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50mm/f2.8 versus 90mm/f2.8 macro lenses for coin photos?
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<p>[QUOTE="dougsmit, post: 2607771, member: 19463"]I would suggest you try the Larissa with less exposure and softer light. As it is, we have white glare with no detail in the highlights including a large area on the rear of the horse. Sometimes high relief silver coins are better with light bounced off the ceiling or a large white card. I put my camera in a large closet to make this easier. Digital photos have 256 steps in each of three colors. Only very small specular highlights should be recorded at the highest (255) stark white or pitch black (0) except for the background. You get no detail unless there is a separation between tones next to each other. I believ the Larissa is overexposed by a couple stops but harsh light can make it hard to have a full range of tones on a silver coin. My coin shows a similar fault on the horse's rear and belly so I need to work on this one, too. Polished surfaces are harder than textured ones.</p><p>[ATTACH=full]570245[/ATTACH] </p><p><br /></p><p>The elephant strikes me as much better. My main complaint here is the straight cut edge on the right side of the obverse. When shooting, you need to be loose enough that the whole coin is in the photo. You may not care about this but I always leave images in 3:2 proportions so I can have 4x6 prints made without cropping. I do not print them all but that is the reason you see a lot of black at top and bottom of my photos. You might postprocess it just a bit to tone down some glare but a lot of that depends on your computer monitor versus mine. Overall I'd call it a good shot. Is the reverse just a bit sharper focus than the obverse? </p><p>[ATTACH=full]570256[/ATTACH][/QUOTE]</p><p><br /></p>
[QUOTE="dougsmit, post: 2607771, member: 19463"]I would suggest you try the Larissa with less exposure and softer light. As it is, we have white glare with no detail in the highlights including a large area on the rear of the horse. Sometimes high relief silver coins are better with light bounced off the ceiling or a large white card. I put my camera in a large closet to make this easier. Digital photos have 256 steps in each of three colors. Only very small specular highlights should be recorded at the highest (255) stark white or pitch black (0) except for the background. You get no detail unless there is a separation between tones next to each other. I believ the Larissa is overexposed by a couple stops but harsh light can make it hard to have a full range of tones on a silver coin. My coin shows a similar fault on the horse's rear and belly so I need to work on this one, too. Polished surfaces are harder than textured ones. [ATTACH=full]570245[/ATTACH] The elephant strikes me as much better. My main complaint here is the straight cut edge on the right side of the obverse. When shooting, you need to be loose enough that the whole coin is in the photo. You may not care about this but I always leave images in 3:2 proportions so I can have 4x6 prints made without cropping. I do not print them all but that is the reason you see a lot of black at top and bottom of my photos. You might postprocess it just a bit to tone down some glare but a lot of that depends on your computer monitor versus mine. Overall I'd call it a good shot. Is the reverse just a bit sharper focus than the obverse? [ATTACH=full]570256[/ATTACH][/QUOTE]
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50mm/f2.8 versus 90mm/f2.8 macro lenses for coin photos?
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