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| My new D800... - Page 3 | |
| Well fairly new. | Rate Topic |
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| Posted: Sun Dec 30th, 2018 07:22 |
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21st Post |
Robert
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Done! Excellent, thanks. 
____________________ Robert. |
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| Posted: Wed Jan 2nd, 2019 06:24 |
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22nd Post |
Robert
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They say you have to be careful what you wish for... One of the things I had hoped for with the D800 was increased sensitivity and greater detail, with an absence of banding and excessive heat generated noise, for my astro photography. Last night after a very large New Years roast Dinner with the family, as the tribe drove away, Christopher suggested we take advantage of a clear Moonless sky and take the new D800 out. I leaped at the chance, grabbing my heaviest tripod, the D800 and the 16mm fisheye, we braved the icy roads and headed for the hills. It was bitterly cold but quickly setting up and returning to the car for a couple of mince pies and a sip of coffee from the flask kept the seasonal theme. About 25 minutes later I judged I would have enough for a stack, about 40, 20 second exposures with 20 second intervals at f/4, ISO 3200. All saved as NEF's. My intended use is to stack them to intensify the stars. I then took a further 50, 30 second exposures @ f/5.6 for star trails. I have processed these files and created the final star trail image. This is where the superb definition of the D800 becomes a problem... It can define so many stars, so clearly that the sky is filled with trails. The individual stars are very clear, well defined and sharp, previously with other cameras the stars were just an indistinct blob of light, with the D800 even with the Nikkor 16mm f/2.8 fisheye lens each and every star is clear and very distinct, OK there was CA but Lightroom dealt with that perfectly, CA gone. Taken at Stickle Pike, in the Lake District; Orion bottom right, Ursa Major, top left, the Milky Way is central, top to bottom. Attachment: Stickle StarTrails 2019.jpg (Downloaded 24 times)
____________________ Robert. |
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| Posted: Wed Jan 2nd, 2019 08:10 |
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23rd Post |
Robert
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Curious to see how it works with the pre ai Nikkor 105mm f/2.5, I took this one of yesterdays dining table. I will never win prize for flower arranging! Wide open, ISO 400, LED room lighting/limited daylight, a bit wider than a quarter of the frame. Attachment: Dining table.jpg (Downloaded 23 times)
____________________ Robert. |
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| Posted: Wed Jan 2nd, 2019 16:07 |
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24th Post |
Robert
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Finally processed this one, 30 second exposures at f/5.6, ISO 3,500. 20 exposures taken with 10 second intervals, TIFF's, stacked with the median process in 'Starry Landscape Stacker'. The Eastern sky was too light polluted for a good image but it was a good test for the D800 in adverse conditions. First the entire image, second a close to 100% crop.  The crop with Orion featuring. 
____________________ Robert. |
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| Posted: Thu Jan 3rd, 2019 18:04 |
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25th Post |
Eric
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I suppose what surprises me (I know it shouldn't) is how the massive number of 'visible to the camera' stars tend to camouflage the 'visible to the eye' main constellations. I struggle to see Orion in the photos....have to close my eyes and squint to block out the 'star noise'  In other words the camera is working well. I admire your application and skill.  And who is to say whether it's extra Mp might be a cropping bonus if you were to do some bird photography even without big lenses? I am beginning to think that whilst a long lens is required when the bird is distant, trying to fill the frame when birds are closer may not be the be all and end all in representating the bird anyway. Keeping the bird in a larger setting may be more pleasing pictorially as well as more helpful technically. Or maybe that's some post rationalisation on my part .....because I can't get close enough to the little b8ggers at the best of the times. Glad the camera is delivering for you.
____________________ Eric |
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| Posted: Thu Jan 3rd, 2019 18:36 |
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26th Post |
Robert
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Thanks Eric, I am delighted, the last images are stacked to intensify the stars, in Starry Landscape Stacker, I think I might have more control in Ps with layers. The trouble is the dimmer stars have been intensified more than the brighter stars, I think? I will have a play with the source images, I think I have 44, 20 second exposures, it may be I would get sufficient intensification from fewer images, say 10? I think I used 20 for the above image and it's rather overdone it. I am probably trying harder than I need to and turning everything up to max and spoiling it a bit on the way. What I am really pleased about is the firm boundaries of the star shapes, just slightly oval, or slightly elongated circles from the 20 second exposure. I want to experiment with lower ISO, shorter exposure and stacking my own images in Ps. I am relieved the 16mm fisheye holds up with a 36Mp sensor. Many of the fainter stars in the Milky Way are only visible screen at 100% zoom and picking them out from noise is tricky, I am thinking there isn't too much noise even at 3,200 ISO and zero banding, even after at least an hour and a half of 20 and 30 second exposures. The last 30 second exposure was as clean as the first 20 second exposure. I am with you on the wider framing for birds, I might be persuaded to try a 1.4X converter on my old 300mm f/2.8 for closer birds. The magnification will be less so noise is less of an issue. Win - win.
____________________ Robert. |
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| Posted: Fri Jan 18th, 2019 18:30 |
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27th Post |
Robert
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Rather than cluttering up the animals thread with my ramblings, an image with the D800 and the 16mm f/2.8 Ai fisheye. On my way home from from pre-dawn star photography, I stopped at a viewpoint and grabbed some exposures of the Duddon estuary with Black Coombe behind. This is not cropped, about 9am, the nearby field in shadow, as shot SOOC the field was almost black, like the bottom left corner. Attachment: Screen Shot 2019-01-19 at 00.19.09.jpg (Downloaded 10 times)
____________________ Robert. |
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| Posted: Fri Jan 18th, 2019 18:33 |
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28th Post |
Robert
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This is a 100% crop you can see the crop area in the top left of the screen shot. Lower you can see the adjustments I made, first auto then backing that setting off by adjusting the white, black and shadow recovery off because it had rather over brightened the image. The waterline is about a mile away from the camera, bear in mind this is a 16mm fisheye, on FX. The lighthouse to the right, on the other side of the estuary is quite small, not much higher than 25 feet, it's about three miles from the camera. Attachment: Screen Shot 2019-01-19 at 00.22.31.jpg (Downloaded 10 times)
____________________ Robert. |
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| Posted: Sat Jan 19th, 2019 03:23 |
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29th Post |
jk
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Nice clear day. Brings out the best in lens and camera.
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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| Posted: Sat Jan 19th, 2019 03:55 |
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30th Post |
Robert
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Another but not such a nice day, and the reason why Black Combe is so called... Heavy rain and bright sunshine, almost dark. Difficult to capture and show the extremes. D3, 18-35mm f/3.5-4.5. Attachment: Screen Shot 2019-01-19 at 09.49.46.jpg (Downloaded 9 times)
____________________ Robert. |
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