.com/the-basics/the-effects-of-shutter-speed-control/

Are that if you come from the world of photos going to video:
- When it comes to exposure you're boxed in by FPS.  Think about it, if you are shooting 24 fps, the most amount of time any frame of video could get would be 1/24th of  second.
- So when it comes to shutter speed, it can't be longer than your fps.  It can only be smaller than your fps.

- We're all used to seeing shutter speeds that are at least 1/2 of the fps (as explained nicely in the blog).  Going to smaller than 1/2 of the fps make the picture look stuttery (think Gladiator).  You never want to go longer than 1/2 fps (too smeary).
- See this Lynda.com blog entry to see another example of less and more than 180 degree shutter.

- So when it comes to me taking video on my DSLR I'll likely choose FPS and its default shutter speed, and the really use aperture and ISO as the variables to get the right exposure.


Sunday, April 28, 2013

If you're getting started with a new pool, here's what you need...

After taking care of my pool for 1 year (came the with the new house), here are some of the key things I needed:


Chemicals I use regularly:

  • Liquid chlorine
    • Power raises calcium hardness over time
    • Tablets raise CYA over time, both are VERY hard to get rid of later on.  
    • Store in cool, shaded place.  Doesn't lose potency if used within a month (according to a site I recently came across).
  • Muriatic acid (to lower pH)
  • Polyquat algaecide when I feel like it to prevent algae growth if it gets really warm



Thursday, April 25, 2013

Cronos Pro

Is a very nice font I gotta say.