Got PME? Also on today’s show: some interesting facts about the human eye and what it has (and doesn’t have) in commen with a camera sensor.
“Just Rods and Cones?” (click image for larger version)
Show support: Rolf Steinort & Ravsitar
Links from today’s show:
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Tips from the Top Floor, produced by photographer Chris Marquardt, is a free mp3 audio and video show about all things photography. From image composition to post processing. Use a point-and-shoot? A DSLR? Beginner? Learn photography from Chris, it's like a free photo workshop! Professional photographer? Get your refresher class here for free!
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Sounds like 8th grade science class all over again.
Haven’t listened to it yet. Can’t wait.
Hehe.. yeah, I actually *did* enjoy those science classes quite a bit. It’s still fun to read up on stuff again (and I’m sure Rebecca and Rolf agree) and freshen up those faint memories a bit
.nef files, how do you prevent the color change when compressed to jpeg in Photoshop to publish on the web, I do not were to ask this and it is for freind . Thanks Jaan
Hi Jaan, that’s a perfect question to ask on the forum!
I am doing 8th grade science (also 5th, 6th, 7th, 9th and 10th grade…) all the day. But it’s fun to do it for the show also….
Rolf (Science Pixie and Chancelor of the Cheeses)
Chris
Please take this in the positive spirit it is meant - is TFTTF losing it’s focus? It seems that the podcast is increasingly being taken up with "admin" and less and less time is spent on the photography topic.
Yes, the "community" aspect to TFTTF is important, but I just think the balance is a bit out. This episode was approximately 14 minutes long - but the actual (interesting) topic was only 4 minutes long! The first 8 minutes covered the podcast awards, your travel etc - if I hadn’t been a listener for so long I may not have bothered listening for 8 minutes to hear the actual topic. Many recent episodes have been similar - the Sept workshop, the awards etc.
Yes, I will continue to listen. Yes, I will vote for the show in the awards. But I just feel that you need to return to the tighter format that was a feature of the earlier shows.
Best wishes and ongoing support,
Richard
(from Anglesea, Australia)
The RGB that you mentioned in you podcast are refered to as Additive color primarys, or projected color primaries. Cyan, Magenta, and Yellow are subtractive primaries and work to remove (absorb) color from white light reflected off of surfaces. Cyan ink absorbs red light, yellow absorbs blue, magenta absorbs green… and the K (black) used in printing is to ensure the deepest possible black tone. Without black, the impurity of the ink would render a dark brown.
When laid over each other, our eyes can’t distingush them from contious tone even though they are printed in a pattern. Cyan and magenta merge to become dark blue, for instance, but when you look very closely at the printed page, you see the individual colors in a rosette pattern. Ink jet printers use the same colors, but print a different type of pattern, that is still visible… it uses tiny dots of the same size and sprays different ammonts depending on the density of color.
There are some really good websites on this around. Might be worth putting in the show notes.
- Mike