Store your photographic materials safely by using Archival White Paper from Archival Methods as a form of interleaving paper or protective cover for your media. The paper is made from alpha cellulose with 25% cotton fiber content and is calcium carbonate buffered as well as both acid and lignin free for preventing degradation of your photographs. It has a basis weight of 120 gsm and passes the Photographic Activity Test (PAT) as indicated in ISO IT 18916. Additionally, it was made in the USA.

Alpha Cellulose and Cotton Fiber Base    Safely Store Photographic Materials    Passes Photographic Activity Test    Basis Weight: 120 gsm    Calcium Carbonate Buffered    Acid and Lignin Free    Made in the USA

Made from alpha cellulose wood pulp with 25% cotton fiber content to create a durable, white paper with a basis weight of 120 gsm.

Uses calcium carbonate as a buffer with 2-3% alkaline reserve, measured to a pH of 9 ±0.5 and being acid free.

This media passes the PAT (Photographic Activity Test) as indicated by ISO IT 18916, which is formerly ISO 14523 ANSI IT9.16.

Sulfur content is measured to less than 0.0008% reducible sulfur.

Lignin content is measured to TAPPI 236 cm-85 standards and has a Kappa number of less than five.

Related Questions and Answers

Q: 1. How well does this work on a Nikon Z6II and an FTXII adapter?

A: Yes, Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary Lens for Nikon F is fully compatible with Nikon FTZ II Mount Adapter and Nikon Z6 II Mirrorless Camera. The lens function the same as native Nikon F-mount lenses.

Q: 2. Can this lens be used in full frame mode together with the mc-11 adapter on a Sony A7lll?

A: Yes this lens is optimized for a full frame sensor, so it can be used in full frame mode together with the MC-11 when mounted on the A7 III.

Q: 3. Would this lens work on a Canon T6?

A: Yes it will, it will provide a 160-640mm equivalent focal length range.

Q: 4. Will this lens work on a Nikon D3200?,when I click on compatibility 3200 isn't there.

A: According to Sigma's compatibility list located at https://www.sigma-global.com/en/lenses/cas/product/popups/lenses-correspondence/, it is compatible.

Q: 5. Is the lens hood reversible for more compact storage with hood attached? Thanks.

A: Yes it is.

Q: 6. Will this lens fit on Sony A6400 ?

A: The Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary Lens for Canon EF with the includes MC-11 Mount Converter/ Lens Adapter for Sony E is compatible with the Sony a6400.

Q: 7. Which lens is better overall (build quality, weather sealing, image quality, focus and value) the Sigma AF 150-600 F/5-6.3 DG OS HSM C or the Sigma 100 - 400mm F5-6.3 DG OS C?

A: Both lenses are under the Sigma Contemporary line. They have the same construction. Optical quality on the Sigma 150-600mm f/5-6.3 DG OS HSM Contemporary Lens slightly higher considering you have a longer zoom range.

Q: 8. How important is it to purchase the USB Dock for use with this lens?

A: Not essential, but very useful. Once you buy one of the Global lenses, you are going to acquire more. Eventually you'll get one that needs significant micro-adjustment. Wait for the deal that includes one.

Q: 9. Is a lens case included?

A: Sadly there is no lens case included in the box when you purchase this lens.

Q: 10. How's the autofocus speed and accuracy and the OS ? As many reviews says these are the thumbs down.

A: I think it's pretty good actually. I use mine for taking bird photos mostly and I'm happy the speed of autofocus and the overall results.