The Tips from the Top Floor Desert Island Challenge: Spend an entire weekend with one focal length, post your best photo on Twitter with Hashtag #tfttfdesertisland and Chris will review some of your shots on one of the next episodes. Or send a voice mail, telling us what the Desert Island Challenge did for your photography.

Photo by Pablo García Saldaña

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Lightfield photography (aka plenoptic photography) enables photographers to computationally re-focus their images and create different perspectives. We explore the history and future of Lytro and what this technology means for photographers and videographers alike. Lytro Cinema and Immerge 2.0. Adobe's Lightfield experiments. Lightfields explained in videos: Talk by Paul Debevec (start here), Talk by Mark Bolas

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Thema: Versicherungen. Ablehnung der Berufsunfähigkeitsversicherung, privaten Krankenversicherung, privaten Pflegeversicherung. Mit der Diagnose Zöliakie kann es schwierig sein, eine Versicherung zu finden, bei der die Zöliakie nicht Ausschlusskriterium ist.

I want... all my images on all my devices, all edits sync'd, cloud backup, publishing, automatic keywording and a yacht. OK, maybe the yacht is out of scope but the rest is largely available in various forms and Ade has been checking out Google, Adobe and iCloud services to see what works and what really doesn't. Conclusions? This integration or workflow element of our photography is important but which services do Ade and Chris trust with their images and their money?

How about a TFOP meetup in the UK in 2018? Potential for knowledge sharing, playing with other people's toys, recording a live show... If that sounds like fun to you, please let us know by registering your interest.

Support the show: we have set up a donation box where you can contribute to our ongoing research and production effort. We're grateful for your support.

[Disclaimer: This episode does not constitute medical advice] Winter and darkness have effects on people everywhere but living in the polar areas exposes the population to more extreme conditions with the drastic reduction or absence of sun exposure. The effects of not being exposed to a constant or nearly constant day/night cycle may cause winter depression/blues also called Seasonal Affective Disorder or SAD that result in disruption of circadian rhythm with sleeping trouble, low energy and low immune function.

It is not well known what are the physiological bases of SAD, but it may be caused by low serotonin levels. Also the melatonin cycle plays a role in regulating the biological clock and is influenced by changes in daylight. Another factor that may contribute to the insurgence of the syndrome is [vitamin D](

https://www.psychologytoday.com/blog/the-red-light-district/201501/vitamin-d-and-seasonal-affective-disorder-symptoms) deficiency, which is due to low of UVB radiation exposure as the human body cannot produce it endogenously. In order to boost vitamin D one may want to resort to a targeted diet (including fatty fish, mushrooms, eggs) or treatment with special SAD Lamps. Some mammals are better adapted than others to living in the low light conditions in the Arctic: Video

Did the Kodak Coin announcement confuse you? Kodak (actually one of their licensing partners) wants to put the entire photography business on a blockchain. On this episode we try to make sense of this announcement. Also: Chris' new streaming setup that looks like portrait mode (YouTube) and let us know if you'd be interested in a TFOP meetup in the UK in 2018.