Valid

HG/T 2911-1997Photography. Source document microfilms. Determination of ISO speed and ISO average gradient (English PDF)

原件缩微摄影胶片 ISO感光度和ISO平均斜率的测定

Preview PDF

This is a limited preview

Buy now to download the full PDF (11 pages)

Need quotation for your management?

Get a formal quotation for HG/T 2911-1997 in 30 minutes.

Issued by

MIIT

Level / Type

National · Recommended

Issue date

May 23, 1997

Implementation date

October 1, 1997

Scope

HG/T 2911-1997 is the English-translated version of 原件缩微摄影胶片 ISO感光度和ISO平均斜率的测定.

HG/T 2911-1997 — Photography. Source document microfilms. Determination of ISO speed and ISO average gradient

Found what you need?

Document preview — HG/T 2911-1997

National Standard of the People's Republic of China

ICS: 37.040.20
Classification: G 81
Replacing: HG/T 2173-1991

What this standard covers1
Document data2

What this standard covers

This standard specifies the method for determination of ISO speed and ISO average gradient, which is determined mainly tungsten light source for exposure of the original microfilming with the first generation of black and white photographic negatives.

Document data

International classification (ICS): 37.040.20.

Chinese classification (CCS): G81.

Estimated length of the Chinese original: 17,141 words.

Adopted international standard: ISO 9848-1993, IDT.

Supersedes the earlier edition HG/T 2173-1991.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 11 pages — is available in the English PDF.

How to Download HG/T 2911-1997

1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.