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LittleAlex
Joined: 27 Nov 2008
Posts: 1741
Location: L'vov (Western Ukraine)
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 Posted: Wed Dec 07, 2022 9:25 pm Post subject: Mamiya 645 AF 75-150mm F/4.5 D vs 80mm f/2.8 AF |
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LittleAlex wrote:
Today arrived to me Mamiya 75-150mm F/4.5 D Lens For Mamiya 645AF system (obtained from KEH Camera Outlet for US $544.93, and the final price for me at the end of the destination in $670 - condition "like the new one")
which I immediately put to the “dirty test†with my only AF prime in that system Mamiya 80mm 2.8 AF 645.
I tested both at 4.5 and 8.0 diaphragms, using my Phase One 645DF+ with the P25 back, at ISO 100, upon the sturdy tripod.
There are the test photos in the full dimension (I didn’t check very mush the flatness and coherence of the camera and the wall, so the better is to look at the centre, and the right side of the picture).
1. Mamiya 75-150mm F/4.5 D, f/4.5
https://i.ibb.co/7QhVc5R/75-150-4-5.jpg
2. Mamiya 80mm 2.8, f/4.5
https://i.ibb.co/qMFFvNZ/80-4-5.jpg
3. Mamiya 75-150mm F/4.5 D, f/8.0
https://i.ibb.co/KzwD8Xm/75-150-8-0.jpg
4. Mamiya 80mm 2.8, f/8.0
https://i.ibb.co/HXP3P74/80-8-0.jpg
What was most sticking for me, that the 75-150mm lens has uniform resolution and sharpness through the field even at f/4.5, and was far away before 80mm 2.8 at that diaphragm. And even at f/8.0 it was steel much, much better. Especially at the borders.
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"Sharpness is a bourgeois concept" - © H. Cartier Bresson |
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LittleAlex
Joined: 27 Nov 2008
Posts: 1741
Location: L'vov (Western Ukraine)
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| Posted: Thu Dec 08, 2022 2:51 pm Post subject: |
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LittleAlex wrote:
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_________________
"Sharpness is a bourgeois concept" - © H. Cartier Bresson
Last edited by LittleAlex on Tue Jul 18, 2023 8:54 am; edited 1 time in total |
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LittleAlex
Joined: 27 Nov 2008
Posts: 1741
Location: L'vov (Western Ukraine)
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| Posted: Sun Dec 11, 2022 8:28 am Post subject: |
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LittleAlex wrote:
120mm 1/700 s; f/4,8; ISO 200
There is image in the full dimension:
https://i.ibb.co/dp5q8kP/CF016506-min.jpg
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LittleAlex
Joined: 27 Nov 2008
Posts: 1741
Location: L'vov (Western Ukraine)
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| Posted: Fri Dec 16, 2022 6:51 pm Post subject: |
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LittleAlex wrote:
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_________________
"Sharpness is a bourgeois concept" - © H. Cartier Bresson
Last edited by LittleAlex on Tue Jul 18, 2023 8:55 am; edited 1 time in total |
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LittleAlex
Joined: 27 Nov 2008
Posts: 1741
Location: L'vov (Western Ukraine)
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| Posted: Fri Dec 16, 2022 7:43 pm Post subject: |
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LittleAlex wrote:
Mamiya 75-150mm F/4.5 D vs Mamiya SEKOR MACRO MF 120mm F/4 in macro mode
Mamiya 75-150mm F/4.5 D, 130mm, 15,0 Ñ; f/11; ISO 50
There is the full size image:
https://i.ibb.co/c8QLdSv/CF016524-min.jpg
Mamiya SEKOR MACRO MF 120mm F/16.0 10,0 s; ISO 50
There is the full size image:
https://i.ibb.co/cxQz1kx/CF016529-min.jpg
_________________
"Sharpness is a bourgeois concept" - © H. Cartier Bresson |
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LittleAlex
Joined: 27 Nov 2008
Posts: 1741
Location: L'vov (Western Ukraine)
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| Posted: Tue Jul 11, 2023 12:28 pm Post subject: |
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LittleAlex wrote:
Mamiya 75-150mm F/4.5 D Lens f/4.5 ISO 100
There is the full size image:
https://i.ibb.co/N7MN0pt/CF016564-min.jpg
_________________
"Sharpness is a bourgeois concept" - © H. Cartier Bresson |
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stevemark
Joined: 29 Apr 2011
Posts: 4015
Location: Switzerland
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| Posted: Tue Jul 11, 2023 2:56 pm Post subject: |
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stevemark wrote:
| LittleAlex wrote: |
Mamiya 75-150mm F/4.5 D
1/4000 s; f/4,8; ISO 100
The sun was directly in the frame. Very strange results:
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The sunlght - focused by yor lens - is extremely bright. It completely overloads the sensor. A prolonged exposure will even destroy it.
S
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LittleAlex
Joined: 27 Nov 2008
Posts: 1741
Location: L'vov (Western Ukraine)
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| Posted: Tue Jul 11, 2023 10:56 pm Post subject: |
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LittleAlex wrote:
| stevemark wrote: |
The sunlght - focused by yor lens - is extremely bright.
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Well, it has to be anyway. Bat the shape is very strange indeed. I have never met anything like that in all my life.
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LittleAlex
Joined: 27 Nov 2008
Posts: 1741
Location: L'vov (Western Ukraine)
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| Posted: Sat Jul 15, 2023 7:13 pm Post subject: |
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LittleAlex wrote:
Mamiya 75-150mm F/4.5 D Lens f/4.5 1/45 s; ISO 100
There is the full size image:
https://i.ibb.co/cw5Tzq2/CF016551.jpg
_________________
"Sharpness is a bourgeois concept" - © H. Cartier Bresson |
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LittleAlex
Joined: 27 Nov 2008
Posts: 1741
Location: L'vov (Western Ukraine)
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| Posted: Sun Jul 16, 2023 8:14 pm Post subject: |
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LittleAlex wrote:
Mamiya 75-150mm F/4.5 D Lens f/4.5 1/15 s; ISO 100
There is the full size image:
https://i.ibb.co/5nMk17h/CF016556.jpg
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