I'm not sure if it's do-able or if it's currently down to computational power in bodies or whatever but instead of taking 3 seperate shots with the shutter closing each time couldn't 3 seperate exposures be computed from one shutter actuation. Follow me if you can & I'll keep the figures simple so you have the best chance of following me.


ie: you want a hdr image of 3 exposures you take one at -1 ev one normal & one +1 ev

lets say your -1 is a one second exposure, mid is 2 secs, & +1 is 4 secs. Is it not possible that instead of taking 3 exposures of 1,2 & 4 secs that you could take one 4 sec image & the camera could record 3 seperate exposures by "saving the data" at the 1 sec & 2 sec point without using the mechanical shutter. After all it is just recording a load of ones & zeros & should be able to work this out. Digital compacts have no mechanical shutter after all.

Now 4 secs is not going to help with movement but when you scale this to high shutter speeds you could freeze motion in HDR also. Surely it's just a matter of the right algorythm & enough computing power & speed to carry this off ?

Just an idea, do you think I need to patent it & get on Dragons Den ?

Well I've just sealed the box with nice FRAGILE tape which shouldn't draw attention to it !
Shame it's sealed or I could have included a fake bill of sale for £500 in case your missus opened it by mistake

Couldn't you have mooooooved the cow out of the way ?

Shame about the surroundings as it's a funky looking caravan indeed.

See if Johns guide will help link

Tamron 70-300mm now sold.

Apologies that I cannot tidy up the original post but editing is not allowed it seems.

Still available:

Pentax K20d (roughly 4500 shutter activations)
Pentax Da 18-55mm II f3.5-5.6
Pentax Da 14mm f2.8
Pentax FA 50mm f1.4
Sigma 30mm f1.4
Sigma 70-200mm f2.8 EX DG HSM II Macro

BARGAIN BIN: with prices to avoid evilbay

Pentax-m 50mm f1.7 with caps, couple of specs of dust inside but does not affect IQ
£15 including delivery

Super Paragon extension tubes - no contacts but does have aperture lever
£15 including delivery

LL-60 focus screen (includes case & tweezers)
£20 including delivery

Cheapo chinese split prism focus screen
Cheapo chinese 2 stage remote release with bulb lock-off
£6 each including delivery

You need to take away everything in the url after .jpg & put {img} {/img} before and after it only using square brackets

Classic crown shape in the last one. Very nice

17-70mm
DG 530 Super
10-17mm
2x Pz-AF TC

All sold pending payment.

Reverse adapter & 52-49mm step down ring sold & paid.

In broken-english negotiation over 70-200

Everything else still available & will be listed on ebay tomorrow evening if unsold.

It's a perfectly valid reason I think.
A noisy image has less detail initially due to being obscured by the noise.
Applying noise reduction further reduces the detail .

In capturing a cleaner initial image you retain more detail & can push the post processing further without suffering too much degradation.

It's the chroma (or colour) noise that bothers me, the luminance I can live with (although less is better).

Haha, suddenly everyones obsessed with the 10-17mm well that's been sold. I will miss it certainly, I'll just have to save for a full-frame fisheye. I'm not worried about the zoom aspect as I use it wide anyway.
I have taken a shot for the fortnightly competition with the 10-17mm so it's not forgotten.