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Old Nov 15, 2011, 8:00 PM   #1
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Default SX40 to the Cosmos...!

Crazy zoom test on Jupiter and the moon...
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Old Nov 15, 2011, 8:05 PM   #2
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Jupiter was taken at full optical and digital zoom,then cropped and a bit of selective dodging to bring up the brightness of its moons.
Taken at 1/4 sec,f/5.8,iso 100.
The Moon at full optical zoom,then cropped,slight levels tweak and removal of colour cast and a touch of sharpening.
1/100sec,f/5.8,iso 100.
Oh,and manual focusing on both- with tripod of course..!

Last edited by SIMON40; Nov 15, 2011 at 8:07 PM.
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Old Nov 21, 2011, 8:16 AM   #3
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Default Improve with 3 or 5 photos ?

I read today that the SX40 can take 3 (or 5) shots and then combine
them so as to take the
lowlights, mid tones, and highlights, from each exposure combine them
and get a better photo than by taking 1 shot.

This isn't the 'pick 1 of 5' choices but actual combining of multiple shots
which astronomers often use to get full , good , exposures of bright
objects with dim ones.

This is a really fabulous feature requiring, I should think, a stable platform
because picture elements have to line up.

The camera does this feature and I think it's great.

IF you are interested in this process PLEASE consider starting a thread
and I'll visit and try to contribute. I don't have to time , now, to start
and see how a thread on this topic would go.

but I have a lot of experience in optics and photometrics with lab
instrumentation. It woudl be nice to share it somewhere.
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Old Nov 21, 2011, 4:36 PM   #4
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Hi ALP- I am indeed aware of this process used in astro-photography- with superb results.
I am,however still struggling to find this feature on my SX40...
It has one specifically for low light to combine photos for a low noise image- but I'm not sure it has one for a high contrast scene- a HDR feature as it were,found on many cameras now. If it does please let me know where it is...! Thanks in advance...
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Old Jan 14, 2012, 11:47 PM   #5
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I'm sorry it's been so long that I've been away. I have yet to work with my SX40 for
that feature. I promise to come back here when / if I work with it.

I don't normally shoot astro photos.. but if the SX40 has the feature then any astro
photo sites will be talking about it. And here's some help:


When you go to a site like

www.abcded.com and want to look for , say, SX40 use google this way:

site:www.abcded.com sx40

What that will do is to force google to show you any page on that site (1) which
has SX40 on the page. The feature works great for much of the research I do.


(1) The only limitation is if a site purposefully disallows Google on to any of its pages.
It's very very rare for this to happen and in most cases Google gives better results
of what's on a site, using that method, than the site's own search function.

Try it.. let's hear the results. It's simple and you'll do it fast!
I hope you'll try it.
Andre
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Old Jan 17, 2012, 8:06 AM   #6
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there is option in scene-->night mode
that it will take 3 photos and merge it for better result.
other way to to go aparture/shutter priority mode -->func-->continuous shot mode --> you will find 2 option to take 3 photos on different exposure or different focus.It will take 3 photos which can be processed as HDR in photomatrix or cs5
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