Who has compared spotters using resolution charts ?

[Grassymike]

Curious if anyone has used resolution charts to determine how much better one spotting scope is than another. I have four spotters currently and want to extensively compare them to help sort out which ones to keep. I have only ever seen the charts up in sporting goods stores. Wondering if someone has used charts which one and where to get them. I did a quick search online and there seems to be a lot of different charts.

 

[Alex Genereux]

 

[Alex Genereux]

They don’t show resolution charts but they are looking at them when they are comparing scopes.

 

[BBob]

Definitely. They certainly aren't the only criteria I'd go by though. Time in the field testing also counts as much or more to me but the chart can weed out non-starters.

Edmunds Optics has an economical chart.

Resolving Power Chart | Edmund Optics

Resolving Power Chart provides USAF pattern printed in black, red, yellow, and blue to test for chromatic aberration are available at Edmund Optics.

www.edmundoptics.com