Front element filter size on Kodak Portrait 305mm F4.8 lens?

[LFLarry]

I am traveling for the next couple of weeks and don't have physical access to my Kodak Portrait 305mm F4.8 lens.

Anyone here know what size filter it takes?

This brings up another issue as well. I am not clear how to determine the size of a filter based on its measurement. Any help here is appreciated.

Thanks in advance.

[BrianShaw]

Page 6 states Series IX (9) filters.

http://www.cameraeccentric.com/html/info/kodak_1.html

https://www.apotelyt.com/photo-accessory/series-filters

Measure the outside diameter of your lens to determine which adapter will fit best. Unfortunately I don’t have one to measure.

[Pere Casals]

It uses Series IX Kodak Filter : http://www.cameraeccentric.com/html/info/kodak_1.html

Search here "Filter", and see type IX: http://throughavintagelens.com/2013/...ilter-systems/ Retaining ring is 87.5mm

[LFLarry]

WOW! Thank you so much!! I had no idea and I really appreciate your help!

Page 6 states Series IX (9) filters.

http://www.cameraeccentric.com/html/info/kodak_1.html

https://www.apotelyt.com/photo-accessory/series-filters

Measure the outside diameter of your lens to determine which adapter will fit best. Unfortunately I don’t have one to measure.

[LFLarry]

Thank you very much Pere! This is extremely helpful!!

It uses Series IX Kodak Filter : http://www.cameraeccentric.com/html/info/kodak_1.html

Search here "Filter", and see type IX: http://throughavintagelens.com/2013/...ilter-systems/ Retaining ring is 87.5mm