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henry ticcy
Joined: 13 Sep 2022
Posts: 1
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 Posted: Fri Sep 23, 2022 7:41 am Post subject: Camera Lenses for GFX |
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henry ticcy wrote:
Hi，everyone
The news.
On September 23, AstrHori announced the official launch of the 55mm f/5.6 medium format lens.
This lens is specially designed for 100MP medium format mirrorless cameras, and is suitable for Fuji GFX medium format cameras. The price is only $329.
Are you interested? |
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visualopsins
Joined: 05 Mar 2009
Posts: 10543
Location: California
Expire: 2025-04-11
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| Posted: Fri Sep 23, 2022 3:32 pm Post subject: |
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visualopsins wrote:
https://astrhori.com/sy
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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 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)
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blotafton
Joined: 08 Aug 2013
Posts: 1554
Location: Sweden
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| Posted: Fri Sep 23, 2022 6:14 pm Post subject: Re: Camera Lenses for GFX |
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blotafton wrote:
Ask for a prototype, take some test shots and upload here  |
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D1N0
Joined: 07 Aug 2012
Posts: 2495
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| Posted: Fri Sep 23, 2022 7:27 pm Post subject: |
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D1N0 wrote:
https://youtu.be/vPfeXK_H8q0
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pentaxian |
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calvin83
Joined: 12 Apr 2009
Posts: 7554
Location: Hong Kong
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| Posted: Sat Sep 24, 2022 5:36 am Post subject: |
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calvin83 wrote:
55mm f/5.6, designed for 100MP, could be a pretty good lens for studio work.
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https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
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D1N0
Joined: 07 Aug 2012
Posts: 2495
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| Posted: Sat Sep 24, 2022 11:03 am Post subject: |
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D1N0 wrote:
Why not just pick up a Mamiya-Sekor C 55/2.8 Probably as sharp and as big not counting adapter, but F2.8 and cheaper and better built.
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pentaxian |
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KEO
Joined: 27 Sep 2018
Posts: 761
Location: USA
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| Posted: Sat Sep 24, 2022 6:38 pm Post subject: |
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KEO wrote:
Yes, a comparison of those two would be interesting.
A 55mm 5.6 could be very nice for macro, landscape, and other sorts of things where wide aperture is not a priority. It needs to be small and light (which it seems to be), sharp, and have low distortion.
It will have to compete with older adapted medium format lenses though.
Am I interested? Yes, I suppose so. It's a lens I would consider, at least. |
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calvin83
Joined: 12 Apr 2009
Posts: 7554
Location: Hong Kong
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| Posted: Sun Sep 25, 2022 6:02 am Post subject: |
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calvin83 wrote:
For such slow lens, it is not very difficult to make it sharp from edge to edge from wide open. The 5 blades aperture similar to the laowa which gives 10-pointed sun-stars. I am interested in comparing to the old medium format lens too.
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https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
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D1N0
Joined: 07 Aug 2012
Posts: 2495
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| Posted: Sun Sep 25, 2022 10:11 am Post subject: |
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D1N0 wrote:
Medium format 55mm lenses for 645 are the 35mm lenses for that format. They need a retrofocal design. Flange focal distance is 63.3mm for Mamiya 645.
Can't find a diagram for the Astrhori but it is 5 elements
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pentaxian |
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Gatorengineer64
Joined: 26 Oct 2017
Posts: 279
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| Posted: Fri Nov 11, 2022 1:32 pm Post subject: |
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Gatorengineer64 wrote:
Picked up 3 Bronica lenses for the GFX, havent played with them much but so far, like the rendering on the 40mm alot. Anyone have experience with the 100-200 zoom?
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A7R4, GFX50R and a bucket of mflenses |
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memetph2
Joined: 02 Dec 2021
Posts: 13
Location: Poland
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| Posted: Sat Nov 12, 2022 8:05 am Post subject: |
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memetph2 wrote:
| D1N0 wrote: |
Medium format 55mm lenses for 645 are the 35mm lenses for that format. They need a retrofocal design. Flange focal distance is 63.3mm for Mamiya 645.
Can't find a diagram for the Astrhori but it is 5 elements |
A GFX sensor is smaller than 4,5x6 . A 55mm on a GFX is the equivalent of a 44 mm on a FF.
The crop factor ( GFX/FF) is 1.26.
Their standard lens, 63mm f2.8, is the equivalent of a 50mmf2.2.
Regarding the « challenge » for lenses , 100 Mpx GFX has the pixel pitch of 61 Mpx FF and 50 Mpx GFX…. |
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