[UV] more on 340nm Jupiter-U vs Baader-U filter for short wave reflected UV

Today more about that new Jupiter-U filter of mine vs. the Baader U (Venus) filter. Shots taken today at the wonderfully blossoming Hermannshof, Weinheim, Germany.

[click on image to see a larger one]

The Jupiter-U is a shorter wave filter (center is 340nm) and its transmission is this, as compared to the Baader (Venus) U filter (red line):


Here now some results of today:

Baader U2 left, Jupiter-U right:


VIS left, Baader U2 right:


VIS left, Jupiter-U right:


and another one:

Baader U2 left, Jupiter-U right:


VIS left, Baader U2 right:


VIS left, Jupiter-U right:


very subtle tone differences get visible in comparison to the Baader-U filter.


Stay tuned, more will follow on that fascinating subject...

More info on this very interesting field may be found on my site http://www.pbase.com/kds315/uv_photos

[UV] 340nm Jupiter-U filter for short wave reflected UV

Today about a new prototype filter of mine. It is called "Jupiter-U" and it is a shorter wave filter than the Baader U (Venus) filter, that I mainly use for reflected UV photography. Its center wavelength is around 340nm.

[click on image to see a larger one]

It is a shorter wave filter (center is 340nm) and its transmission is this, as compared to the Baader (Venus) U filter (red line): Here now some first impression about using the Jupiter-U filter. Target was a Gazania flower. Left: Venus U2, right Jupiter-U: Here VIS comparison shots: Baader-U (Venus U): Jupiter-U: Interesting to note the metallic golden rendering of leafs: Here now using a bred Kalanchoe floower in a quadriptych showing the VIS image (top left), Baader U2 (top right), Jupiter-U (bottom left), special 300-350nm filter (bottom right) and in more detail: If you look closer at the flower center, you'll notice only in the two shorter wave shots on the bottom a variation of reflectance (indicated by changing colors)

[To make things clear, this is a filter for my work, it is not for sale.]

Stay tuned, more will follow on that fascinating subject...

More info on this very interesting field may be found on my site http://www.pbase.com/kds315/uv_photos

Lokrum Botanical Gardens Croatia - reflected UV photography

Last week I visited Croatia and one day we were at Lokrum island, located just opposite of Dubrovnik in the Adriatic Sea. Lokrum has a Botanical Garden which is managed by the University of Dubrovnik. Here a few impressions, all as VIS-UV diptychs. The UV shots were done using the Baader U filter (320-390nm).

[click on image to see a larger one]

Iris croatica, the country flower: Carpobrotus acinaciformis, seen all around the coast: Rhaphiolepis umbellate, a decorative tree, seen a lot in parks: Anagallis coerulea, a very pretty "weed" and then the "stars" of the park, which were brought in from Chile years ago Puya chilensis, about 2.5 meters tall flower stand: Puya berteroniana, same size, but full of these turquoise colored flowers Here a weed,Hypochoeris radicata, seen all over on the street curbs etc. as well as Malva sylvestris Anagallis arvensis, also a nice weed: Oxalis corniculata, another nice weed: Crocosmia xx (yet unidentified species), an ornamental plant: Crocosmia aurea, also an ornamental plant:

Stay tuned, more will follow on that fascinating subject...

More info on this very interesting field may be found on my site http://www.pbase.com/kds315/uv_photos

Clematis human and bee vision UV ultraviolet photography

Today about a white clematis flower shot in UV using a Baader U (320-390nm) and a special Bee Vision filter, that allows to map UV as blue into an image so as to simulate what bees can see (UV, Blue, Green). Shot was done using a Cerco 94mm quartz fluorite lens.

[click on image to see a larger one]

Visual light shot (VIS):


Ultraviolet light (Baader U filter, 320-390nm):


Simulated Bee Vision (special filter, UV->Blue, Green, Red):


Triptych of those images above:


Note the dark center in the ultraviolet shot which is pertained also in the simulated bee (insect) vision shot.


Stay tuned, more will follow on that fascinating subject...

More info on this very interesting field may be found on my site http://www.pbase.com/kds315/uv_photos

Bidens ferulifolia, trichromatic human and bee vision UV ultraviolet photography

Today about a Bidens ferulifolia spring flower shot in UV using a Baader U (320-390nm) and a special Bee Vision filter, that allows to map UV as blue into an image so as to simulate what bees can see (UV, Blue, Green). Shot was done using a Cerco 94mm quartz fluorite lens.

[click on image to see a larger one]

Visual light shot (VIS):


Ultraviolet light (Baader U filter, 320-390nm):


Simulated Bee Vision (special filter, UV->Blue, Green, Red):


Triptych of those images above:


Note the dark center UV pattern which is also pertained in the bee vision shot and the UV bright outer petal part, which together create a very attractive nectar guiding "landing platform" for bees / insects.

Quite interesting what this all yellow (for us) flower looks like compared to what it does for a bee or insect.


Stay tuned, more will follow on that fascinating subject...

More info on this very interesting field may be found on my site http://www.pbase.com/kds315/uv_photos

[UV] Caltha palustris (Buttercup) flower in deep UV reflected ultraviolet photography

Today about a Caltha palustris (Buttercup, Marsh Marigold) spring flower shot in deep UV using a Baader U (320-390nm) and a special 300-350nm filter. Shot was done using a Cerco 94mm quartz fluorite lens.

[click on image to see a larger one]

The UV images here also uses my standardized false UV color normal + high intensity palette:



Visual light shot (VIS):


Ultraviolet light (Baader U filter, 320-390nm):


Ultraviolet light (special filter, 300-350nm):


Ultraviolet light (special filter, 300-350nm, different whitebalance):


It was too windy for that special filter, so I had to use high ISO, so the quality is not my usual one.

So exploring the world beyond 350nm goes on...


Stay tuned, more will follow on that fascinating subject...

More info on this very interesting field may be found on my site http://www.pbase.com/kds315/uv_photos

[UV] Taraxacum (Dandelion) flower in deep UV reflected ultraviolet photography

Today about a Taraxacum officinale (Dandelion) spring flower shot in deep UV using a Baader U (320-390nm) and a special 300-350nm filter. Shot was done using a Cerco 94mm quartz fluorite lens.

[click on image to see a larger one]

The UV images here also uses my standardized false UV color normal + high intensity palette:



Visual light shot (VIS):


Ultraviolet light (Baader U filter, 320-390nm):


Ultraviolet light (special filter, 300-350nm):


Ultraviolet light (special filter, 300-350nm, different whitebalance):


So exploring the world beyond 350nm goes on...


Stay tuned, more will follow on that fascinating subject...

More info on this very interesting field may be found on my site http://www.pbase.com/kds315/uv_photos