I have used a pic that comic strip recently. We have a customer who is waiting for funding for their project. It seems funds will be available next Tuesday!
No, I used LED for a while and CF for a while and came to the conclusion that it made no difference as long as you get one of either type with a high color rendering index and proper daylight balance. Several manufacturers are claiming CRI's over 90 now but I do not know how accurate their claims are. I do not recommend bulbs with a CRI of 80. I do not recommend any bulb under 4000 Kelvin or any marked 'warm white'.
Thank you for going to the trouble for doing this. It is something that I'm currently working on to try and get better coin images. I'm interested that the artificially lit shows more detail than the natural. Does the standalone lamp add much over the LED ring? I have found that I prefer images taken in the diffused light in my conservatory as the coin tends to look more natural and even after Photoshopping, the colour balancing looks better. My nemesis are proof coins. Do yo have a preferred method for these?
Your photos are (always) very impressive, Doug. Heck, I'd be happy to take the (quality) of your rejects. You are (deservedly) to be 'commended'. I find that the problem I have is that (in my experience) no two coins photograph alike (esp. on different days) even using natural light. For me, what works today doesn't work tomorrow. No "One Size Fits All" (unfortunately). But your tips do give me more options.
The PP and TC posts sum up the subject well. If you get a photo you like, it is hard to go back and shoot another just like it. It is like going on a vacation you loved and going back years later to find out they turned it into a tourist trap.
I heartily agree! I just admit I am a rank amateur, and move on. Still reading everyone's tips and advice...
Thanks for posting this! I knew nothing about CRI before this thread and this video. Bonus points: use of Pink Floyd's Dark Side of the Moon album cover in the explanation
Part of me wants to buy one of those photo lights with 160 LED's and CRI 95 offered on eBay but I am not convinced that they would be enough better to justify the cost.
After watching that video I looked up the cited LED panel and put it on my Amazon wishlist just so I'd remember what it was. It is tempting but that's a lot of money for a light. We took a vote, Doug, and decided that as our most knowledgeable and serious ancient coin photographer, you should buy one and provide a full product review .
Again thank you for the great advice that only comes from experience. We are very fortunate to have a great community like this.