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Hedera helix [English Ivy]

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3 replies to this topic

#1 Mark

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Posted 04 November 2017 - 23:31

We found this growing out from some bushes in the back yard, and at the time I guessed it might be some kind of ivy. And for once I was right! I also had this thought just now - how interesting it is that this hobby has led me to learn a fair bit about a subject (flora) I wouldn't have likely otherwise considered. All this internet'ing to learn something about the things I prop in front of my lens - its a bonus, additional to the results of the photography itself. Anyway, before I stray too far from the subject - let me present the subject, first in VIS for reference. Note that the vignette in this image is due to the extended depth of the filter stack used on the lens (usually cropped out in some of my other sets).
Attached Image: 10-08-2017_18-41-07.jpg

I couldn't be happier with the false color inky gold tones and slate blue accents in the UV image.
Attached Image: 10-08-2017_18-32-31_andreau.jpg

I painted the subject here with a single UV torch for the UVIVF image, so illumination isn't all that even. And I expect to get more vibrant results if I go back to collect another sample sometime after the fruits have ripened.
Attached Image: 10-08-2017_18-52-39_baader-s2.jpg

The IR image isn't all that impressive - yet. Here again, I expect more interesting results from a sample with ripened fruits.
Attached Image: 10-08-2017_18-44-07_r72.jpg

Contrasts make veins within the leaves much more obvious in the UVIIF image.
Attached Image: 10-08-2017_18-46-05_r72-uviif.jpg

I no longer have this subject, so I can't shoot any cross-sectioned images of the (unripe) fruits; but moving forward I'll probably be working those shots into these sets as well.

Shooting info:
Camera
- Nikon D750 [broadband] + 50 mm Nikon Series E lens + 12 mm extension tube
Lens filters
- UV: AndreaU-MKII
- VIS & UVIVF: KV418 + 420 nm LP + Baader UV-IR cut [stack]
- IR & UVIIF: Hoya Y(K2) + R72
Illumination/Irradiation
- VIS: White LED bulb
- UV: 4 x 18" T8BL-B + FL-02 glass

- UVIVF: 1 x Convoy S2+
- UVIIF: 2 x [MTE-U303 + Hoya U340]
- IR: 40 W incandescent clear glass bulb
Exposures
- 1/20-20 sec.

- ISO 320
- f11


#2 Andrea B.

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Posted 06 November 2017 - 20:37

I don't think I have ever noticed that English Ivy had berries!
(What kind of amateur botanist is she anyway?? Hmmmm......apparently the lazy kind. :D)

Quite interesting this time the UV version with its lovely blue.
Andrea G. Blum
Often found hanging out with flowers & bees.

#3 Andy Perrin

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Posted 07 November 2017 - 03:40

That's a really nice UV result! I love this.

#4 Hornblende

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Posted 08 November 2017 - 01:33

Very nice, I like those UVIIF images :)