testing the water

[shed301]

ok having had my new k200d for a few weeks i tried doing some slow shutter effects... the first one was in full manual, using a 18-80 mm tokina lens, polarizing filter, shutter speed was about a second. I know there's some area's blown ( washed) out but if i had a faster shutter speed i prolly wouldn't have got the desired water effect. the question is... did i do right or did i screw it up completely?



the 2nd one.. well it's the same picture... i just went completely nuts in adobe lightroom and came out with this..lol



thanks

[Mike Cash]

Why did you shoot at ISO1600?

If you want to get your shutter speeds longer, drop the ISO as low as it will go.

[Taff]

These havent turned out the best

lowest iso, and use a tripod for sturdyness, keeping shutter speed as low as possible!!!
You actually dont need such a long shutter as one would imagine to get the soft water effect

[kerrowdown]

You may also need to use ND filters to get slow enough shutter speeds

[mithrandir]

I don't know if the K200D has the same capabilities as the K10D, but with the K10D you can take a multiple exposure (9 shots) which can give great water effects without too much worry with ND filters and exposure settings. You might want to try this (with a tripod of course) if the K200D supports multiple exposures.

[shed301]

Mike and Taff
i did shoot it at 1600 actually and i did it because i thought the lower you go in shutter speed, the higher you go in ISO. Obvousily i was wrong


Taff you think i could get away with maybe a higher shutterspeed like around the 4 sec and maybe ISO 400?. i was using a polerising filter and it was a overcast day and it was setup on a tripod, infared remote control etc

I'll have another crack at it today with your guys advice and see what happens

much appreciated and will let you know how it turns out

cheers
Grant

[Mike Cash]

If you're getting a 1 second exposure at ISO1600 (nevermind that it was overexposed for the moment), then this is what would happen with changing the ISO:

800 = 2 seconds
400 = 4 seconds
200 = 8 seconds
100 = 16 seconds

[JonPB]

There are three elements to exposure: shutter speed, lens aperture, and capture sensitivity. These three add up to how bright the image is. Longer shutter speeds let in more light, making for a brighter image. Wider apertures (represented by lower f/ numbers) let in more light, too. Higher ISOs increase the amount of brightness for a given amount of light. So, if you want to lengthen the shutter speed (presenting the sensor with more light) while not affecting the overall exposure level, you need to stop-down the aperture (to a higher f/ number) (this decreases how much light can flow through the lens) and/or decrease the ISO (decreasing how much the sensor responds to light).

Another way to look at it is that the following three things will make the image brighter: longer shutter speed, wider (lower) aperture, higher ISO. The following three things will make the image darker: faster shutter speed, smaller (higher-numbered) aperture, lower ISO. So if you lengthen the shutter speed, the image will be brighter unless you compensate by darkening the image with a smaller aperture or lower ISO.

Don't worry--this stuff isn't intuitive. But learning it will help you use your camera better. Cheers!

[Clicker]

You may also want to explore the "Sv" (sensitivity) mode, where you select the ISO and the Pentax will sort out the speed and aperture.

[shed301]

ok went out for *take two* and with a smile on my face these are the results



and this one



much better and more pleasing result

thanks to all that offered assistance with my problem. greatly appreciated, Now just got to wait for the *understanding exposure* book to arrive into new zealand

[ghost]

looks like a great learning experiance!!! keep the pictures coming

[Taff]

muchbetter mate, these look gr8

[pingflood]

shed301: I hope you don't mind me tweaking one of your shots a little. I think it was too blue and maybe I went overboard, but here goes.

[shed301]

wow your right ping. it did look blue.... maybe have the WB off a little . what program did you use to correct it coz it looks bloody awesome

[nupentaxian]

Ping i think u went a lil overboard...water looks purplish...