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| Nikon D850 specifications - Page 12 | |
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| Posted: Sun Nov 19th, 2017 18:41 |
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111th Post |
jk
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I agree Eric but I think that 45MP may be overkill in some/many situations.
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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| Posted: Mon Nov 20th, 2017 09:06 |
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112th Post |
Eric
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jk wrote:I agree Eric but I think that 45MP may be overkill in some/many situations. That's true, the instances of needing full size 45mp files will be few and far between. I would just like to know if the procedures for Nikon downsampling to the M or S level result in files that are the same quality as cropping the full size file? ...and then.... I would love to know if the D500 files are inferior to cropped or downsampled D850 files? I am prepared to buy back into Nikon with a D850 but it's a large chunk of money that could be spent elsewhere, if the need for 45mp can be ignored...especially with the 1.5x advantage of DX. I am in the process of recouping funds by selling redundant technology and photo gear and hope to make a decision in January. I don't suppose you could send me some sample files? D500 v D850 v D850 downsampled to M and S. If you can, they would all need to be jpegs as I don't have the raw converters for D500 or D850 raw files. 
____________________ Eric |
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| Posted: Mon Nov 20th, 2017 09:52 |
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113th Post |
jk
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I think that a call to Nikon UK Tech Support from one of you living in the UK is the best way for us to get some of this information.
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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| Posted: Sat Dec 16th, 2017 04:19 |
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114th Post |
jk
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Focus stacking on the D850 https://nikonrumors.com/2017/12/14/nikon-d850-focus-stacking-tutorials.aspx/#more-117911 This one illustrates it simply. https://m.youtube.com/watch?v=hewQTjslhNw&feature=youtu.be
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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| Posted: Sat Dec 16th, 2017 07:23 |
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115th Post |
Robert
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Thanks JK, very interesting. This obviously uses the re-focus technique to achieve the differing images rather than shifting the camera slightly closer (or further away) to (or from) the subject. I'm not clear on the pro's and cons of the two techniques but I guess both can be made to work and provide artificially increased DoF. I have really only used it to bring particularly interesting parts of an image into focus by taking two or three exposures focused on the areas of interest and layering them in Ps, revealing the parts I want in the final image. Which is a lot of work. Not sure this feature of the D850 could achieve that sort of focus stacking... I am planning to start experimenting with indoor flower photography using extremely fast longish lenses, with minimal DoF but dreamy bokeh. I may have to resort to focus stacking to get the results I desire but will be very content to use the D3(S...) and do this manually. No doubt for those who enjoy the D850 it's another string in their bow. Not quite the spontaneous grab process I had expected but maybe accessible via a function button? Would need to be set up for a typical scenario I guess.
____________________ Robert. |
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| Posted: Sat Dec 16th, 2017 08:41 |
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116th Post |
jk
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Dont know enough of the why and wherefores of macro photography but thought I would post as a reference item for us.
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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| Posted: Sat Dec 16th, 2017 09:05 |
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117th Post |
Robert
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Well the focus, versus moving the entire camera and lens (or the subject) is to do with the lens. Some lenses achieve close focus by shortening the focal length. Notably the Nikkor Micro AF lenses. Although the perspective remains constant, the field of view changes but depending on how the image's are blended into one, that may not matter.
____________________ Robert. |
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| Posted: Sun Dec 17th, 2017 16:28 |
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118th Post |
Dave Groen
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Here's my initial attempt at focus stacking with my D850. This is the first focus point. The camera refocuses from the closest to the farthest distance. Attachment: FocusStacking2.jpg (Downloaded 12 times)
____________________ I started out with nothing and still have most of it left |
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| Posted: Sun Dec 17th, 2017 16:31 |
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119th Post |
Dave Groen
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This is the result after letting Photoshop assemble the images. There's a bit of jaggedness, but this is a worst-case scenario. The jaggedness wouldn't be nearly as noticeable in an image without all these straight lines. Attachment: FocusStacking1.jpg (Downloaded 12 times)
____________________ I started out with nothing and still have most of it left |
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| Posted: Sun Dec 17th, 2017 17:03 |
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120th Post |
jk
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Nice work Dave. The wooden rule probably doesnt allow best illustration as you say but it still works well. An engineer's metal rule would be better.
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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