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You are here: Home / The Last Word / NEX-7 — Lens testing for purple corners

NEX-7 — Lens testing for purple corners

January 5, 2012 JimK Leave a Comment

I’ve now completed making the test images for the following lenses, using the methodology of the previous post:

  • Sony 16mm f/2.8 E mount
  • Leica Tri-Elmar 16/18/21mm f/4
  • Leica Super-Elmar 18mm f/3.8 ASPH
  • Leica Elmar 24mm f/3.8 ASPH
  • Leica Elmarit 24mm f/2.8 ASPH
  • Zeiss Biogon 35mm f/2
  • Leica Summilux ASPH 50mm f/1.4

In this post, I’ll report the measurements from the test images, at the four corners, as measured as CIELab differences from the center readings.

Sony 16mm f/2.8 E mount

UR LR LL UL
L* -23 -24 -23 -24
a* 2 2 3 3
b* -4 -1 -2 -4

Leica Tri-Elmar 16/18/21mm f/4 16mm

UR LR LL UL
L* -12 -11 -8 -11
a* 1 1 0 0
b* 1 -5 -6 -1

 

Leica Tri-Elmar 16/18/21mm f/4 18mm

UR LR LL UL
L* -10 -10 -7 -9
a* 1 1 0 0
b* -1 -4 -6 -1

 

Leica Tri-Elmar 16/18/21mm f/4 21mm

UR LR LL UL
L* -9 -9 -8 -8
a* 1 1 0 0
b* 0 -2 -5 -3

Leica Super-Elmar 18mm f/3.8 ASPH

UR LR LL UL
L* -17 -16 -14 -16
a* 5 5 3 3
b* -4 -6 -7 -2

Leica Elmar 24mm f/3.8 ASPH

UR LR LL UL
L* -14 -15 -13 -15
a* 5 4 2 2
b* -8 -7 -5 -3

Leica Elmarit 24mm f/2.8 ASPH

UR LR LL UL
L* -12 -11 -11 -11
a* 2 2 1 1
b* -3 -4 -5 -2

Zeiss Biogon 35mm f/2

UR LR LL UL
L* -8 -7 -7 -8
a* 2 2 1 1
b* -2 -3 -3 -1

Leica Summilux ASPH 50mm f/1.4

UR LR LL UL
L* -5 -5 -4 -5
a* 1 1 0 0
b* -1 -2 -2 -1

Comments in the next post.

 

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