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Thread started 19 Sep 2013 (Thursday) 20:10
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Help with Lee Big Stopper...

 
timberlandlh
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Oct 16, 2013 19:21 |  #31

Thank You Alex.... I *thought* I had it right by centering. Then again, usually by "thinking" I tend to over engineer it. I shot a few captures of the kitchen sink with water over a plate....not nearly as dramatic as hiking back 2 miles to a waterfall and setting up my gear...but hey!...it worked, lol.

Sometime next week I'll post a few from our cabin in the Great Smoky Mountain National Park :)


Canon S100 and Canon 7D, Canon 28-300L 3.5/5.6 IS, Canon 70-200L 2.8 non IS, Canon 10-22 I'll give it a lil "l", Canon 50 1.8, LEE 10X Filter, Benro Travel Angel A-169....REI back pack, hiking boots and a photogenic black labrador

  
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lehmanncpa
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Oct 16, 2013 21:13 |  #32

No worries. Enjoy. We just returned from our cabin in Western NC near the TN border. We have a place off the Blue Ridge Parkway in West Jefferson, NC, near Boone. I hope the weather is better for you than it was for us. It rained and was miserable all week. The government shutdown didn't help as all the parks along the Blue Ridge Parkway were closed. The park rangers were still stopping anyone going above the speed limit of 45mph along the Parkway though.

I hope the parks re-open by then - it looks like they may. Ya'll have fun, now.


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timberlandlh
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Oct 17, 2013 09:13 |  #33

lehmanncpa wrote in post #16376914 (external link)
......The park rangers were still stopping anyone going above the speed limit of 45mph along the Parkway though....

As I say, they have become an Income Generating Unit vs a Protect and Serve Unit...sad.

On a plus....the Park is now open and our weather is supposed to be dry next week. Fall color reports I've seen from my east TN friends on FB are near perfect.... We will have to meet up sometime down that way. We're usually down every 6 weeks or so, for long weekends.


Canon S100 and Canon 7D, Canon 28-300L 3.5/5.6 IS, Canon 70-200L 2.8 non IS, Canon 10-22 I'll give it a lil "l", Canon 50 1.8, LEE 10X Filter, Benro Travel Angel A-169....REI back pack, hiking boots and a photogenic black labrador

  
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LeeRatters
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Oct 25, 2013 04:13 |  #34

Yuk!! No need for all that maths!!! :lol:


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Tdragone
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Nov 21, 2013 01:32 |  #35

Guys; there's a cheat sheet on Singh Ray's website for both 10 and 15 stop filters. I saw this on another post about the new 15 stop Singh Ray filter:
http://www.singh-ray.com/mor-slo15.html (external link)


-Tom Dragonetti
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parfilator
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Nov 21, 2013 10:47 as a reply to  @ Tdragone's post |  #36

Instead of all the math, I've found with my 10 stop Hitek that for a sunny day at iso 100 and f16, an exposure of 60 - 90 seconds produces a reasonable image. I then just adjust my exposure time from that first image longer or shorter after reviewing the first shot. Very easy and no math pain!

Good tips on the view finder cover. I was getting some weird exposure leakage now and then and was thnking it was the seal between the filter and the holder but maybe it is the fact I wasn't using a cover during exposure?


Canon 5D II|EOS M w/22mm f2.0| 50mm f1.4 |17-40mm f4 L| 70-200 mm f4 L| 100 mm f2.8L Macro | 24-70 mm f2.8LII |Yongnuo YN568EX|YN622c|Flickr (external link)

  
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lehmanncpa
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Nov 21, 2013 11:00 |  #37

parfilator wrote in post #16469370 (external link)
Instead of all the math, I've found with my 10 stop Hitek that for a sunny day at iso 100 and f16, an exposure of 60 - 90 seconds produces a reasonable image. I then just adjust my exposure time from that first image longer or shorter after reviewing the first shot. Very easy and no math pain!

That seems like too long an exposure time to me, but I'll give it a go. Sunny 16 rule is ISO 100 at f/16, you should get a shutter speed of 1/100. Therefore, decreasing the shutter speed by 10 stops would give you a shutter speed of about 10 seconds. It seems to me that 60-90 seconds would overexpose your image by at least 2 or 3 full stops. Are you using a CPL together with your ND filter?


Alex
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parfilator
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Nov 21, 2013 11:14 |  #38

lehmanncpa wrote in post #16469396 (external link)
That seems like too long an exposure time to me, but I'll give it a go. Sunny 16 rule is ISO 100 at f/16, you should get a shutter speed of 1/100. Therefore, decreasing the shutter speed by 10 stops would give you a shutter speed of about 10 seconds. It seems to me that 60-90 seconds would overexpose your image by at least 2 or 3 full stops. Are you using a CPL together with your ND filter?

I'll say that's rough depending on the scene shaded/filtered light but my point is that you can take a guess and then adjust. You will probably find that after you do all the math you will still have to modify your exposure.


Canon 5D II|EOS M w/22mm f2.0| 50mm f1.4 |17-40mm f4 L| 70-200 mm f4 L| 100 mm f2.8L Macro | 24-70 mm f2.8LII |Yongnuo YN568EX|YN622c|Flickr (external link)

  
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lehmanncpa
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Nov 21, 2013 11:18 |  #39

parfilator wrote in post #16469435 (external link)
...but my point is that you can take a guess and then adjust. You will probably find that after you do all the math you will still have to modify your exposure.

I'll agree with that. I typically bracket my long exposures by at least 1 stop as a matter of habit. The problem with long exposures is that 1-stop can sometimes mean an additional two or three minutes of just sitting and waiting there. :D


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Help with Lee Big Stopper...
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