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Cameras, Lenses and Accessories: Discuss long exposure filters...Hi guys, I'm looking for long exposure filters. In google there was a thread that there is available filter called ...
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Old 01-11-2008, 01:45   #1 (permalink)
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long exposure filters

Hi guys,

I'm looking for long exposure filters.
In google there was a thread that there is available filter called
Hoya ND x 400 2.7 multicoated glass filter. He said that it's stops down by 9 stops
Hoya | 77 mm Neutral Density x400 (ND) 2.7 Hoya | 018120 | B&H
Could be good experimenting, but unfortunately can't find this filter in UK shops. maximum what could find was this one
HOYA PRO-1 Digital ND8 Filter - 77mm | ONLY 56.90 inc Vat @ PicStop UK
but it's stopping 3 stops. Is there anything that could get shutter even slower? At the moment I have Cockin p series holder and some grads.

Cheers
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Old 01-11-2008, 02:09   #2 (permalink)
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Re: long exposure filters

I think that the most you can get from a single filter is 4 stops, but you can combine (say) a two and a three if you don't mind stacking them.

You will probably find the one you think is 9 stops is actually point 9 (.9) which is three stops. A four stop one will be 1.2.

Onestop digital don't seem to stock ND's, but I found good prices on e-bay from a UK supplier, but I'm at work at the moment and can't access e-bay on our system, so I'll have to check for you tomorrow when I get home - on nights at the moment.

SRB Gitram's own brand square P size ND's and grads are very good and are 12.50 each, or a bit less for a set of four.
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Old 01-11-2008, 02:23   #3 (permalink)
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Re: long exposure filters

Cheers Graham,
still looking around. Saved some money and looking to upgrade existing filters. By the way I noticed when I stack them ( I have ND grads ) they tend to give weird purple cast on pictures. Does it matters that I use cloudy or daylight settings on camera. Somebody said to use auto
And would grads stacking affect sharpness of image, some guys saying to use single ones as u go more your DOF and focus reduces considerably. But in my case I want to get as slow as possible. to achieve those clouds in sky float
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Old 01-11-2008, 09:23   #4 (permalink)
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Re: long exposure filters

Here is the place I was talking about. I think if you order from the shop direct the price incudes P&P. There is a Hoya ND8 77mm for 41, and Cokin P size are 14. They have an e-bay shop too, but there are P&P charges in the e-bay shop although the prices are a bit cheaper. You have to weigh up which route works best.

SRB own-brand P size filters are 12.50 and are actually Hitech filters.

When I've used ND's (not stacked) I've always left the WB on auto. I Googled colour cast on Cokin filters when I was buying mine and found that there is a lot of stuff on the net about colour casts with Cokin filters, that's why I did not buy them. It would appear that it might be that their quality control is done on a batch basis rather than individual, so some may be OK and others might have a cast. I guess that is why they are much cheaper than (for instance) Lee filters.

Hitech seemed to get good press generally, and SRB would not touch them if they were no good. having said that, I don't know if Hitech, or any other makers use batch QC.
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Old 01-11-2008, 10:27   #5 (permalink)
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Re: long exposure filters

Had a look and decided to go spend little more and not to buy Cockin, Looking now on your segested Hitech or invest maybe more and go for Heliopan Just a bit confusion, if I buy Heliopan filters, will they fit in P series holder?
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Old 01-11-2008, 10:40   #6 (permalink)
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Re: long exposure filters

By the way, got on Heliopan web and seems like they are producing even ND4 filters which get your exposure down by 13 stops Tried to find where to buy those ones, but seems nothing is coming up on old google, at least not in UK
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Old 01-11-2008, 10:49   #7 (permalink)
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Re: long exposure filters

Herzlich willkommen bei Heliopan Lichtfilter-Technik!
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Old 01-11-2008, 13:17   #8 (permalink)
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Re: long exposure filters

B&W do ND filters up to 10 stops you can get them from Robert White and Warehouse express as well as Ebay. Cokin will give a slight cast with their ND filters but it's easy to correct. I am not sure if the Heliopan will fit in the P series holder. Square filters tend to be 100mm which is the Cokin Z series I think.
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Old 01-11-2008, 13:22   #9 (permalink)
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Re: long exposure filters

Quote:
Originally Posted by VinnyP View Post
B&W do ND filters up to 10 stops you can get them from Robert White and Warehouse express as well as Ebay. Cokin will give a slight cast with their ND filters but it's easy to correct. I am not sure if the Heliopan will fit in the P series holder. Square filters tend to be 100mm which is the Cokin Z series I think.
Thanks for that Vinny - you learn something every day
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Old 01-11-2008, 13:40   #10 (permalink)
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Re: long exposure filters

more I dig more confused I get,
I just got suggestion to look at Singh-Ray filters, but ohh the price. And then simple question, is this worth it? Potently of course I would go for B+W, but what I love about Singh- Ray is that Van-N-Duo has ND + Circular polariser all in one and top of that I can attach my Cockin P holder with extra stuff, but $390......
Lokked at B+W circulars, hmm 150 for 77mm one. Maybe I could go with Singh-Ray, and of course I'm investing in long future.
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Old 01-11-2008, 15:40   #11 (permalink)
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Re: long exposure filters

I've been using Cokins (P series) for a few years and the colour cast is a real pain. Especially if you want to really slow down your exposure by stacking. I'd come back from trips where my mate was using Lee's and I was using Cokins and the difference in our images is scarey!

Here's a comparison. Remember this was taken on the exact same night. (I will admit though that this is an extreme example)

Lee:
Elgol Sunset

Cokin:
Verdant Vista

I recently got myself a set of Lee's. While they are horribly expensive (250 for 3 nd grads, 2 lens adaptors and filter holder) the difference is simply stunning. I can stack 3 of them no problem and get no colour cast. The nd grad kit comes with a 0.3, 0.6 & a 0.9.

I searched about quite a bit for best prices and plumped for Teamwork Digital Ltd, Suppliers of Professional Digital and Large Format Photographic Equipment


At the end of the day, you get what you pay for. Certainly wish I never wasted my money on the Cokins. Then again, funds where tight

p.s. this is my first, and so far only outing with my new Lee's... but instantly the difference was apparent.
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Old 01-11-2008, 17:18   #12 (permalink)
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Re: long exposure filters

Yep I had same problems.
Waiting for answer from Singh-Ray, asked them where I could by them in UK market. Was searching in google for few hours, but no luck with shopping. If I will not get price quote then I will go for Lee or B+W.
Nice shot of Old pier.
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