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 Replies: 21 / Views: 4,958 |
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Pillar of the Community
 United States
1302 Posts |
 This was shot at ISO 100 using the Nikkor 105mm f/2.8G at f/3.5 at 1/2000. I'd really love to see an image of a proper light set up- bulbs in play, etc... because I think light really is the thing here.  same settings. Edited by cc99999
12/03/2013 4:30 pm
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Pillar of the Community
 United States
4038 Posts |
I'd still recommend a smaller aperture, as it seems your depth of field is suffering. I don't have experience with the D800, but my D7000 has a tendency to shake when in MUP mode. I highly recommend Live View rather than MUP as I've had better luck with the D7000 in LV and you can view live on screen for critical focusing using a tethering program. Camera Control Pro 2 is pretty expensive, but ControlMyNikon is cheap and actually more functional.
Contact me for photographic equipment or visit my home page at: http://macrocoins.com |
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Pillar of the Community
United States
1302 Posts |
I think most of my problems start here:  The two lights attached to the copy stand are too weak to project much light. I've tried replacing the bulbs but for some reason only these bulbs work on it. the small lights clipped onto the sides are led lights. all of these lights plus the ambient overhead light keeps things too warm. I know how to adjust white balance but i'd rather have things pre-shot work out better. any ideas of better light bulbs, lighting, etc would be put to use. *The white blank paper I use on the bottom of the stand is typically flat during production.* Edited by cc99999
12/04/2013 2:45 pm
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Pillar of the Community
2087 Posts |
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Moderator
United States
23522 Posts |
Sensor manufacturing is much like LCD manufacturing - few individual fabs, lots of customers. 80% of Sony's sensor production is for external customers.
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Pillar of the Community
United States
1302 Posts |
 So I haven't solved the light problem yet. Image above was shot with natural light from a nearby window at F16 1000 ISO 1/100. But I did figure out that you have to turn off VR on stands and tripods- something I never realized before- because it creates shake (to counter manmade shake). I think the image is sharper. now onto lighting. |
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Pillar of the Community
United States
4038 Posts |
f16 is overkill and is likely causing some unsharpness. I would still recommend f5.6 or f8.
Agree on VR. It is not recommended for Macro.
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Pillar of the Community
United States
1302 Posts |
Close but no cigar...  F/8 - 1/100 - 1SO 1000 - This was shot in aperture priority mode. This proof was shot with over head light, coin tilted at a 30 degree angle on a home-made stand. Camera was mounted on a tripod. Image distortion is very minimal- to non-significant. I liked the image until I noticed the top of Franklin's head and a few other points where the image was too white. This is one of the better toned proof images I've ever taken however. |
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Moderator
United States
23522 Posts |
I'm not seeing any problems. Proofs are tough, very different than any other coin, and getting one with as little washed out as you managed is an achievement. That one's not close, it's there. I really like it from an aesthetic standpoint, and you're plainly at a point where the only quibbles are purely aesthetic. Which means opinions about the quality of your shot aren't based on technical issues any more.
Keep in mind, the greater the luster, the greater the headache. You're going to find any circulated coin an absolute pushover after what you're going through.
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Pillar of the Community
2087 Posts |
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Moderator
United States
23522 Posts |
This is my "proof rig," a cheap 9" circline kitchen fixture with a hole cut through the center for the camera:  This is what it's capable of:  |
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Pillar of the Community
United States
1302 Posts |
what are the lights? type of bulbs? and where are they in relation to your camera?
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Moderator
United States
23522 Posts |
Quote:
what are the lights? type of bulbs? and where are they in relation to your camera?
Um, that's all in the first picture.... |
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Pillar of the Community
United States
1302 Posts |
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Pillar of the Community
United States
1302 Posts |
 This shot was done super quick, handheld, and only to get a sense of color and light dispersal. This was shot inside a Pro-Cyc My Studio lightbox. While this approach will not work for all types of coins- it will certainly work on raw material and toners. |
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Posted 12/04/2013 12:23 am
