Anyone with a D3 and ND10 filter?

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Cheng

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With most ND10 filters, you get colour casts due to them not properly blocking IR which causes colour casts. According to THIS REVIEW, the IR response is very poor. Just wondering if this would mean there would be no colour casts even during long exposures with a ND10?
 
I think the colour cast problem with some of them is simply because they are not neutral in the visible spectrum. The so-called IR problems that I have heard about from HiTech and SinghRay are I think a combination of poor neutrality and when used on a few cameras with less efficient IR filters over the sensor (eg Nikon CCD sensor in the now discontinued Nikon D70, D40, D40, I think???) there was a gap in the filtering of the two which, in combination, gave a red cast with some semi-IR creeping through. Light leaks with the HiTech also. Not receommended.

I've not been able to get to the bottom of that but it doesn't matter as there are now several good 10-stop filters about that all work well with no IR coming through.

Best known is the 10-stop B+W 110. It is an uncoated screw fit. £80 in 77mm. It is very slightly warm.

Similar is the LCW 9-stopper which is multi-coated glass and comes in 77mm only. A bit cheaper too. Looks very promising. I'm told it is a fraction blue.

LCW also do a 2-8 stops fader, using two counter-rotating polarising filters to produce the effect. Could be the pick of the bunch - about £80 in 77mm. I have one on order. LCW stuff comes from Premier-Ink - see their website. This one looks neutral.

Then there is the Hoya X400 nine stopper, coated, also a tiny bit warm, expensive, and special order only.

Finally, there is the only square jobbie for Lee systems - the Big Stopper. It's ten stops and a fraction blue, uncoated glass. It has a neat light seal around the sides. £100 in 100mm-sq only.

Pretty much all of these have supply problems at the moment, especially if you want 77mm, which should be resolved in the next week or two.
 
Email from Hitech/Formatt's CS:

Infra Red pollution can occur when using a 10 stop ND filter. This is
especially so when the camera has a CMOS sensor. If your camera has this,
then you will experience the problem. This should however not be a problem
when using a 4 stop ND.
Click to expand...

So problems it seems especially with CMOS sensors but not the D70/D200 as they were CCD. I've come across forum posts where the effects were essentially not an issue as they didn't manifest on CCDs.

So I'm interested in people with D3's and 10 stop NDs and there certainly seems to be a different response depending on camera. Thanks for the options you have suggested, but none except the big stopper seem to appeal, and with that there still comes a problem. I'm trying to get a Sigma 12-24 to accept a filter, which will involve some DIY. It has no filter threads! I do make life hard for myself...:D
 
Cheng said:
Email from Hitech/Formatt's CS:



So problems it seems especially with CMOS sensors but not the D70/D200 as they were CCD. I've come across forum posts where the effects were essentially not an issue as they didn't manifest on CCDs.

So I'm interested in people with D3's and 10 stop NDs and there certainly seems to be a different response depending on camera. Thanks for the options you have suggested, but none except the big stopper seem to appeal, and with that there still comes a problem. I'm trying to get a Sigma 12-24 to accept a filter, which will involve some DIY. It has no filter threads! I do make life hard for myself...:D
Click to expand...

You could maybe try rear mounting the filter? See this thread http://www.talkphotography.co.uk/forums/showthread.php?t=213731

I'm confused by that statement from HiTech. TBH I don't think it's a sensor problem as such, more to do with the IR filtering over the sensor. And anyway, I don't think any current DSLRs use a CCD.

I've tried most ND filters on my Canon 5D2 (CMOS) including the Lee. No IR problems. It's a red herring (haha!).
 
I think that rear loading may be a little be impractical in the field...and end up with me dropping the 12-24 in the stream...haha! That's interesting you don't have any IR problems They usually manifest with longer exposures, probably 30+ seconds at a guess. I've got an ingenius plan to attach/destroy some filters to the 12-24...probably within the next 2 weeks! Will post details if it manages to work! I think I am willing to risk a colour cast with hitech filters...wispy clouds and milky water vs. a small tinge...should be worth the £25 outlay!
 
I don't know if this helps but I have a b+w nd 110 on a d700 and I don't get any colour cast. I noticed it is more a 10.5-11 stops than a 10 stops but I don't mind that.
 
I find I get a colour cast sometimes with my D3 and B&W 10 stop. I usually take a photo of the scene without the filter as well so I know how to process it back to looking how it should.
 
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