• Ultraviolet Photography
  •  

Fun with ZB1 filter on Sigma 18-35mm with Olympus EM5mk2

5 replies to this topic

#1 dabateman

    Da Bateman

  • Members+G
  • 2,779 posts
  • Location: Maryland

Posted 27 April 2021 - 04:35

I had a chance to test some lenses and filters, but it was an over cast day without direct sunlight on the weekend.
These images were taken using a full spectrum modified Olympus EM5mk2 with Sigma 18-35mm F1.8 lens and the Metabones Speed booster ultra. All images are directly from the camera Jpegs just resized in Irfanview. The White balance was taken off a concrete grey tile I have in the back using one touch white balance after adding the filter.

ZB1 filter (Not a ZWB1, this one is like a Hoya B390 filter) with 2 mm BG39 at F1.3 ISO 200 1/30 seconds at 25mm:
Attached Image: Sigma18_35_SpeedBooster_ZB1_BG39.jpg

ZB1 filter (Not a ZWB1, this one is like a Hoya B390 filter) with 2 mm BG39 at F1.3 ISO 200 1/25 seconds at 25mm:
Attached Image: Sigma18_35_SpeedBooster_ZB1_BG39_Dandlion.jpg

Comparison similar dandelion with 2mm ZWB3 and 2mm BG39 f1.3 ISO400 1/15 seconds
Attached Image: Sigma18_35_SpeedBooster_ZWB3_BG39_Dandlion.jpg


Now removing the BG39 to let the IR in you get a very yellowish Image ISO 200 F2.8 1/50 ZB1 filter only:
Attached Image: Sigma18_35_SpeedBooster_ZB1_WBBG_Dandlions.jpg

Corrected White balance off in camera you get a nicer Orange with just the ZB1 filter, ISO 200 F2.8 1/50:
Attached Image: Sigma18_35_SpeedBooster_ZB1_Dandlions.jpg

This is the same Just ZB filter with more in the view to see that nice Orange landscape:
Attached Image: Sigma18_35_SpeedBooster_ZB1_House.jpg

#2 dabateman

    Da Bateman

  • Members+G
  • 2,779 posts
  • Location: Maryland

Posted 27 April 2021 - 04:46

For those interested this is the Sigma 18-35mm f1.8 lens with Metabones speed booster Ultra on EM5mk2 with 2mm ZWB2 and 2mm BG39, ISO 400 F1.3, 1/2 second shutter speed on overcast day no direct sunlight:
Attached Image: ZWB2_BG39_ISO400_F13_halfsecond.jpg

All these filters in this post are 77mm in diameter on a 72mm to 77mm step up ring.

#3 colinbm

    Member

  • Members+G
  • 2,423 posts
  • Location: Australia

Posted 27 April 2021 - 05:08

Nice collection Dave, I really like the IR ones.
I need to get my head around this ZB1 filter....

#4 Christoph

    Member

  • Members(+)
  • 112 posts
  • Location: Thun, Switzerland

Posted 27 April 2021 - 11:05

Really nice! I'm always looking for a good "Goldie" look... this seems to fit quite well!

#5 dabateman

    Da Bateman

  • Members+G
  • 2,779 posts
  • Location: Maryland

Posted 27 April 2021 - 13:04

View PostChristoph, on 27 April 2021 - 11:05, said:

Really nice! I'm always looking for a good "Goldie" look... this seems to fit quite well!

The light was very weird that day. Some UV and some IR through the over cast clouds. But also odd behavior. The ZWB3 looked different.
So I wouldn't draw conclusions until I get a Sunny day to really see.

#6 Andrea B.

    Desert Dancer

  • Owner-Administrator
  • 8,787 posts
  • Location: UVP Western Division, Santa Fe, New Mexico

Posted 30 April 2021 - 17:20

That (unstacked) yellowish-orange is really a pretty yellow-orange. :smile:
Andrea G. Blum
Often found hanging out with flowers & bees.