I’m a newbie underwater photographer, so if you googled or binged for tips and landed on this page, I’d advise you to think again and try the next hit. Hopefully google and bing won’t rank me high on the search list so I can write some rubbish about a subject I know so little about.
But I digress. Here are my tips:
- Use a flash. I didn’t, and I regret it.
- Always shoot on raw format, you’ll surely end up correcting your photos, and JPEG just kills most of the latitude you have. As Canon RAW drivers doesn’t support 64 bits, I didn’t, and I regret it.
- Always use goggles. I can’t focus and frame a picture under water without them.
- Choose a wide lens. First because water is a natural teleconverter. And above all because it facilitates focusing and framing, and boy this is hard to do under water – at least if you have so little experience as your blogger friend.
- On shallow waters avoid using high ISO. This pictures will need some post-processing, let’s us not make it unnecessary harder.
- update: Use internal focusing lenses. I’ve tried it with my video camera, an external focusing system, and the bag often kept the camera from focusing
- update: protect the flash hot shoe, it can damage the bag. I’m using my wife’s demakeup pads, but simple cotton will work just fine.
Here are some of these pictures (my laptop doesn’t have LightRoom installed, so the post-processing was… well… not too great…):
As announced, Windows 7 RTM was made available to msdn subscribers. I’m presently downloading an Enterprise version – my previous Vista version was a Business VLK but I couldn’t find such edition. Let’s only hope Microsoft will release VLK key tomorrow for this Enterprise edition.
We often use KB to represent kilo bytes. By doing this, we are making the following mistakes:
- If we want to represent it on a 10 base form, 103, we should use kB
- If we want to represent it on a 2 base form, 210, we should use KiB
Here are the 10 base prefixes we learned at school:
| Factor | Name | Symbol |
| 1024 | yotta | Y |
| 1021 | zetta | Z |
| 1018 | exa | E |
| 1015 | peta | P |
| 1012 | tera | T |
| 109 | giga | G |
| 106 | mega | M |
| 103 | kilo | k |
| 102 | hecto | h |
| 101 | deka | da |
And here’s what our children will learn:
| Factor | Name | Symbol | Origin | Derivation |
| 210 | kibi | Ki | kilobinary: (210)1 | kilo: (103)1 |
| 220 | mebi | Mi | megabinary: (210)2 | mega: (103)2 |
| 230 | gibi | Gi | gigabinary: (210)3 | giga: (103)3 |
| 240 | tebi | Ti | terabinary: (210)4 | tera: (103)4 |
| 250 | pebi | Pi | petabinary: (210)5 | peta: (103)5 |
| 260 | exbi | Ei | exabinary: (210)6 | exa: (103)6 |
<update>
Now that I think of it, we should use SI standards to end the English speaking vs. rest of the world billion ambiguity. We should start using SI nomenclature on the financial world, stop talking about 10 billion dollars, and start talking about 10 tera dollars. Or 10 giga dollars, see what I mean? :)
</update>
As we all know, the academic community is highly paper-oriented. And this is good, this is the guarantee that scientific knowledge flows on a global scientific network, but there is more than publishing quantity, and it poses problems to those that don’t publish so often. I was discussing this with a friend, a researcher in an area other than mine, and he referenced something he read on a magazine:
What can an academic say about Jesus work? Well, definitely a great teacher, but he doesn’t have anything published, does he?
Fun !
This definition is an old well known geek joke:
What's the correct dictionary definition for recursion? See: recursion.
I’ve already posted about it. But here’s something cooler: try and google recursion, and you’ll end up being corrected with:
Cool :)
