Konica Minolta 7D Lens Tests

On the following tests I document some lens test I did with the 7D and various lenses.

The results should not be taken as absolute numbers because these depend on the test environment (JPG or RAW, sharpening setting etc.). But they may give some information about relative behavior (e.g. how do different appertures compare to each other). Also the test results should not be taken too serious. Its still the contents which makes a good picture and not the lens/camera. On the other hand it is also interesting to know the limitation and strengths of the equipment.

Testresults (will be filled over time):

• Minolta AF 24mm f/2.8
• Minolta AF 50mm f/1.7
• Minolta AF 85mm f/1.4 G
• Minolta AF 100mm f/2.8 MACRO 
• Minolta AF 200mm f/4 MACRO APO G
• Minolta AF 200mm f/2.8 APO G
• Minolta 4 / 35-70 mm
• Konica-Minolta AF DT 18-70mm f/3.5-5.6 (D)
• Konica-Minolta AF 28-75mm f/2.8 (D)
• Minolta AF 70 - 200mm f/2.8 Apo G(D)SSM
• Minolta AF 75-300mm f/4.5-5.6
• Tamron SP AF300MM F/2.8 LD (IF)
• Tamron 1.4x Teleconverter
• Tamron 2x Teleconverter
• Sigma 4.5-5.6 / 12-24 mm DG EX

! Important planned improvement: Camera will be moved by some steps forward and backward to cover MF tolerances which degrade open aperture results

Testsetup & procedure:

The procedure was the following:

• Align camera in 90° vertically and horizontally to the target on tripod.
• The light was two tungsten lights at an angle of about 45°.
• Manual Focus with 2x view finder enlargement
• Take a picture for every full step of aperture.
• Take RAW file and develop highest quality JPG with CaptureOne 3.7.1
• CaptureOne: Default settings, but white balance adjusted to gray card, sharpening switched off
  Because sharpening is switched off the results can not be taken as absolute performance values compared to other cameras.
• Evaluated in Imatest 1.4.5.
• For the resolution test a part nearly in the center of the image was used (~ 15 % off center to the top).

Picture of target (red rectangle was the area the resolution was calculated from).

For more information on Imatest go to www.imatest.com.

For further Infos please send an Email to info@tk-imaging.de