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revers
Joined: 13 May 2010
Posts: 574
Location: In the country just north of Toronto Canada
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 Posted: Thu Jul 08, 2010 2:54 pm Post subject: As requested by Blue |
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revers wrote:
Same shot with each lens wide open & hoods on. The focus is on the yellow flower to the right of centre.
1. Minolta 50/1.4
2. Minolta 55/1.7
3. Super Takumar 55/1.8
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Ron
Olympus OM-D E-M5, 14-42 & 45/1.8.
Panasonic G1, GF1, 14-45, 45-200 & various legacy lenses.
Canon S5, Sony 1.7 Tele-converter & Raynox DCR 150 Macro converter. |
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kds315*
Joined: 12 Mar 2008
Posts: 16628
Location: Weinheim, Germany
Expire: 2021-03-09
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| Posted: Thu Jul 08, 2010 3:48 pm Post subject: |
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kds315* wrote:
focus is or was meant to be? I can't see a sharp focus spot (windy?)
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Klaus - Admin
"S'il vient a point, me souviendra" [Thomas Bohier (1460-1523)]
http://www.macrolenses.de for macro and special lens info
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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
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AhamB
Joined: 22 Jun 2008
Posts: 733
Location: Germany
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| Posted: Thu Jul 08, 2010 4:27 pm Post subject: |
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AhamB wrote:
It's on the stem of the flower in all three.
The 55/1.7 wins in the bokeh department, imo. |
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visualopsins
Joined: 05 Mar 2009
Posts: 10959
Location: California
Expire: 2025-04-11
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| Posted: Thu Jul 08, 2010 4:46 pm Post subject: |
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visualopsins wrote:
The 1.7/55 photo is in focus a little back of yellow flower, that is why this photo appears sharpest imo
The 1.4/50 an 1.8/55 photos are both slightly front-focused. Guessing 1.8/55 photo would be sharpest if it had same focus point as 1.7/55.
Of these, the 1.8/55 is sharpest and has 'busiest' bokeh (for sure, wow that bokeh is b-u-s-y!)
1.7/55 bokeh is most 'smooth' and 'creamy'.
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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-A 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 (151B), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto (Kiron)
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Nesster
Joined: 24 Apr 2008
Posts: 5883
Location: NJ, USA
Expire: 2014-02-20
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| Posted: Thu Jul 08, 2010 4:54 pm Post subject: |
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Nesster wrote:
The 1.7 seems to have the best contrast wide open as well
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AhamB
Joined: 22 Jun 2008
Posts: 733
Location: Germany
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| Posted: Thu Jul 08, 2010 5:28 pm Post subject: |
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AhamB wrote:
Exposures are not identical so contrast is difficult to judge. |
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revers
Joined: 13 May 2010
Posts: 574
Location: In the country just north of Toronto Canada
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| Posted: Thu Jul 08, 2010 7:56 pm Post subject: |
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revers wrote:
The subject matter is not the best but I had to find something in the shade to shoot wide open. I tried in the open & with minimum ISO (100) & highest shutter speed (1/4000s) I was way over exposed. 
Here are crops of the flowers I focused on.
1. Min 50/1.4
2. Min 55/1.7
3. Tak 55/1.8
The flowers were about 10' (3M) away.
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Ron
Olympus OM-D E-M5, 14-42 & 45/1.8.
Panasonic G1, GF1, 14-45, 45-200 & various legacy lenses.
Canon S5, Sony 1.7 Tele-converter & Raynox DCR 150 Macro converter. |
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Blue
Joined: 26 Jul 2008
Posts: 304
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| Posted: Fri Jul 09, 2010 3:09 am Post subject: |
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Blue wrote:
Thanks for the effort revers! The 1st 3 were actually what I was after since I wanted to see the OOF of the lenses, especially those Minolta glasses since I have I don't know how many 55mm Taks. 
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Pentax: K, H2, H3, S3, SV (late & early), SV black, Spot F, K2 chrome, K2 black, ME F, SuperProgram, 6x7, Auto 110, Asahiflex IIB late
Pentax "modern": MZ-3, *istD, K200d, K20d
Mamiya: C3 TLR, NC1000
Canon: EOS 10s, AE-1
Chinon: CP-7m
IKON: Contax D, Praktiflex FX & Victar 50mm f2.9
Contessa-Nettel Piccolette - 7.5 cm Tessar & Compur shutter
Rangefinders: Argus C4 and Ricoh Five-One-Nine |
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pat donnelly
Joined: 19 Jan 2010
Posts: 666
Location: Brisbane, Australia
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| Posted: Sat Jul 10, 2010 12:02 pm Post subject: Bouquet |
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pat donnelly wrote:
Very useful and surprising result.
Thank you! |
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woodrim
Joined: 14 Jan 2010
Posts: 4060
Location: Charleston
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| Posted: Sat Jul 10, 2010 2:18 pm Post subject: |
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woodrim wrote:
I do not understand the value of comparing lenses shot wide open when apertures are not equal, but I can appreciate individually assessing the lenses at their max apertures. Wouldn't one expect a smaller opening to outperform a larger one? A more useful comparison would be to shoot each lens at the first common aperture, then know that the faster lenses give you that with a brighter viewfinder.
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Woodrim |
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revers
Joined: 13 May 2010
Posts: 574
Location: In the country just north of Toronto Canada
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| Posted: Sat Jul 10, 2010 6:07 pm Post subject: |
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revers wrote:
| woodrim wrote: |
| I do not understand the value of comparing lenses shot wide open when apertures are not equal, but I can appreciate individually assessing the lenses at their max apertures. Wouldn't one expect a smaller opening to outperform a larger one? A more useful comparison would be to shoot each lens at the first common aperture, then know that the faster lenses give you that with a brighter viewfinder. |
That is basically what I did in the thread that led to this requested one. Only I bumped up one stop so no lens was @ max aperture.
http://forum.mflenses.com/seven-50s-compared-t30078.html
_________________
Ron
Olympus OM-D E-M5, 14-42 & 45/1.8.
Panasonic G1, GF1, 14-45, 45-200 & various legacy lenses.
Canon S5, Sony 1.7 Tele-converter & Raynox DCR 150 Macro converter. |
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woodrim
Joined: 14 Jan 2010
Posts: 4060
Location: Charleston
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| Posted: Sat Jul 10, 2010 6:25 pm Post subject: |
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woodrim wrote:
Ron: I wasn't saying that there isn't value in assessing a lens' performance at fully open, just that it doesn't make sense to compare unlike apertures.
You actually bumped it up more than two stops on all lenses except the Macro. f/2 might have been a good choice for comparison leaving the under-performing macro out. All the same, I appreciate your efforts.
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Woodrim |
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Blue
Joined: 26 Jul 2008
Posts: 304
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| Posted: Sat Jul 10, 2010 8:14 pm Post subject: |
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Blue wrote:
| woodrim wrote: |
| I do not understand the value of comparing lenses shot wide open when apertures are not equal, but I can appreciate individually assessing the lenses at their max apertures. Wouldn't one expect a smaller opening to outperform a larger one? A more useful comparison would be to shoot each lens at the first common aperture, then know that the faster lenses give you that with a brighter viewfinder. |
I asked him to do it to see the out of focus areas especially on the Minolta f1.4 lens and f1.7 lenses. I have at least 8 different Auto-Tak, Super Tak, and SMC tak 55mm f1.8 lenses but was curious about the Minolta glass.
There is value at looking at them wide open and both at f1.7, f2 etc. it just depends on why. I was actually not just looking at the focus spot, but the oof!!!
_________________
Pentax: K, H2, H3, S3, SV (late & early), SV black, Spot F, K2 chrome, K2 black, ME F, SuperProgram, 6x7, Auto 110, Asahiflex IIB late
Pentax "modern": MZ-3, *istD, K200d, K20d
Mamiya: C3 TLR, NC1000
Canon: EOS 10s, AE-1
Chinon: CP-7m
IKON: Contax D, Praktiflex FX & Victar 50mm f2.9
Contessa-Nettel Piccolette - 7.5 cm Tessar & Compur shutter
Rangefinders: Argus C4 and Ricoh Five-One-Nine |
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walter g
Joined: 20 Feb 2010
Posts: 2463
Location: NC, USA
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| Posted: Sun Jul 11, 2010 7:02 pm Post subject: |
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walter g wrote:
Ron, Thanks.
I was planning on buying a Minolta 55 1.7, and was really curious about it's performance.
Thanks to your shots, I will be buying one for futher testing.
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Main cameras
Panasonic G5,Nikon J1,Pentax Q10,Sony Nex 6
Minolta MC W SI 2.5/28, MD 2.8/28, MC W SG 3.5/28, MC Celtic 3.5/28, MC W HG 2.8/35, MD Celtic 2.8/35, QE 4/35, Rokkor X 2/45, MC Rokkor X PG 1.4/50, MC Rokkor X PG 1.7/50, MD Rokkor X 1.7/50, MD 2/50, MC Rokkor PF 1.7/55, MC Rokkor PF 1.9/55, Auto Tele Rokkor PG 2.8/135, MC Tele Rokkor QD 3.5/135, TC 4/135, MC Celtic 4/200, MC Tele Rokkor PE 4.5/200
MD 28-70 f3.5-4.8, MD Macro 35-70 f3.5, Md 70-210 f4, MD Rokkor X 75-200 f4.5, MD 100-200 f5.6
Nikon Nikkor 4/20, O Auto 2/35, S Auto 1.4/50..... Miranda Auto 2.8/28, Auto 2.8/35, Auto 1.4/50, Auto EC 1.4/50, Auto 1.8/50, Auto EC 1.8/50,Auto 1.9/50, Auto 3.5/135
Various Soligor,Sun,Fujita,Komura,Spitatone, etc. Lenses
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