Gazania multispectral using a simple quartz singlet lens

kds315* · Expire: 2021-03-09

This is a Gazania rigens flower shot using a custom made up UV lens from a simple quartz lens singlet, stopped down at around f16 (estimated as no scale). This was a test for a friend who was curious if sharp images could be reached - which I had promised.

VIS:

Simulated Bee Vision V3:

Simulated Bee Vision V2:

UV:

Missed the focus at the visible shot a bit, sorry.

As you may notice, the center is quite sharp, but of course the more outside it gets, the more the blur increases. For flowers this can actually be quite nice (for my taste).

And here you have the comparison as a quadriptych VIS-UV-BV2-BV3:

Well, what says you? Wink

Himself · Expire: 2013-05-30

I like the UV one. Looks fearsome.
I say that you misfocused the VIS one. That is, the leaf is in focus not the flower. If you wanted like that, mea culpa.
As a plant, amazingly beautiful.
Hand held?

PS
As usual I managed finally to read the last line, the misfocused one. Embarassed

patrickh · Expire: 2011-11-18

Amazing. Real quartz?

patrickh

poilu · Expire: 2019-08-29

amazing from a singlet !

kds315* · Expire: 2021-03-09

Yep, a real fused silica singlet (modern production, not real cut quartz - but I have such lenses).

56 DIN · Expire: 2021-11-18

great results - as always
the BV´s are my favs
btw, how do you communicate with the bee´s to know which one see´s 2 and which 3 ? or is it different types of bees going to different flower colors ?

kds315* · Expire: 2021-03-09

Thanks! My XBV filters are still experimental, so the last digit stands for some sort of "evolution". I'm still tuning them...
Bees only see UV, blue and green (and a tad red), butterflies and some birds however see UV, blue, green and red, so
XBV stands for simulated bee vision as well as simulated butterfly or bird vision XBV filters allow to simulate both, depending on type.

kds315* · Expire: 2021-03-09

Shot another set, flower placed into the center, higher magnification, otherwise unchanged setup

Normal visual shot VIS:

Simulated Bee Vision V3:

Simulated Bee Vision V2:

Ultraviolet:

In my opinion this central placement is the best way to use this lens singlet, as it minimizes the visible blur.

patrickh · Expire: 2011-11-18

Awesome!

patrickh

kds315* · Expire: 2021-03-09

Thanks Patrick!

Made a few different shots yesterday outside in sunlight, also using Gazanias, here one "contra lucem"

Minolfan · Joined: 30 Dec 2008 Posts: 3439 Location: Netherlands

Surprising pictures; you didn't promise too much!

kds315* · Expire: 2021-03-09

Thanks! Here's another one...

ForenSeil · Joined: 15 Apr 2011 Posts: 2726 Location: Kiel, Germany.

Awesome!
Where did you find the singlet?/Who made it?
Came it with aperture?