View previous topic :: View next topic |
Author |
Message |
alex ph
Joined: 16 Mar 2013 Posts: 1674
|
Posted: Tue Dec 20, 2022 8:31 pm Post subject: Som Berthiot Flor 3.5/105 off an old folder |
|
|
alex ph wrote:
Got this pretty large and heavy lens on Sito shutter already stripped off an old folder. I've found the closest relative of this lens in ebay sitting on Royer folder rangefinders. My copy is slightly different in design, having a "classic" distance scale on the lens' side, and not on the front as it is the case of the rangefinders' version. So this one was most probably attached to a superior model of Kinax or Royer having no rangefinder.
Here follow some quick shots from the lens put on bellows and attached to a Sony Nex, in a gray rainy day. I was expecting some possible ("vintage") glow or special bokeh softness WO. Not from this lens, at least not in the first test under gloomy conditions. Just an excellent glass irrespective of its age.
All shots are taken WO, with autocontrast applied.
#1 Long distance
#2
#3 A 100% crop from the previous, no PP
#4 Midrange
#5 Close up + close bokeh
#6 Distant bokeh
#7 Transition to OOF
|
|
Back to top |
|
|
kds315*
Joined: 12 Mar 2008 Posts: 16639 Location: Weinheim, Germany
Expire: 2021-03-09
|
Posted: Wed Dec 21, 2022 4:07 pm Post subject: |
|
|
kds315* wrote:
_________________ Klaus - Admin
"S'il vient a point, me souviendra" [Thomas Bohier (1460-1523)]
http://www.macrolenses.de for macro and special lens info
http://www.pbase.com/kds315/uv_photos for UV Images and lens/filter info
https://www.flickr.com/photos/kds315/albums my albums using various lenses
http://photographyoftheinvisibleworld.blogspot.com/ my UV BLOG
http://www.travelmeetsfood.com/blog Food + Travel BLOG
https://galeriafotografia.com Architecture + Drone photography
Currently most FAV lens(es):
X80QF f3.2/80mm
Hypergon f11/26mm
ELCAN UV f5.6/52mm
Zeiss UV-Planar f4/60mm
Zeiss UV-Planar f2/62mm
Lomo Уфар-12 f2.5/41mm
Lomo Зуфар-2 f4.0/350mm
Lomo ZIKAR-1A f1.2/100mm
Nikon UV Nikkor f4.5/105mm
Zeiss UV-Sonnar f4.3/105mm
CERCO UV-VIS-NIR f1.8/45mm
CERCO UV-VIS-NIR f4.1/94mm
CERCO UV-VIS-NIR f2.8/100mm
Steinheil Quarzobjektiv f1.8/50mm
Pentax Quartz Takumar f3.5/85mm
Carl Zeiss Jena UV-Objektiv f4/60mm
NYE OPTICAL Lyman-Alpha II f1.1/90mm
NYE OPTICAL Lyman-Alpha I f2.8/200mm
COASTAL OPTICS f4/60mm UV-VIS-IR Apo
COASTAL OPTICS f4.5/105mm UV-Micro-Apo
Pentax Ultra-Achromatic Takumar f4.5/85mm
Pentax Ultra-Achromatic Takumar f5.6/300mm
Rodenstock UV-Rodagon f5.6/60mm + 105mm + 150mm
|
|
Back to top |
|
|
jamaeolus
Joined: 19 Mar 2014 Posts: 2965 Location: Eugene
Expire: 2015-08-20
|
Posted: Wed Dec 21, 2022 11:09 pm Post subject: |
|
|
jamaeolus wrote:
Very nice! _________________ photos are moments frozen in time |
|
Back to top |
|
|
alex ph
Joined: 16 Mar 2013 Posts: 1674
|
Posted: Sat Dec 24, 2022 7:20 pm Post subject: |
|
|
alex ph wrote:
Thank you, fellows!
Here are some more close-ups in better light:
#1
#2
#3
#4
#5
|
|
Back to top |
|
|
simple.joy
Joined: 30 May 2022 Posts: 611
|
Posted: Sat Dec 24, 2022 10:19 pm Post subject: |
|
|
simple.joy wrote:
alex ph wrote: |
Thank you, fellows!
Here are some more close-ups in better light:
#3
|
Great shots - this one is very beautiful. I feel like the rendering works extremely well here. _________________ ---
Manual lens enthusiast
https://www.flickr.com/photos/simple_joy/ |
|
Back to top |
|
|
jamaeolus
Joined: 19 Mar 2014 Posts: 2965 Location: Eugene
Expire: 2015-08-20
|
Posted: Sun Dec 25, 2022 4:41 am Post subject: |
|
|
jamaeolus wrote:
great colors. Something the designers were not looking at I imagine. _________________ photos are moments frozen in time |
|
Back to top |
|
|
Oldhand
Joined: 01 Apr 2013 Posts: 6000 Location: Mid North Coast NSW - Australia
|
Posted: Sun Dec 25, 2022 9:01 pm Post subject: |
|
|
Oldhand wrote:
jamaeolus wrote: |
great colors. Something the designers were not looking at I imagine. |
I agree.
Rendering beautiful pastels with light saturation is often missing from our modern lenses - which have higher contrast and finer detail.
It is one of the reasons that I like the earlier Komuras.
Delightful rendering - congratulations
Tom |
|
Back to top |
|
|
alex ph
Joined: 16 Mar 2013 Posts: 1674
|
Posted: Tue Dec 27, 2022 10:35 pm Post subject: |
|
|
alex ph wrote:
Simple.joy, Jamaeolus, Oldhand, thank you! That's a real pleasure to have such a detailed feedback and to look back at the snapshots with a more attentive eye.
I was wondering the optic design of the lens giving such smooth transitions from in-focus to OOF areas, which looks a bit different from Tessar which is usually harsher. In a meticulous study of LF SOM Berthiot Dan Fromm states that LF Flor lenses were probably 5-element Tessar-like ones, while MF and SF were 4-element Tessar-like ones. I tried counting reflexions in mine and found 4 pairs of colour and well separated reflexions and than one really small deeper, kind of attached to or hiding behind the previous one. This hints there could be a rear doublet, but I was never sure to master well the art of counting reflexions.
Here is one more sample of transitions to OOF the lens renders
#1
As for colours, autocontrast does magic, extending the DR to a kind of "organic" film feeling while deepening the overall contrast. With many lenses the trick does not work well, changing natural colours or washing out the picture. Som Berthiot (this one and others I tested from this mark) usually stand autocontrast adjustment very well.
#2
Meanwhile, a part of the DR is in some way hidden in the SOOC jpg and needs to be "developped" or revealed. To give an idea, here is one of the previous images before autocontrst was applied. Even though colours are less striking, their general balance remains pleasing to my taste. What would you say?
#3
|
|
Back to top |
|
|
alex ph
Joined: 16 Mar 2013 Posts: 1674
|
Posted: Sat Jan 14, 2023 11:05 pm Post subject: |
|
|
alex ph wrote:
Some more open air shots in a good natural light
#1
#2
#3
#4
#5
#6
#7
|
|
Back to top |
|
|
alex ph
Joined: 16 Mar 2013 Posts: 1674
|
Posted: Sat Mar 04, 2023 12:02 pm Post subject: |
|
|
alex ph wrote:
Catching rarely a red stray beam, like in the previous #6, the lens generally stands pretty well direct and lateral sun light.
#1
#2
It also has an appealing balanced colour rendering, such as blue, green and yellow in the same frame none of which seems shifted.
#3
|
|
Back to top |
|
|
|
|
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
|