Good condition.
Very lightweight.
Coatings fair only. Uncoated and single and multicoating.
1980s ??
Internally clean.
118m. Crow on chimney pot. Feathers scraggy?, not normal sleek crow.
Crows stay put for 5 minutes, so much better subjects than magpies.
Centrally little or no CA. Bright overcast day 24C.
Quite a lot of CA moving to edge.
Curved field also near edge, can be partly refocused.
Pincushion. Will check.
Seems to be about 4mm exit pupil. Will check.
Although central resolution is good, I cannot hold it very steady because it is too lightweight. 12x45 Russian much steadier.
Very strange and rather nice bright thin blue ring all around field stop. Most odd. Why is this seen?
For a birdwatcher probably good as minimal weight, but needs a tree or something to brace it.
Very lightweight.
Coatings fair only. Uncoated and single and multicoating.
1980s ??
Internally clean.
118m. Crow on chimney pot. Feathers scraggy?, not normal sleek crow.
Crows stay put for 5 minutes, so much better subjects than magpies.
Centrally little or no CA. Bright overcast day 24C.
Quite a lot of CA moving to edge.
Curved field also near edge, can be partly refocused.
Pincushion. Will check.
Seems to be about 4mm exit pupil. Will check.
Although central resolution is good, I cannot hold it very steady because it is too lightweight. 12x45 Russian much steadier.
Very strange and rather nice bright thin blue ring all around field stop. Most odd. Why is this seen?
For a birdwatcher probably good as minimal weight, but needs a tree or something to brace it.