09-04-2019, 06:33 PM
(09-04-2019, 04:33 PM)Brightcolours Wrote: You will not be able to measure images you take without software, which knows the chart you use. If you use freely available software, you can't compare results with Optical Limits MTF results for so many reasons that I don't feel like listing them all.
But you can compare this lens with other lenses you have (/access to).
A cost free (open source) MTF software collection is called MTF mapper:
https://sourceforge.net/p/mtfmapper/home/Home/
https://sourceforge.net/projects/mtfmapper/
Thank you very much, that's precisely what I was looking for. It's a shame that those results can't be compared to the reviews here, but as you say I can compare them to other lenses I have, so I can work with that.