Comparing sharpness of 16-80 to other lenses

Started 9 months ago | Discussions thread
Pritzl Senior Member • Posts: 1,477
Re: Questions

tokumeino wrote:

Just to understand better :

  1. How do 15 and 45 lw/mm translate in terms of number of pixels ?
  2. What are exactly Sagittal and Meridional ? Are really lenses performing so much differently regarding the orientation of lines to resolve ?

- 15 lpmm measure contrast and 45 lpmm measure resolution. Used to be 10 and 30 for older lenses.

- sagittal lines are lines radiating out from the centre. Meridional lines are perpendicular to them. A large difference between the two usually hints at poor (nervous) bokeh.

 Pritzl's gear list:Pritzl's gear list
Fujifilm X10 Canon EOS 70D Fujifilm X-T2 Canon EF 50mm F1.4 USM Tokina AT-X Pro 12-24mm f/4 DX II +9 more
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