Fast and lightweight, Psi is fully open-source and compatible with Windows, Linux, and macOS. Psi is a free instant messaging application designed for the XMPP network. Support of this plugin for Windows and macOS will be re-enabled.
1) All last builds of Psi for Windows and macOS were done without PsiMedia plugin (for audio and video calls). Features downloads forum development about us.
Psi is a multi-platform and standards-based instant messaging client available for Windows, Linux, Mac and more. Right pic shows close-up of the eyes dovetail mount with the ball bearing. The eyes will not mount in normal focusing range because the interlocking dovetail mount ball bearing can only be depressed in the close focusing range. Left pic shows lens mounted without 'eyes' close up attachment in normal focusing range, from infinity to one meter. The eyes must be removed before mounting or dismounting the lens. 7 meters with your M camera, the Dual Range Summicron remains your most convenient choice to this day. Using it in the close up range can be confusing, and so the detailed explanation below. A 50 DR had the honor of having the highest resolution ever tested by the now sorely missed American photography magazine, Modern Photography, at over 100 lines per mm. A popular lens in the user market, many photogs consider the DR their sharpest lens. The flat dovetail mounting base for the eyes gives the DR has a unique appearance among Leica lenses. The removable 'eyes' provide parallax corrected viewing in the close focus range.
The 50/2 Dual Range Summicron is one of the most interesting Leica M lenses with the closest rangefinder coupled focusing of any M lens.
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