| Moderated by: chrisbet, | Page:   1 2 3 4 5 6 7 8   |
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| Tidal Estuary Photography Project for Inshore Rescue - Page 5 | |
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| Posted: Sun Apr 7th, 2019 07:41 |
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41st Post |
chrisbet
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Low to High tide is just over 6 hours and the first hour after low and before high is considered "dead water" so the noticeable movement is 4 hours long. As a boat owner in the Thames estuary, I am well familiar with the issue of people being cut off by the tide which races in behind you if you are unaware of the nature of the mudflats. We even have an RNLI hovercraft to deal with the problem! 
____________________ If it is broken it was probably me .... |
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| Posted: Sun Apr 7th, 2019 10:14 |
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42nd Post |
jk
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jk wrote:Robert, Correction of my post above after reading Chris' post. High tide to high tide is 12 hours. High to low is only 6 hours. Therefore for best capture you need low frame rate 0-1 hr after High tide (HW) as rate of change is low, then 2-5hrs after HW up frame rate to match increased change of tidal flow/rise. 5-6hrs after HW and one hour before low water change frame rate back down to similar to first hour after high water. Chris are you familiar with the mud flats and creeks at Malden? Equally treacherous.
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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| Posted: Sun Apr 7th, 2019 11:07 |
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43rd Post |
Robert
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Spent two weeks on the Thames from Chertsey to Letchlade and back, great fun, until my father hit the low bridge at Oxford, demolished the cabin windscreen, then we realised why it folded flat!  It must have happened before, we just glued it back together, nobody noticed.I do want the flooding of the marginal areas, yesterday it just covered the grassy margins, I want to get the next extreme tide and that should show the extent of the tidal coverage. Need more practice with video (time-lapse), now I have a capable camera.
____________________ Robert. |
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| Posted: Sun Apr 7th, 2019 11:48 |
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44th Post |
chrisbet
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Lol - yes, I know most of the Essex coastline and the Thames up to Lechlade. Never hit a bridge though
____________________ If it is broken it was probably me .... |
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| Posted: Sun Apr 7th, 2019 12:10 |
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45th Post |
jk
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Robert wrote:
What menu item is that? Since I almost never do video I have never used it.
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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| Posted: Sun Apr 7th, 2019 12:29 |
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46th Post |
Robert
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Last but one item in the Shooting Menu. It greys out easily, it won't activate without a lens or if bracketing is selected, I am sure there will be other incompatible settings which will grey out the option, those are just the ones I have run up against. I understand the D850 is even better with additional options and a 'Holy Grail' setting option which allows a much wider exposure range to allow time-lapse to be made from bright daylight through to dark night conditions without user intervention.
____________________ Robert. |
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| Posted: Sun Apr 7th, 2019 13:48 |
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47th Post |
jk
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Thanks. I will take a look.
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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| Posted: Sun Apr 7th, 2019 13:57 |
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48th Post |
Robert
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The time-lapse feature was one of the many reasons I went for the D800, despite it's high pixel count, while useful at times, I don't really need the high resolution day to day.
____________________ Robert. |
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| Posted: Sun Apr 7th, 2019 14:04 |
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49th Post |
jk
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I find the D800 is a great camera that is perfectly balanced between the 24MP of my D600 and the 45MP of the D850/Z7. It works well for me.
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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| Posted: Sun Apr 7th, 2019 14:09 |
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50th Post |
Robert
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I think the thing about the D800 which I most like is the pliability and range of the NEF's, the amazing detail I can find in the shadows and to a lesser extent in the highlights.
____________________ Robert. |
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