Comments made by pgweber - Page 27

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I got one from Johnson's a few years ago. It was about £9 then.

Comment by pgweber posted on K5 cracked top ldc screen cover at 06/01/2014 - 19:36

Gamka wrote:

jules wrote:
Just got some batteries for my K3 from UK Battery (China!) and they must have strapped them to a snail to deliver them too but they did arrive and though they were stated as 2000 MAH, on arrival I notice they are rated at 2800 MAH! Time will tell!
You never know the original has been out a good while and tech moves on...

2800 Mega Amp Hour - they will certainly last. Might have trouble putting one in the camera though.

2800 mAh maybe ...

To be even more pedantic and with a point:

Hours are represented by an 'h'.

'H' is magnetic inductance whose unit is the Henry, which is in turn 1 Weber (a unit of magnetic flux) per Amp (Wb/A).

Therefore MA.H is the product of 1 million Amps and 1 Henry.

so multiplying out you get:

10^6 A x Wb/A which makes 10^6 Wb or a mega-Weber.

I'll settle for that!

Comment by pgweber posted on 3rd party battery - K5 at 02/01/2014 - 13:31

Hello David - I particularly like the last one with it's dramatic lighting from the sinking sun, the low viewpoint and the iconic bridge creeping into shot.

Comment by pgweber posted on A walk down Grey Srtreet at 12/12/2013 - 17:24

Well he was suggesting that the K3 might not measure up against the 7100, so he had to go!

Comment by pgweber posted on DXO K3 Scores are out at 26/11/2013 - 20:21

Smeggypants wrote:
I didn't use it either as it was annoying to wait 30 seconds before you could use thecamera again after taking a 30 second night shot.

Same here.

Smeggypants wrote:
I once made the mistake of doing a 40 minute bulb exposure and had to wait another 40 minutes - ARRRGHHHHH!!!

But how did the shot turn out?

Comment by pgweber posted on K-3 20 page review out at 21/11/2013 - 18:17

But what about if dark frame subtraction was applied, a la K10D?
i.e. when an exposure is repeated but without the shutter opening, so that no image is recorded on the sensor, just noise?

That would give a noise map.

Is it still available on the K5?

I never really used it on the K10.

Comment by pgweber posted on K-3 20 page review out at 20/11/2013 - 18:59

I have no problem with the SD card door on the K5, which I think was much improved over the K10.

Comment by pgweber posted on What will the new Pentax really offer us? at 19/10/2013 - 23:25

aliengrove wrote:
The sensor can detect frequencies from about 350nm to 1100nm; filters in a standard camera reduce this to a range from about 400nm to 700nm (the same as the human eye).

At the risk of being called a pedant, you have referred to 'wavelengths' which are related to the frequencies by the relationship:

c = f . lambda

where c = speed of light, f = frequency, lambda = wavelength.

Comment by pgweber posted on A decline in DSLR sales threatens camera companies at 16/10/2013 - 15:06

jules wrote:
http://www.flickr.com/photos/l-camera/sets/72157636201872393/

Check out this lot too!

The page linked-to is 'Private'

Comment by pgweber posted on New K3 image - interesting! at 05/10/2013 - 11:55

I only noticed on seeing the last posters' comment, so a belated 'well done' David.

Comment by pgweber posted on Magazine cover photo at 04/10/2013 - 16:40

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