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 Replies: 11 / Views: 1,853 |
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Bedrock of the Community
United States
10045 Posts |
My Nikon D810 has a 36mp sensor, and I'm testing how much more detail I can resolve over my old 10mp Canon. The date area on this 1900/1890 Peru 1/2 Dinero coin is only about 4mm across--so it makes a good resolution test. Here is a shot on my old Canon at 100% crop. Not bad for such a tiny date using a 10mp sensor.  I just shot this on my D810 with the Nikkor 105mm micro @ f11--the sharpest tested aperture. It was shot on flat picture control and Mup and EFSC. It looks like a microscope shot, and I appreciate how well the highlights are managed on a bright AU silver coin! Clearly, it's a huge improvement! Once I get a copy stand, dial-in lighting and perhaps use tethered focus-stacking, image detail might improve some more.   Edited by DVCollector
08/19/2014 10:27 pm
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Pillar of the Community
 United States
4038 Posts |
Wow, really nice. What was the magnification?
Which Canon camera, the XS?
What lens on the Canon, and what magnification?
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Valued Member
United States
88 Posts |
Great pics, I really need to upgrade from my iphone.  |
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Pillar of the Community
United States
1132 Posts |
I started to scroll-zoom on the image...And kept scrolling, and scrolling, and...you get the picture. Nice resolution! I do astrophotography on nebulae and galaxies & I bet you could split a double star system with that camera from 1000 light years. Very nice!
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Bedrock of the Community
 United States
10045 Posts |
Thanks! Both images were shot at the highest possible magnification. For the Nikon D810, that means ~1:1 using the Nikkor 105micro.
The first image was taken with a Canon Powershot SD790IS (hand-held); I posted 100% crop.
Edited by DVCollector
08/19/2014 11:50 pm
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Pillar of the Community
United States
4038 Posts |
It looks like Nikon has a winner! They seem to have finally emphasized pixel-level detail but didn't give up their traditional fine tonal contrast. This shot alone has me leaning more toward the D810. I do need to make sure it can integrate with Helicon stacking software...
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Bedrock of the Community
United States
10045 Posts |
Yeah--I'm pretty happy with what the D810 can do, and I think I've only scratched the surface. Quote:
I do need to make sure it can integrate with Helicon stacking software. I see that Helicon can process RAW images--that saves a step for me over Zerene Stacker, but it might not yet support the D810 RAW codec?  Edited by DVCollector
08/20/2014 12:12 am
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Pillar of the Community
United States
1132 Posts |
Have you tried Registax? Commonly used by astronomy nuts like myself, but the price is right for your experimentation... FREE!
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Pillar of the Community
2087 Posts |
Quote:
It looks like Nikon has a winner! Just a little tease for the nikon lovers: their great pictures ( thats serious) and show off how good the sony made sensors in nikon Cameras are. As far as I know Nikon still doesn't have the ability to make 35mm sensors Edited by austrokiwi
08/20/2014 01:31 am
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Bedrock of the Community
United States
10045 Posts |
Quote:
As far as I know Nikon still doesn't have the ability to make 35mm sensors That is very specialized technology--perhaps Nikon is happy to contract that out to Sony? From what I understand, many digital camera makers do not manufacture the sensors--Sony being one exception of course!  Edited by DVCollector
08/20/2014 02:03 am
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Valued Member
440 Posts |
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Bedrock of the Community
United States
10045 Posts |
Here's one more before/after on a Peru 1/2 Dinero 1901/1891. You can see how the first image is breaking up at 100% crop even with sharpening. The new image looks so much better at 100%. I like how you can see all the tool marks in the digits! The lens was slightly off-axis, but focus-stacking (7 images) and shooting the coin on a grid solves those issues. But once I get a copy stand, I'll dial-in things better and get a proper lighting setup established. This was just 1 Jansjo light w/diffusion. Shot on a Canon SD790IS  Shot on the D810 with a 105mm VR @f9--with diffusion, perhaps too much?  Edited by DVCollector
08/21/2014 01:30 am
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Replies: 11 / Views: 1,853 |
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Posted 08/19/2014 11:24 pm
