Unfortunately your current device does not have features required to fully protect your sensitive data while shopping online. In order to protect your own security, we do not allow the placing of orders using insecure devices. To become our valued customer, please upgrade your Internet browser software to a more recent and secure version. We recommend using the latest version of Google Chrome or Mozilla Firefox, but any modern browser will enable you to shop with us. For additional information please feel free to contact our customer support on 1-800-342-5534 .

Free Ground Shipping for orders > $99 in contiguous USA only  (see details)

Peak 4X Anastigmatic Loupe PK-1990

This product is currently out of stock.

Do you want to be notified?

We’ll Email you when product is in stock

Do You Have One To sell?

Sell Your Gear To KEH and Get Cash

* Item pictured for illustrative purposes only, actual item not pictured.

Customers Also Bought

Peak 4X Anastigmatic Loupe PK-1990 Description


The 1990-4 Loupe with 4X magnifying power is specially designed to enable observers to simultaneously inspect the whole picture area of the standard micro-film size (i.e. 32mm x 45mm)or flat objects less than 58mm in diameter. The image observed through the loupe is critically sharp from the center to the edge of the image field, because of the careful optical correction of the loupe for the astigmatism and the curvature of the field as well as aberrations concerning the image of the central image. Ordinary magnifiers are corrected only for the central image. In this respect, this loupe is quite similar to anastigmatic photographic lenses, and is manufactured with the same care and precision. One point which distinguishes this loupe from photo-lenses is that the position of the effective pupil of the loupe has been placed as far as 25mm above the upper pole of the loupe; so that an observer can inspect the whole image field by merely moving his eyeball, without moving his face. This is an extremely advantageous feature for a micro-filmer, because it enables him to inspect a number of negatives very speedily and comfortably.


General information

Brand Name Peak

Customer Reviews