View previous topic :: View next topic |
Author |
Message |
kds315*
Joined: 12 Mar 2008 Posts: 16541 Location: Weinheim, Germany
Expire: 2021-03-09
|
Posted: Sun Oct 01, 2017 10:47 pm Post subject: The flattening of modern lenses or the death of 3D pop |
|
|
kds315* wrote:
Found this by coincidence: http://yannickkhong.com/blog/2015/10/4/the-flattening-of-modern-lenses-or-the-death-of-3d-pop
Basically the author states that a lens giving 3D pop should not have more than 9 lens elements
He gives plenty of examples ... especially here: http://yannickkhong.com/blog/2015/11/12/depth-vs-flat-lens-quick-comparison
Statements guys? _________________ 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 |
|
|
luisalegria
Joined: 07 Mar 2008 Posts: 6627 Location: San Francisco, USA
Expire: 2018-01-18
|
Posted: Mon Oct 02, 2017 2:10 am Post subject: |
|
|
luisalegria wrote:
This is one of those comparisons where I realize I lack the visual processing brain connections, probably, to see the differences.
Im sure some people can. Just not me. _________________ I like Pentax DSLR's, Exaktas, M42 bodies of all kinds, strange and cheap Japanese lenses, and am dabbling in medium format/Speed Graphic work. |
|
Back to top |
|
|
miran
Joined: 01 Aug 2012 Posts: 1364 Location: Slovenia
|
Posted: Mon Oct 02, 2017 6:08 am Post subject: |
|
|
miran wrote:
Yes, that's all fine and true but that's only one part of the equation. You have to look at the imaging pipeline as a whole and optimize each single element of the chain to take the whole system to the highest level of colour 3D tonal fidelity. Because for example you can't really appreciate the full potential of your lenses until you replace all the connectors and flat cables inside your digital camera with high end gold plated ones with superior digital signal transmission properties. The chain is a strong as its weakest link! Of course I'm assuming you've already treated your sensor with a high quality nano fairy dust coating, that's a given in today's world of hi-fi photography. _________________ my flickr stream |
|
Back to top |
|
|
kds315*
Joined: 12 Mar 2008 Posts: 16541 Location: Weinheim, Germany
Expire: 2021-03-09
|
Posted: Mon Oct 02, 2017 7:24 am Post subject: |
|
|
kds315* wrote:
luisalegria wrote: |
This is one of those comparisons where I realize I lack the visual processing brain connections, probably, to see the differences.
Im sure some people can. Just not me. |
Welcome to the club Luis, I felt I was missing something, too. Hence why I posted it here _________________ 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 |
|
|
Teemō
Joined: 07 Apr 2016 Posts: 586 Location: Australia
|
Posted: Mon Oct 02, 2017 7:31 am Post subject: |
|
|
Teemō wrote:
The author is a known moron.
Quote: |
Glass is a capacitor. Simply put, it absorbs light energy thus slows it down and feeds it into the following glass element. |
Glass is not a capacitor. It is used as a dielectric (insulator) in capacitors. Capacitance is also not the operating principal of the refraction (absorption and reemission) of photons in the glass.
Quote: |
As less luminous information can be recorded by the sensor as the light passes through each glass elements, the lens has to have a bigger front element to compensate for the loss of light going through the lens barrel and its many glass elements. |
Simple scattering, absorption and reflection of light!
Quote: |
Light adopts a spiral behavior that spins into the lens. |
That's just absurd and kind of funny, if he wasn't actually serious. He took Ken Wheeler's garbage and ran with it. Ken Wheeler - the same person who states that lenses with chromatic aberration are truly rendering the nature and the depth of light in an image, according to his theories of electromagnetic mechanics.
If he can write an article exploring his true identity, Yannick Mong or Yannick Nong, then I might be interested. |
|
Back to top |
|
|
marcusBMG
Joined: 07 Dec 2012 Posts: 1304 Location: Conwy N Wales
|
Posted: Mon Oct 02, 2017 3:55 pm Post subject: |
|
|
marcusBMG wrote:
3-D pop?
And this lens (guess) has only 3 elements. QED! _________________ pentax ME super (retired)
Pentax K3-ii; pentax K-S2; Samsung NX 20; Lumix G1 + adapters;
Adaptall collection (proliferating!) inc 200-500mm 31A, 300mm f2.8, 400mm f4.
Primes: takumar 55mm; smc 28mm, 50mm; kino/komine 28mm f2's, helios 58mm, Tamron Nestar 400mm, novoflex 400mm, Vivitar 135mm close focus, 105mm macro; Jupiter 11A; CZJ 135mm.
A classic zoom or two: VS1 (komine), Kiron Zoomlock... |
|
Back to top |
|
|
wolan
Joined: 30 Jun 2015 Posts: 576 Location: Zurich
|
Posted: Mon Oct 02, 2017 4:09 pm Post subject: |
|
|
wolan wrote:
This story that modern lenses lack of 3d pop because of the too many glass elements in them is pure bullshit.
I have many modern Nikon lenses and I love them as much as my many vintage lenses. They are just different.
Read this article: https://photographylife.com/the-death-of-beautiful-rendition-and-3d-pop-on-modern-lenses, but till the end! _________________ https://www.flickr.com/photos/149089857@N03/ |
|
Back to top |
|
|
iangreenhalgh1
Joined: 18 Mar 2011 Posts: 15685
Expire: 2014-01-07
|
Posted: Mon Oct 02, 2017 6:06 pm Post subject: |
|
|
iangreenhalgh1 wrote:
This author is absolutely a moron. I have lenses with 4 elements, made in the 1950s (Ross Xpress 4/100) that can produce a lot of 3D pop and I have lenses made in the 200s with 16 elements (Hitachi Illumina Super ED 1.8-2.2/20-38mm) that can also produce a lot of pop. _________________ I don't care who designed it, who made it or what country it comes from - I just enjoy using it! |
|
Back to top |
|
|
oldali
Joined: 23 Mar 2014 Posts: 14 Location: Hungary
|
Posted: Mon Oct 02, 2017 6:09 pm Post subject: |
|
|
oldali wrote:
I read an interview with Peter Karbe (Leica lens designer). He did't speak about 3D effect, but I think he thought similar effect in case of apo summicron 50 “the contrast has to fall off very fast in terms of depth of field. That’s it. That is the idea – and the ideal. The fall off has to be very fast!” I can see 3D effect almost all photos. Here the article: http://www.overgaard.dk/leica-50mm-APO-Summicron-M-ASPH-f-20.html |
|
Back to top |
|
|
chhayanat
Joined: 11 Apr 2016 Posts: 242 Location: The Cow Belt
|
Posted: Tue Oct 03, 2017 10:36 am Post subject: |
|
|
chhayanat wrote:
miran wrote: |
Yes, that's all fine and true but that's only one part of the equation. You have to look at the imaging pipeline as a whole and optimize each single element of the chain to take the whole system to the highest level of colour 3D tonal fidelity. Because for example you can't really appreciate the full potential of your lenses until you replace all the connectors and flat cables inside your digital camera with high end gold plated ones with superior digital signal transmission properties. The chain is a strong as its weakest link! Of course I'm assuming you've already treated your sensor with a high quality nano fairy dust coating, that's a given in today's world of hi-fi photography. |
_________________ Chhayanat
Pentax-M 28/2.8; 35/2; 50/1.4; 100/2.8; 80-200/4.5; 400/5.6.
Carl Zeiss Jena Flektogon 35/2.4; Pancolar 50/1.8 (black).
Film cameras:
Zeiss Ikon Volta 135/6.3 Sonnar 9cm x 12 cm plate/sheet film;
Zeiss Ikon Ikonta 521 75/3.5 Novar (post-War) 6cm x 4.5cm
Pentax MX x 2 (black);
Digital bodies:
Pentax K200D;
Samsung GX-20; |
|
Back to top |
|
|
cooltouch
Joined: 15 Jan 2009 Posts: 9097 Location: Houston, Texas
|
Posted: Tue Oct 03, 2017 11:40 am Post subject: |
|
|
cooltouch wrote:
(quote) What does this sentence mean? blah-blather-blat-buh-blah-blat-blather-buh-bluh-blather-blat-buh-bluh . . . (and so on, ad nauseum)
Here's the way I see it with regard to "3D pop": Ya gets 3D pop with a fast lens. Ya don't gets 3D pop with a slow lens. Sensors be damned. We're talking about lenses, right? The above two statements of mine are somewhat dependent on focal length. That is, 3D pop is more noticeable with increased focal length, less noticeable with decreased focal length. But still noticeable, regardless. _________________ Michael
My Gear List: http://michaelmcbroom.com/photo/gear.html
My Gallery: http://michaelmcbroom.com/gallery3/index.php/
My Flickr Page: https://www.flickr.com/photos/11308754@N08/albums
My Music: https://soundcloud.com/michaelmcbroom/albums
My Blog: http://michaelmcbroom.com/blogistan/ |
|
Back to top |
|
|
piggsy
Joined: 04 May 2015 Posts: 84 Location: Brisbane, Australia
|
Posted: Tue Oct 03, 2017 12:45 pm Post subject: |
|
|
piggsy wrote:
cooltouch wrote: |
(quote) What does this sentence mean? blah-blather-blat-buh-blah-blat-blather-buh-bluh-blather-blat-buh-bluh . . . (and so on, ad nauseum)
Here's the way I see it with regard to "3D pop": Ya gets 3D pop with a fast lens. Ya don't gets 3D pop with a slow lens. Sensors be damned. We're talking about lenses, right? The above two statements of mine are somewhat dependent on focal length. That is, 3D pop is more noticeable with increased focal length, less noticeable with decreased focal length. But still noticeable, regardless. |
With the most charitable reading possible - you could maybe suggest that improving geometric correction and flattening the area in focus could reduce a perception of "3d", and more glass tends to be thrown into the path to achieve that. But IIRC this guy is adamant that this isn't the correct reading! It has to be his specific thing of each element over a certain number somehow diminishing the excellent 3d popping image you would otherwise be getting as part of some conspiracy to rob you of good photos.
I don't know enough to demolish it utterly but I think everyone sees the same kind of internet crank assembly kit at work - bits of laymans explanations and partly understood technical terms being reassembled into something new, only, without any of the hard work being done to prove it. _________________ https://www.flickr.com/photos/piggsyface/
You can't fax glitter. |
|
Back to top |
|
|
cooltouch
Joined: 15 Jan 2009 Posts: 9097 Location: Houston, Texas
|
Posted: Tue Oct 03, 2017 4:20 pm Post subject: |
|
|
cooltouch wrote:
Okay, fine. Here's a modern lens -- a 50mm f/0.95 with 10 elements. For Sony E-mount cameras. Is anyone really gonna suggest that this lens lacks having a 3D look?
https://www.bhphotovideo.com/c/product/1072733-REG/mitakon_mtk50mf095bk_50mm_for_0_95_lens.html
Here's another -- a 40mm f/0.85 with 10 elements. For Sony E-mount and a couple of others. Same question as above:
https://www.bhphotovideo.com/c/product/1056301-REG/handevision_hvib4085se_ibelux_40mm_f_0_85_lens.html _________________ Michael
My Gear List: http://michaelmcbroom.com/photo/gear.html
My Gallery: http://michaelmcbroom.com/gallery3/index.php/
My Flickr Page: https://www.flickr.com/photos/11308754@N08/albums
My Music: https://soundcloud.com/michaelmcbroom/albums
My Blog: http://michaelmcbroom.com/blogistan/ |
|
Back to top |
|
|
Himself
Joined: 01 Mar 2007 Posts: 3214 Location: Montreal
Expire: 2013-05-30
|
Posted: Tue Oct 03, 2017 10:46 pm Post subject: |
|
|
Himself wrote:
iangreenhalgh1 wrote: |
This author is absolutely a moron. |
You are too kind.
I'd say he's an absolute moron. _________________ Moderator Himself |
|
Back to top |
|
|
jamaeolus
Joined: 19 Mar 2014 Posts: 2927 Location: Eugene
Expire: 2015-08-20
|
Posted: Wed Oct 04, 2017 12:03 am Post subject: |
|
|
jamaeolus wrote:
What does this moron have to say about vodka? _________________ photos are moments frozen in time |
|
Back to top |
|
|
folderholder
Joined: 24 Jan 2010 Posts: 102 Location: California
|
Posted: Sun Oct 08, 2017 7:25 pm Post subject: |
|
|
folderholder wrote:
Here is a comparison for tonality between a a modern Canon pancake EF-S 24mm f/2.8 lens (left) and a 24mm Yashica f/2.8 ML lens (right). The Yashica is a 9 element lens while the Canon has 6 elements. What interests me is the watermarks on the Beijing ticket in the center of the frame. The watermarks are clearly visible in the Yashica and nearly absent in the Canon pancake. If I owned the regular Canon 24mm (10 elements) I would like to try that out, too.
Anyway, in actual picture taking I find the Canon produces nice, sharp photos that lack depth and sparkle. Maybe this inability to separate tones is why? The size and weight of the Canon are great for traveling and I haven't had any mechanical issues with it at all.
Both images shot at f/2.8 on a Canon EOS-M6. No pp, straight jpgs from the camera. 50% magnification and cropped. _________________ Best wishes,
Peter
www.pandacollector.com |
|
Back to top |
|
|
Eddie46
Joined: 05 Dec 2016 Posts: 135 Location: cardiff,UK
|
Posted: Sun Oct 08, 2017 8:30 pm Post subject: |
|
|
Eddie46 wrote:
Reminds me of the Heady days of Analogue Hi-Fi, with so called journalists and other Experts claiming they could tell the difference between types of Cables used to connect speakers etc! |
|
Back to top |
|
|
visualopsins
Joined: 05 Mar 2009 Posts: 10531 Location: California
Expire: 2025-04-11
|
Posted: Sun Oct 08, 2017 8:47 pm Post subject: |
|
|
visualopsins wrote:
Big joke flattens our mental lenses by reexamination, reinforcing here and rejecting there. Mental masturbation. _________________ ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony ILCE-7RM2, Spotmatics II, F, and ESII, Nikon P4
Lenses:
M42 Asahi Optical Co., Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200, Tele-Takumar 1:5.6/200, 1:6.3/300, Macro-Takumar 1:4/50, Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm, Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element), Super-Multi-Coated Fisheye-TAKUMAR 1:4/17, Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500, Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100, Super-Multi-Coated Bellows-TAKUMAR 1:4/100, SMC TAKUMAR 1:1.4/50, 1:1.8/55
M42 Carl Zeiss Jena Flektogon 2.4/35
Contax Carl Zeiss Vario-Sonnar T* 28-70mm F3.5-4.5
Pentax K-mount SMC PENTAX ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (51BB), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto (Kiron)
|
|
Back to top |
|
|
Pete
Joined: 01 Feb 2011 Posts: 240 Location: Denver, San Jose
|
Posted: Sun Oct 08, 2017 10:52 pm Post subject: |
|
|
Pete wrote:
My best 3D Pop lens is the Nikon 85 1.4 AF. I was noticing it before I knew what 3D Pop actually was.
I bought this lens new but I don't know if it classifies as a new or old school lens. _________________ "As God is my witness, I thought turkeys could fly!!!"
www.pete.3rdtrick.com |
|
Back to top |
|
|
Ray Parkhurst
Joined: 04 Jul 2011 Posts: 497 Location: Santa Clara, CA, USA
|
Posted: Mon Oct 09, 2017 3:01 am Post subject: |
|
|
Ray Parkhurst wrote:
All the images I've seen with "3D Pop" show "quick contrast reduction" as someone said above. What I've noticed about a couple of lenses I own is that they don't focus "linearly". They are lenses which are optimized for a particular magnification range (I am a macro photographer) and within a narrow range around that optimum magnification the lenses show a flatter focus vs magnification than outside the range.
Magnification translates to working distance, so that objects a certain working distance from such an optimized lens have this quality of stable focus. Lenses with "close range correction" like the 55/3.5 or 55/2.8 Micro Nikkors have moving elements to help to optimize the lens to improve performance at higher magnification. These moving elements improve performance at close range, but what is their effect on objects farther away? From what I've seen, they show good 3D Pop when used in their optimum range of around 0.5:1 magnification. Depth of field is getting shallow here, and the fall-off seems very quick, perhaps due to the CRC corrections.
Another lens with this quality is the Zeiss 74mm S-Planar. It is not a full-range macro lens, but one specifically optimized at 1:1. So its "CRC" is designed-in to the lens formula. It has the strongest nonlinearity of focus of any lens I own.
Applying this principle to a portrait lens, which is often where I see the most 3D Pop going on, if the lens is optimized for best performance at middle distances, and allowed to fall-off a bit especially toward infinity, wouldn't that create 3D Pop?
I'm also curious about the Nikon "defocus control" lenses. These seem to have a variable control to the focus fall-off. Do they show better 3D Pop? I have no experience with them but the principle seems to be consistent. _________________ ...See my Numismatic Photography website at: http://www.macrocoins.com
...Primary Studio Cameras: Sony A7Rm4 and Canon HRT2i
...Go-To studio lenses: Nikon 95mm and 105mm Printing-Nikkors; Schneider 85mm Macro-Varon; Nikon 5x, 10x, and 20x Measuring Microscope Objectives; Mitutoyo BD Plan Apo 50x Microscope Objective
...My Go-To Walkaround Lenses: Laowa 60mm Super Macro; Nikon 28-105D (in manual mode for macro); |
|
Back to top |
|
|
Pancolart
Joined: 04 Feb 2008 Posts: 3693 Location: Slovenia, EU
Expire: 2013-11-18
|
Posted: Mon Oct 09, 2017 7:39 am Post subject: |
|
|
Pancolart wrote:
marcusBMG wrote: |
3-D pop?
And this lens (guess) has only 3 elements. QED! |
Indeed the flower does stretches outward. I would account this effect to a bit shaken photo which really is helpful sometimes to achieve depth illusion. _________________ ---------------------------------
The Peculiar Apparatus Of Victorian Steampunk Photography: 100+ Genuine Steampunk Camera Designs https://www.amazon.com/dp/B0B92829NS |
|
Back to top |
|
|
kryss
Joined: 13 Sep 2009 Posts: 2169 Location: Canada
Expire: 2017-09-18
|
Posted: Mon Oct 09, 2017 12:37 pm Post subject: |
|
|
kryss wrote:
Pentax super tak 55mm f2 WO. Click for large.
Hasselblad CZJ 80mm f2.8 WO.
_________________ Do not trust Atoms....they make up everything. |
|
Back to top |
|
|
kds315*
Joined: 12 Mar 2008 Posts: 16541 Location: Weinheim, Germany
Expire: 2021-03-09
|
Posted: Mon Oct 09, 2017 4:07 pm Post subject: |
|
|
kds315* wrote:
Pancolart wrote: |
marcusBMG wrote: |
3-D pop?
And this lens (guess) has only 3 elements. QED! |
Indeed the flower does stretches outward. I would account this effect to a bit shaken photo which really is helpful sometimes to achieve depth illusion. |
Yep, indeed, it is the (well chosen) position of sharpness and the deviation from that across the flower which makes it "pop". I use this always in my own flower work...independent of which lens I use, but indeed there are some candidates
which doe this better than others. _________________ 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 |
|
|
folderholder
Joined: 24 Jan 2010 Posts: 102 Location: California
|
Posted: Mon Oct 09, 2017 4:07 pm Post subject: |
|
|
folderholder wrote:
I took that 24mm Yashica lens out on a walk yesterday to see what it can do, particularly in regards to colors and tonality. Here is a straight jpg from the camera (neutral setting, by the way) with no pp.
_________________ Best wishes,
Peter
www.pandacollector.com |
|
Back to top |
|
|
kds315*
Joined: 12 Mar 2008 Posts: 16541 Location: Weinheim, Germany
Expire: 2021-03-09
|
Posted: Mon Oct 09, 2017 4:10 pm Post subject: |
|
|
kds315* wrote:
Ray Parkhurst wrote: |
All the images I've seen with "3D Pop" show "quick contrast reduction" as someone said above. What I've noticed about a couple of lenses I own is that they don't focus "linearly". They are lenses which are optimized for a particular magnification range (I am a macro photographer) and within a narrow range around that optimum magnification the lenses show a flatter focus vs magnification than outside the range.
Magnification translates to working distance, so that objects a certain working distance from such an optimized lens have this quality of stable focus. Lenses with "close range correction" like the 55/3.5 or 55/2.8 Micro Nikkors have moving elements to help to optimize the lens to improve performance at higher magnification. These moving elements improve performance at close range, but what is their effect on objects farther away? From what I've seen, they show good 3D Pop when used in their optimum range of around 0.5:1 magnification. Depth of field is getting shallow here, and the fall-off seems very quick, perhaps due to the CRC corrections.
Another lens with this quality is the Zeiss 74mm S-Planar. It is not a full-range macro lens, but one specifically optimized at 1:1. So its "CRC" is designed-in to the lens formula. It has the strongest nonlinearity of focus of any lens I own.
Applying this principle to a portrait lens, which is often where I see the most 3D Pop going on, if the lens is optimized for best performance at middle distances, and allowed to fall-off a bit especially toward infinity, wouldn't that create 3D Pop?
I'm also curious about the Nikon "defocus control" lenses. These seem to have a variable control to the focus fall-off. Do they show better 3D Pop? I have no experience with them but the principle seems to be consistent. |
We're in the same game Ray, and I do agree with a lot what you have stated here: there are indeed specific lenses which show a specific "sharpness fall-off" and when and if that point of sharpness is selected well, it does generate then a cartain "3D pop". _________________ 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 |
|
|
|