Another Minolta New MD 28mm F2.8 5×5 lens review

After getting a new lens, I always take a few technical shots to understand its strengths and weaknesses – usually it helps me a lot to start using unknown lens with much less of doubt. One day I decided that my data might be interesting for someone else and this site has been made.

MD_28_2_8_5x5_DSC00526.jpg

Minolta New-MD (MD III) 28mm 1:2.8 (5 lenses in 5 groups) parameters:

minolta.eazypix.de index 52
Name engraved on lens MD
f[mm] 28
A max [1/f] 2,8
A min[1/f] 22
Lens design [el.] 5
Lens design [gr.] 5
Filter thread Ø front(rear)[mm] 49
Lens Shade clip-in
closefocus[m/ft] 0.3/1
Dimension Ø x length [mm] 64×43
Weight[g] 185
Year 1983
Style MD III
Code No. (ROKKOR-X) or Order No. 590-910

Lens exterior:

Tested copy was in bad condition of exterior, but is good optically. Later I got another copy, but this review is based on older lens, because this material is one of the firsts published on this site. Newer copy is taking part in articles which have been published later then middle of 2018.

(Please, forgive me the dust on the lens, I never have the patience to clean objects for close-up photo sessions)

Yes, this lens looks like a survivor after nuclear war. It wasn’t easy task to repair and return it to fully working condition.


Lens code name – Yuzu Koyama 小山 柚子

Yuzu Koyama – Yuzu is a third year student from Ooarai Girls High School. She serves as the vice president of the school’s Student Council. She’s also the driver of Turtle Team.

 


Resolution – close distance:

Test description: target is a 10×15 cm picture (printed, glossy photo paper), fixed on the wall by scotch. Distance – about 10% longer than minimal focus distance marked on the lens. Camera Sony A7II (24mpx, full frame) was fixed on the tripod and managed remotely with computer display as a viewfinder. All groups of shots were repeated 9 times for every target position on all apertures from fully opened up to F16, ISO-100, WB – same for all shots. SteadyShot – OFF. Focus was manually corrected for each shot. After all needed shots have been taken for one target position – I moved  the target to the next place.

test_scene_view300x200

Main idea – to exclude the field curvature affect on so close distance.

Of course, I can’t be absolutely accurate, but so many repeats of shots – 4 for corners, 2 for long side, 2 for short side are giving me insurance that test results are correct.

Finally, pictures were converted from ARW-files in Capture One with default settings (Some single files have a slight light correction, for better visual convenience in comparison), then cropped for 300×200 px elements, combined into diagrams and exported into JPEG-files.

Scene preview:

_MD_28_2_8_5_5_F_preview2

Test results (selected version, easy to compare – 4 positions):

28_2_8_5x5_close_dist_test_SHORT.jpg

Test results (full version – all 9 positions):

28_2_8_5x5_close_dist_test_FULL.jpg


Resolution – long distance:

Test description: Camera Sony A7II (24mpx, full frame) was fixed on the tripod and managed remotely with computer display as a viewfinder. Targets (buildings) were fixed by gravity power on the distances in more than 200 meters. All shots have been taken with apertures from fully opened up to F16. ISO-100. Shutter Speed – depends on light (camera A-mode), WB – fixed and the same for all shots. SteadyShot – OFF. Focus was manually corrected for each shot to exclude focus-shift affect.

Finally, pictures were converted from ARW-files in Capture One with default settings (Some single files have a slight light correction, for better visual convenience in comparison), then were cropped for 300×200 px elements, combined into diagrams and exported into JPEG-files.

Scene preview:

_MD_28_2_8_5x5_F_longdist_scene2

Test results:

28_2_8_5x5_LONGDIST.jpg


Vignetting:

(frames scaled – 300×200)


Geometric distortion:

(frame scaled 1200×800)


Coma aberrations:

(100% crops – 300×200)


Chromatic aberrations:

(100% crops – 300×200)


Close distance bokeh:

Test conditions: lens was focused on to minimal distance (0.25m), plants were fixed in 2m distance from camera in front of the window with bright light from outside.

(frame scaled 1200×800, bokeh covers the frame partially)


Long distance bokeh:

Test conditions: lens was focused on half distance on the scale (0.5m), houses were fixed in infinity distance on the ground.

(frame scaled 1200×800)


Light dots bokeh:

Test conditions: lens was focused on to minimal distance + 10% of scale (about 0.27m), diodes were  fixed in 2m distance at the dark background.

(frame scaled 1200×800)


My overall conclusion about the Minolta N-MD 28mm 1:2.8F (5 lenses in 5 groups) (Minolta MD III 28mm F/2.8 (5 lenses in 5 groups)):

Don’t believe the rumors about different performances between this lens with 5×5 design and older 7×7 design – there no noticeable differences in any conditions. Really I can say that both are the same. Do you need a cheap 28mm for occasional photos with this angle of view? Take any of MD 28mm F2.8 with no doubt. As previous lens it works fine with auto-focus adapters like Techart-Pro, and still convenient enough if you prefer manual focusing.


This lens took part in battles:

MD28mmAll_Battle__Avatar

MDZ2435_MD2428_MD2828x5_MD3528_Battle__Avatar

MDZ2450_MD2428_MD2828x5_MD3528_MD5014_Battle__Avatar

MD28mmAll_Battle_Round2_Avatar.png

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