Hoya 81A (A5581AGB) 55 mm Filter Light Balancing Camera 24066553126 | eBay
Hoya 58mm Standard 81A Warm Filter
Another slide film filter comparison : r/AnalogCommunity
Hoya HMC 55mm 81A Multi-Coated Warming Filter Made in Japan A-5581A-GB – EventCameras
Provia vs Ektachrome - Virginia Bluebells in 4x5 - Schneider-Symmar 180mm f5.6. Details in comments. Ektachrome is just too damn blue, and I think may even be a bit soft. It's been
HOYA 55mm HMC W2 Umber Warming Color Correction (Equivalent to 81A Fil – EventCameras
Hoya 81A 95mm Filter
Hoya 62MM 81A HMC Decrease Color Temperatures Filter
Hoya 81A (A7281AGB) 72 mm Filter 24066001160 | eBay