I've used Light Impressions Mylar-D fold-lock sleeves for a few years for long-term negative storage in 120 & 4x5 sizes. Since Dupont has discontinued Mylar-D & LI has run out, I'm wondering if the polypropylene sleeves would work well enough. Can anyone tell me if the polypro sleeves are as clear as the old Mylar sleeves? I did get some of the new Mylar sleeves from LI a few weeks ago but returned them due to a defect (the flaps were glued shut) & I found them to be not as clear as the old Mylar-D sleeves were. I'm going to miss the old Mylar-D sleeves , since I really liked the bit of stiffness in that material that made it pretty easy to handle with gloves on. I'm guessing the polypro is a bit softer. Thanks.
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