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11-10-2007, 07:07 AM   #1
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whats the deal with the Shake reduction

I know my K100D Super has shake reduction, but does it do anything at all??

i think it does jack all. i've pretty steady hands and my elbows are pressed right up against my body, even when i lean against a wall photos can still come out shaky

what the hell is the Shake Reduction function even doing? is my camera broken or something?

heres a few samples, the first taken in indoors low light at 50mm, and second outdoor nighttime at 200mm. maybe .5s shutter time nothing too long






how much does the Shake Reduction actually reduce camera shake?

i'm getting a tripod soon, but when going on a trip you just can't bring a tripod along

cheers

11-10-2007, 07:10 AM   #2
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I'm still trying to figure that one out.
11-10-2007, 07:20 AM   #3
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Shake reduction does work. One (in)famous test placed a camera on a running lawn mower, and took shots with and without shake reduction, clearly showing that it works.

My problem with it, and this might apply to your first shot, is that there is no way to tell if the SR system over-compensates for shake, thus inducing its own blur. Without knowing exactly what and how much it is working, I just leave mine off.

For your second shot, you might be expecting miracles. That is a lot of shake, far more than is within the SR tolerance.
11-10-2007, 07:33 AM   #4
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see the photo of a blue jay in the following post under my name.

1/30 of a second with a 300 mm lens. don't tell me shake reduction does nothing. is it perfect, no see the chikadee, forzen with flash, but it is not bad

https://www.pentaxforums.com/forums/general-pentax-photography/13308-do-you-a...tly-blurr.html

11-10-2007, 07:34 AM   #5
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It works. I don't know what happened in your first shot but the second shot 1/2 a second is wayyyyy beyond the capacity of the camera to compensate for. S/R is good for 2 to 4 stops no more than that.
Here is a recent shot of mine with a 135mm lens that I slowed down to 1/40th of a second to catch stick and arm blur. I've got steady hands but not this steady!


NaCl(that's about 2 and one half stops better than I can do unaided)H2O
11-10-2007, 07:53 AM   #6
baw
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QuoteQuote:
what the hell is the Shake Reduction function even doing? is my camera broken or something?

heres a few samples, the first taken in indoors low light at 50mm, and second outdoor nighttime at 200mm. maybe .5s shutter time nothing too long
EXIF shows 45 mm !! and 67 mm equ. Shutter 1.5s.

Not sure if you're serious. Do you really expect your camera to handle this?
11-10-2007, 08:01 AM   #7
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The rule of thumb is that without SR you can hand-hold a shot for the reciprocal of the focal length, so 1/50 for a 50mm lens, 1/200 for a 200mm lens, etc. Converted to the equivalent focal length on digital it is more like 1/75 for a 50mm lens or 1/300 for a 200mm lens.

SR will allow you shoot about 2 stops faster (i.e. 1/4 the shutter speed), which becomes about 1/20 for a 50mm lens and 1/75 for a 200mm lens.

1/2 is way beyond what anyone can hand-hold. I've had a few good shots at 1/8, when I've been sitting and bracing my arms, but that's about it.
11-10-2007, 08:32 AM   #8
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How do you get exif data of a web hosted image? ch

11-10-2007, 09:57 AM   #9
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Hi Crescent City

Re your question:
"How do you get exif data of a web hosted image" ? ch

It's called 'Black Magic' ! Have a look at the following links......see, it's fairly easy when you know HOW !!!

https://addons.mozilla.org/en-US/firefox/addon/3905

:: kiwi's digital experiment ::

Exif viewer : Opanda IExif - Professional EXIF / GPS / IPTC Viewer & Editor in Windows, IE & Firefox

ExifTool by Phil Harvey

https://www.pentaxforums.com/forums/pentax-dslr-discussion/2019-liney-ferrets...viewer+firefox

Best regards
Richard
11-10-2007, 10:01 AM   #10
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QuoteOriginally posted by Crescent City Quote
How do you get exif data of a web hosted image? ch
If whatever was used to scale the image leaves exif intact, you can look at it. I'm using opera, and I just right click it and select properties. The exif info is there.
11-10-2007, 10:20 AM   #11
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Hi Lordson

Studying the EXIF data in that night shot as 'baw' did, reveals a lengthy exposure time of 1.5 seconds. Sorry sunshine, but SR is simply incapable of dealing with this situation ! In that particular scenario, either a decent tripod or a 'bean-bag' is the only realistic answer. Bear in mind that Shake Reduction is an 'aid' to keeping an image sharper than it would be otherwise, but it's not a miracle cure !!

Best regards
Richard
11-10-2007, 10:52 AM   #12
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Couldn't do without Shake reduction, try taking a shot on top of a mountain & strong winds without it !!

simon
11-10-2007, 11:50 AM   #13
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The shake reduction works very well...Infact it is a very noticeable difference..Now I only use short lenses on my K110D and all the long stuff on my other bodies...
11-10-2007, 02:30 PM   #14
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QuoteOriginally posted by lordson Quote
what the hell is the Shake Reduction function even doing? is my camera broken or something?
Well Pentax quote 3-4 stops slower than the reciprocal of the lenses FL and most K10D owners I know have achieved that. What did you expect of the equipment beyond the published specifications?
11-10-2007, 03:32 PM   #15
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For longer exposure photographs they make something called a Tripod
Actually if you don't have a tripod you can also use a jacket or bean bag on a table or something.

If you use a tripod or bean bag turn the SR off. It can cause the camera to shake enough to ruin the picture when it's absolutely still.
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