Critique My First Stack - Page 2 - Coin Community Forum

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Author	Replies: 23 / Views: 4,236	Page: of 2

SsuperDdave Moderator United States 23522 Posts	Posted 06/07/2012 07:21 am I personally use well-worn, 100% cotton t-shirts for background, as they're easy on the contacting face of the coin. Some use pizza-box supports or a cork on a pillar to "stand off" the coin; I'm not so worried about background intrusion. If I want a truly professional presentation, I'll postprocess for it anyway. Report this Post to the Staff
LaureateBust Valued Member Canada 331 Posts	Posted 06/07/2012 3:39 pm SsuperDdave - I am totally blown away by the changes tethering makes to workflow! Had to make some changes to my work setup, and will probably need to make more, but it's already pretty slick. I had no idea I'd be able to make minute adjustments to focus from the computer as well - thanks for suggesting this to me! Ray - I reshot the previous coin with better white balance, and lights at 11 and 1, and about 75 degrees. It's a single shot, 1/8 s, f/8, ISO 200: Report this Post to the Staff
LaureateBust Valued Member Canada 331 Posts	Posted 06/07/2012 4:18 pm And, one more. 2-image stack, 1/5 s, f/8, ISO 200: I need to get AC power for my camera! Live View shooting really eats the battery up fast. Report this Post to the Staff
rmpsrpms Pillar of the Community United States 4038 Posts	Posted 06/07/2012 8:00 pm I like the lighting much better. What is your down-sizing workflow? Contact me for photographic equipment or visit my home page at: http://macrocoins.com Report this Post to the Staff
LaureateBust Valued Member Canada 331 Posts	Posted 06/07/2012 9:31 pm What I've been doing for these images is crop to 1:1 aspect ratio, then exporting from Adobe Lightroom 3.6 using these options: Convert to format: jpg Resize on long edge: 600 pixels Keep filesize under: 100k Presumably it sizes first, then figures out what jpeg compression it can impose to meet the filesize limit. Report this Post to the Staff
aladinslamp Pillar of the Community United States 3076 Posts	Posted 06/08/2012 12:43 am I would like to try stacking just to understand what it all entails and learn weather a photo representation needs to be stacked or not...Nice to see ones attempts and learnings, you have some great teachers here, I like to keep my ISO at 100, one interesting thing is I have noticed and I am many months since shooting, is the differences/RELATIONSHIP in apeture/shutter speed......... when you change the ISO......For any give shot... The result is the picture is darker or lighter depending on the varibles of the ISO and F/stop/ shutter speed, features.. I Believe its clear, higher ISO settings, while.. they seem to capture a good picture truely introduce noise into the pictures outcome... That being said... I don't meant to "JACK YOUR THREAD" My last 6 months are just following, and not contributing as construction and plumbing and every other catrastrofey I am working on and can't get back to photoing... I hope this is something you can think upon, I know it is something you are dealing with on the individual photo's with out stacking, and why stacking is about correcting this.. So I will post another thread concerning these relationships.G Report this Post to the Staff
LaureateBust Valued Member Canada 331 Posts	Posted 06/08/2012 11:27 am Hi aladdinslamp - the purpose behind focus stacking is to bring all parts of an image into focus, because at high magnification and wide aperture the depth of focus is so shallow that it might not be possible in one image at the time of capture. So this is my rudimentary understanding of the process: The program that I use after Ray's recommendation (CombineZ) takes multiple similar images and combines them into one composite image that uses the best focused portions from each image. It's basically a black box to me as far as knowing what the program does internally. I am a total novice of focus stacking, but the program is simple to use if you stick to the largely automated macros. With my lens I'm able to achieve a maximum reproduction ratio of 1:1, and I don't think I benefit from using more than 2 images to create a stack. I take one photo trying to focus on the highest point of relief, either the rim or part of the design, and then a second image focusing on the field. In some cases having the field slightly out of focus might actually help the final image Edited by LaureateBust 06/08/2012 11:32 am Report this Post to the Staff
SsuperDdave Moderator United States 23522 Posts	Posted 06/09/2012 11:00 am Tethering is wondrous, ain't it? I haven't looked back since the moment I first tried it. Report this Post to the Staff
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