bretti_kivi

Joined: 13th May 2009

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bretti_kivi
I know of several fora with "members only" areas.

On the English language ones, it's to enable "gentlemen" to discuss without profanity being an issue and "glamour" is also not a problem.

On the German one, it's because it's a real club with fee-paying members and they get something for their money.

"by application only" and after a while of being on the board are common entry requirements.

Bret

Comment by bretti_kivi posted on Private/members only space ? at 23/01/2011 - 21:05

bretti_kivi
a couple from our escape to the "wilderness"; snow up over my knees, but a full thermos and the K10D in the sled

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wondering now about the WB on this....

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Yes, that's a picnic table, and about half the snow is already gone from the top.

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Critical views:

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C&C welcome

Comment by bretti_kivi posted on colour - no, honestly, they are! at 23/01/2011 - 20:58

bretti_kivi
well, excellent fire and sausages with my own + loan child today. Impressive quantities of snow, too; I was over my knees several times and had steaming socks when I emptied the snow out

Couple of pics on the other laptop, will go and process some more now.

Bret

Comment by bretti_kivi posted on Another pointless thread at 23/01/2011 - 20:33

bretti_kivi
There's a rather good wikipedia article on the subject, and it includes the following formula:

focal squared / f x 0.02

that's it. It's not complex.

Example: 28mm lens, f8.

28 x 28 = 784
8 x 0.02 = 0.16
784 / 0.16 = 4900

Therefore: set focus to 2.5m and f8 on that 28mm SMC-M and leave it.

I've been working with this at work for video footage and it works pretty well. Everything really is reasonably in focus, too, and that to infinity.

To make it really easy and to give some reference points, here a quick excel table, working in mm at both f8 and f16. You can do the rest of the maths yourselves

Set focus to these distances and everything from within half of the distance to infinity will be acceptably in focus.

mm....f...distance
10....8....625
12....8....900
14....8....1225
15....8....1406.25
16....8....1600
18....8....2025
20....8....2500
24....8....3600
28....8....4900
30....8....5625
40....8....10000


10....16....312.5
12....16....450
14....16....612.5
15....16....703.13
16....16....800
18....16....1012.5
20....16....1250
24....16....1800
28....16....2450
30....16....2812.5
40....16....5000


hth.

Bret

Comment by bretti_kivi posted on Hyperfocal distances at 23/01/2011 - 20:26

bretti_kivi
... which is why the best software also asks "only if unsure". And then if your new PDF 'sploit tries to call home, you get a warning and *only then*. So you take warnings more seriously as they come up rarely.

Behavioural analysis is the way forward, along with cloud capability and better UIs to inform users - they are getting into a lot of technology they don't understand and need their hands holding.

Bret

Comment by bretti_kivi posted on Virus and Malware at 23/01/2011 - 16:38

bretti_kivi
Google has an archive, unfortunately, which can mean lots of editing for forum owners and administrators (been there, done that, bought the t-shirt).

However, lots of things *are* possible....

I would definitely advise caution as far as allegations on-line are concerned - the courts are slowly catching up to the idea that stuff that happens online may represent real life.

Bret

Comment by bretti_kivi posted on Am I a Terrorist? Section 44 and the powers to be! at 22/01/2011 - 15:03

bretti_kivi
they have abused their powers and acted illegally. See

Quote:
In an oral statement, May says that police officers will not be able to use Section 44 stop-and-search powers on individuals. However, Section 44 will remain available to police officers wishing to search vehicles.
Source: http://www.bjp-online.com/british-journal-of-photography/news/1721519/section-44...

Talk to the BJP, maybe? Newspapers?

Bret

Comment by bretti_kivi posted on Am I a Terrorist? Section 44 and the powers to be! at 22/01/2011 - 09:10

bretti_kivi
in that case the cards are only just up to spec.... wow. So that would also imply 256MB of cache. Fair enough.

Bret

Comment by bretti_kivi posted on K-5 SDHC write speeds at 21/01/2011 - 22:54

bretti_kivi
the cards are faster than rated. The C10 seems to hit around 20MB/s. From this (with a bit of spreadsheet work) it would appear that there is around 500MB of buffer cache in the K5 (assuming DNG sizes of 22.5MB).

Not too shabby....

Bret

Comment by bretti_kivi posted on K-5 SDHC write speeds at 21/01/2011 - 22:08

bretti_kivi
I just counted my views on 23hq and, like you, I find it strange what people like and will view. Still, a total of nearly 15k views on the top 25 isn't too shabby... but I have in excess of 5k pics on there in the mean time .

Bret

Comment by bretti_kivi posted on Funny old flickr at 21/01/2011 - 21:43

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