• Ultraviolet Photography
  •  

Novoflex 60mm f/4.0 Macro-Noflexar

Lens
2 replies to this topic

#1 UlfW

    Ulf W

  • Members+G
  • 1,830 posts
  • Location: Sweden, Malmö

Posted 08 March 2021 - 12:56

Finalized: Work in progress.
Last Update:
Novoflex 60mm f/4.0 Macro-Noflexar

Manufacturer: Staeble-Werk?
Manufacturer's lens designation: NOVOFLEX-MACRO-NOFLEXAR,
Currently manufactured: No
Lens type: Macro Lens, for slide copy
Focal length: 60mm
Aperture range: 4.0 - 16, Manual, 10 blades
Design: TBD
Flange Focus distance: -
Recommended magnification range: 0.6x - 2x ( from the 60/4.5 - version )
Optimal magnification: TBD
Mount: M39 x 1
Sensor format/coverage: TBD
Front filter: 40.5 x 0.75
Lens coating: Yes
Introduction year: after 1969
S/N of test object: 336844
notes:
Earlier versions with the same lens speed were marked (NOVOFLEX) STAEBLE-KATAGON and BALFLEX on the rear end surface
Even earlier versions had a lower speed of f/4.5

Image of the test object:

Attached Image: IMG_2688.jpg Attached Image: IMG_2689.jpg Attached Image: IMG_2692.jpg

Transmittance Summary
Definitions of the parameters below
  • Range: The Macro-Noflexar 60mm f/4.0 lens transmits 1-80% in an increasing slope from 328nm to 400nm.
  • TVISmax (%) = 91%
  • T400nm (%) = 82%
  • T365nm (%) = 72%
    This high percentage is an indicator for relatively short exposure time under typical UV-pass filtration peaking around 365 nm.
  • λUV HMvis(nm) = 346nm
  • λUV HM400 (nm) = 344nm
  • λUV Zero (nm) = 328nm
    These three values indicate that the lens is working well for mos UV-A photography with filters and for this, suitable cameras.

Spectral transmission graphs:
UV-NIR, The Macro-Noflexar 60mm f/4.0
Attached Image: MacroNoflexar60 full.png
The transmission measurement accuracy into the end of NIR range is less good due to limitations in the light source.

UV, The Macro-Noflexar 60mm f/4.0
Attached Image: MacroNoflexar60 uv.png

UV-Log, The Macro-Noflexar 60mm f/4.0
Attached Image: MacroNoflexar60 uv log.png
Numerical Spectra Data available: Yes

General comments about the UV-reach:
TBD


Filters and how to use them on this lens:
It is possible to use front and also rear mounted filters, either in lens mount adapters for mirrorless cameras like Sony A-series etc, or placed directly in the camera.


Handling and focussing:
This lens needs to be combined with a helicoid or macro bellows to set desired magnification.

Sharpness:
High


Image samples:
UV:
Attached Image: UV tuss.png
Stacked from 4 images, imaging scale ca 1.5:1, 100% Image crop
Filter: S8612, 2mm + U-360, 2mm

BUG-3:
Attached Image: UVVIS tuss.png
Stacked from 4 images, imaging scale ca 1.5:1, 100% Image crop
Filter: S8612, 2mm + BG3, 2mm

BUG
Attached Image: BUG Tuss.png
Stacked from 4 images, imaging scale ca 1.5:1, Image crop
Filter: S8612, 2mm + UG5, 1.5mm

Edited by UlfW, 06 April 2021 - 07:53.

Ulf Wilhelmson
Curious and trying to see the invisible.

#2 Andrea B.

    Desert Dancer

  • Owner-Administrator
  • 9,115 posts
  • Location: UVP Western Division, Santa Fe, New Mexico

Posted 08 March 2021 - 17:33

I think your first two photos certainly prove the worth of this Macro-Noflexar for close-up UV work. :cool:
Andrea G. Blum
Often found hanging out with flowers & bees.

#3 UlfW

    Ulf W

  • Members+G
  • 1,830 posts
  • Location: Sweden, Malmö

Posted 08 March 2021 - 20:18

Yes I agree.
The UV-reach is also definitely good enough for these types of photos.

I also have a second 60/4.0 marked Staeble-Katagon that I eventually will verify has the same transmission.

The f/4.5 version is likely of a different optical design with a longer lens body.
I do not have that type of lens. (yet?) :smile:
Ulf Wilhelmson
Curious and trying to see the invisible.