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Informations sur la compatibilité - ILCA-68. Monture A Objectifs à distance focale fixe.

Informations sur la compatibilité - ILCA-68

Data68 - index. Alibaba Group. Alibaba Group. Alibaba Group. Lenses under UV light on Behance. I tried, that various photographic lenses how will behave under UV light and got quite interesting results.

Lenses under UV light on Behance

I borrowed a few lenses from a really good friend and started to do some experiments. Some of the lenses fluorescence under UV light with blue/green/yellow/ect. color. Why do they glow under UV? Depending on the composition of the glass, it could easily contain mixtures a few rare earth elements, usually Lanthanum, Cerium and sometimes Thorium (yes, that radioactive thing at the bottom of the periodic table). These elements are added to the glass, since if they are present, the glass has a higher refractive index what means, that better optics could be made from them, with lower chromatic aberration. Google Traduction.

Produits russes

Graisses pour hélicoïdes de focus. Verre jauni. The following article is reproduced from the Spotmatic Group with the kind permission of the Author Ray Allen Click Here to Join the Spotmatic Group How to Cure Yellowing in Takumar 50mm f1.4 lenses.

Verre jauni

Remove the lens cap and wrap the uncapped lens, except the rear element, in aluminum foil and then set it on a window sill that faces towards the sun. Prop it up with something (like a rolled-up towel) so that it tilts in order to get the most sunlight into it. Productions » Fujinon 12.5mm f1.4 CF12.5A conversion. Clean aperture oil 28mm 2.8 Promaster Marexar. Ekoe camera. DIY Lens Mods. Anmol, who has a Navitar 50mm f0.95 lens, had a request to see the lens mount of the JML 50mm f0.95 that I modified to fit the G1 so that it could focus to infinity.

DIY Lens Mods

Converting the JML 50mm f0.95 C-Mount Lens to NEX E-Mount. I received a few inquiries regarding the conversion of the JML 50mm f0.95 lens to Sony E-Mount or M4/3 Mount.

Converting the JML 50mm f0.95 C-Mount Lens to NEX E-Mount

I wrote a post about it here, but I guess it was not very clear. So this time, I will do a second attempt, and hopefully it will be better than the last post. Cleaning aperture blades in Nikon NIKKOR AI 105mm 1:2.5. Kiev Contax Nikon RF Inner Mount Adapter to Sony NEX Precisely Made Excellent. Vivitar Lens Manufactuers. Nikon Lens Versions and Serial Nos. Serial Numbers | Specifications | Accessories | Nikon Lenses | Nikon Cameras | AI Conversions | For Sale | Home.

Nikon Lens Versions and Serial Nos

DEMONTAGE CARL ZEISS SONNAR 135 1/3.5 MC - Le blog M42 : Comparaisons et tests. Materiel pour le nettoyage / démontage d'objectifs - Le blog M42 : Comparaisons et tests. LEICA SUMMICRON 50mm Guide. See also: LEICA 50mm SUMMICRON basic information.

LEICA SUMMICRON 50mm Guide

Carl Zeiss Jena Tessar 50mm f2.8 (M42 mount) Servicing. CZJ Sonnar 2.8/180mm. My first try of quick photo-guide (BRunner's quick repair photo-guide ) .

CZJ Sonnar 2.8/180mm

This Sonnar is not hard to service (except optics and aperture, the front group is accessible only from front - you need to remove the nameplate ring) Sorry, no step-by-step guide, just considerable cases. I forgot to take shots of some screws, I try to describe it in comments. I present only the assembling process, dissassembling is just reverse. Put in place the screw which transfers motion of aperture ring to aperture blades.

Put in place the screws which holds the slide-ways shown in previous picture. Servicing The CZJ 135mm f/3.5 Lens. Introduction The Carl Zeiss Jena 135mm f/3.5 lens is a very popular manual/automatic M42 screw-mount lens that has discovered a new-found popularity amongst modern DSLR owners because it is a very high performance lens that is available cheaply in second hand camera shops and on ebay. I picked up a copy from a second hand camera shop for about 15 UK pounds and it arrived dusty and with sticky aperture blades. This article relates my experience in cleaning and servicing this remarkably simple lens. The drawback of buying a lens that is more than 20 years old is that it will often arrive in shabby condition.

The internal chambers between the lens elements are not 100% airtight so dust is likely to be present. Pentacon 29mm - M42. [Résolu] Opération sur Sony 16-105. Donc quelques photos du démontage :La partie optique de l'objectif La partie "externe" sans les bagues caoutchouc qui se retirent et se replacent facilement La patte de mise au point est replacée dans le fut une fois recollée. Attention aux contacts. Asahi Super Takumar 200mm f4 repair guide. Unlike smaller Asahi lenses, the Super-Takumar 200/4 is a rear-entry lens.

Asahi Super Takumar 200mm f4 repair guide

This means that it is not necessary to remove the name plate around the front element of the lens to gain access to the aperture blades, focussing ring and the aperture control lever. It is necessary however, to remove the front name plate in order gain access to the first three lens elements in order to clean them. This guide will show how to gain access to various parts of the lens. For the disassembly of this lens, you will need: A rubber glove (or some sort of item to provide friction for turning)The front cap of a 49mm filter sized Takumar (35,50,55,135mm etc). Pentax Super Takumar f/3.5 135mm. Pentax Super Takumar ƒ3.5 135mm by Stuart Willis Disassembly is from the front end. The lens comprises two optical groups. The main group and the rear element. There are two versions of this lens model and to a small extent the disassembly procedure varies after one has reached the point where the lens-mount module is separated fron the main focusing helix.

Disassembly of Maxxum AF 28mm Photo Gallery by Pete Ganzel at pbase.com. Disassembly for Repair Maxxum 35-105mm Zoom Photo Gallery by Pete Ganzel at pbase.com. Disassembly of Minolta Maxxum 28-135mm f/4 Zoom Lens Photo Gallery by Pete Ganzel at pbase.com. Dissasembly and Repair of Minolta Maxxum AF 50mm f/1.7 and f/1.4 Lenses Photo Gallery by Pete Ganzel at pbase.com. Partial Disassembly of Maxxum 50mm f/2.8 Macro Photo Gallery by Pete Ganzel at pbase.com. Dissassembly and Repair of the 58mm Rokkor Lenses Photo Gallery by Pete Ganzel at pbase.com. Disassembly of the Maxxum 70-210 f/4 Beercan Lens Photo Gallery by Pete Ganzel at pbase.com. Minolta Maxxum Dynax AF Lens Service Repair Manual Download photo - Pete Ganzel photos at pbase.com.

Because of huge increases in postage and unreliability of CDs and shipping damage, I now only send an e-mail link for down load of the pdf files.

Minolta Maxxum Dynax AF Lens Service Repair Manual Download photo - Pete Ganzel photos at pbase.com

I have reduced the cost to $19 and you have nearly immediate access to the information without waiting for shipment which may have taken up to two weeks with the CDs or SD cards. Compilation of 5 rare original service manuals for 30 AF Minolta Maxxum/ Dynax lenses and 2 Teleconverters. 693 pages in pdf format, one file for each lens, Acrobat 7, high quality scans. Includes exploded parts drawings, cross sections and part number lists, a section on reassembly and adjustment for aperture, collimation and sharpness for each lens, and description of focusing and zooming and lens circuit description.