Testing ND filters

08-13-2008, 11:21 PM

SPEEED

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Testing ND filters

I promised Cal I was gonna test these by the end of last week but I failed to meet the deadline...

Taken with a 10-22 + CPL + 2 stop ND Filter + 4 stop ND filter - all stacked on top of each other.

2.5 sec exposure @ f4 | ISO100 - taken midday with clear sunny skies

08-14-2008, 02:22 AM

SagiSRP

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that's a lot of nd filters.. but pic looks nice.. how'd you take it? tripod or someone drove your car?

08-14-2008, 02:27 AM

wongdood

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he's got a rig i believe...

some photographers stack up to 9 stops to get some magnificent color/saturation... or in his case a nice motion effect.

08-14-2008, 08:57 AM

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Quote:

Originally Posted by SagiSRP

that's a lot of nd filters.. but pic looks nice..

Thanks,

It was taken midday with sunny skies. Stacking so much light blocking was a must in order to get a 2.5 sec exposure @ 4 and above.

Quote:

Originally Posted by SagiSRP

how'd you take it? tripod or someone drove your car?

My rig - behind the scenes

08-14-2008, 09:31 AM

Defratos

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Wow, loving the rig set-up. Any risk of hitting the camera against another car?

08-14-2008, 10:32 AM

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Quote:

Originally Posted by Defratos

Wow, loving the rig set-up. Any risk of hitting the camera against another car?

LOL, there is a BIG risk. That thing hangs of the car like a monster crane. That's why you don't do it on public roads...

The shot above was taken in my driveway.

08-14-2008, 10:36 AM

CandlestickPark CandlestickPark is online now

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Very nice Daniel, your rig shots are sweet man. Just curious, how fast were you going? With a 2.5 second exposure I would have expected more blur in the background [but that's coming from someone whose never used a setup like this before].

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08-14-2008, 01:27 PM

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Quote:

Originally Posted by CandlestickPark

Thanks Marcus.

I was rolling down in Neutral in my driveway. Probably around 2-3mph at the most.

08-14-2008, 03:04 PM

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sick. I've been meaning to make a rig, but haven't had time.

I think with a couple Dent King dent pullers, some aluminum tubing, and my trusty welder I might could come up with something.

lol

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08-14-2008, 03:53 PM

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Quote:

Originally Posted by ibelonginprison

I think with a couple Dent King dent pullers, some aluminum tubing, and my trusty welder I might could come up with something.

lol

LOL, that's going to be one ghetto rig!

#11

08-15-2008, 05:07 PM

zx11pilot

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That's freakin' sweet man. That's quite the stack filters you got there too. Costs almost as much as a new lens

Pretty creative work on the rig too. Very nice set-up

#12

08-17-2008, 03:21 PM

infinus

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Is that pic cropped? because I get vignetting on my 10-22 when using a normal filter, what type of vignetting are you getting with that many stacked together at 10mm?

Also does anyone know how you calculate the effect when stacked? Is it multiplied or added?

I'm looking at the B+W #110 ND 3.0 which is a 10 stop filter for $100 would that be overkill or just right?

http://www.bhphotovideo.com/c/produc...0_Neutral.html

#13

08-17-2008, 03:54 PM

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Quote:

Originally Posted by infinus

The pic is not cropped, but it was taken @ 14mm. Yes, when stacking filter you should expect vignetting. I'm not sure about the formula though.

As for filters... Don't waste your money with BH. http://hvstar.net/ carries quality filters for a fraction of the cost. The only downside is that they are located in Hong Kong and it may take a week or two to get them, but unless you are in a big rush, I'd recommend going with them and saving some $$$.

#14

08-17-2008, 07:43 PM

DefJux921

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man... these rig shots are sweet

#15

08-17-2008, 08:09 PM

infinus

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Quote:

Originally Posted by SPEEED

They have some good prices but don't appear to have the 10 stop filters

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