![]() As can be seen in Figure 7, the innerīarrel has four grooves, so it aligns again with the holders everyĤ) If it is not possible to turn a full quarter turn and the groovesĪre not yet aligned with the holders, rotate the focus ring to a The idea is to rotate a full quarter turn beyond Since the inner barrel is free at this point, you could seize the opportunityĪnd screw it off completely, clean the helicoids, put new grease, etc.ģ) Rotate the inner barrel so it goes further into the outerīarrel (don't remember if it needs to be turned clockwise or I put some grease to reduce the stress on the remaining one. Fortunately, the other was enough to keep the mechanism There are two holders bend both, just enoughīE VERY CAREFUL at step 2, since the holders may break instead of bend! I haveīroken one of them. If in doubt, go to infinite and readjust at step 4.Ģ) Insert a screwdriver between the inner barrel groove and the golden holder circled This is the basis of ourġ) Rotate the focus ring to almost infinite. Moved further back, without any physical modification. The helicoid has some leeway beyond infinite. Lets the inner barrel go back and forth, thus adjusting the focus.īy the way, the holder in Figure 7 is greased because I took the picture after the focus adjustment. To rotate by two holders, one of them circled red at Figure 7. The inner core (silver) is held in place only by the helicoid, and is prevented ![]() Circled in red: the holder that keeps the inner barrel from rotating, while allowing it to move back and forth. Screwdriver found inside the corkscrew of a Swiss Army knife.įirst thing is to open the lens front, unscrewing the front ring (Figure 1)Īnd removing the filter holder ring (kept in place by 3 screws).įigure 7: Outer barrel (black), focus helicoid (golden), inner barrel (silver). ![]() For the smallest screws, I used the small I think that the focus ring can be loosen from the helicoid and recalibrated,īut I only paid attention to the relevant bolts when I was already remountingĭismantling the lens is very easy. Some camera feature, like Nikon's rangefinder and/or the in-focus yellow point. This changes the relationship between the distance scale painted in focus ringĪnd the real focus distance, but this is not a problem if you can focus using Suggested that lens core could be "screwed" further into the lens. Since I don't have metal working tools, I followed a hint in the Internet that The lens was modified so the core can move further back. Some people shorten the outer barrel body,įigure 0: Lens back, with core protruding outside when at infinity focus. Of allowing the core of the lens move further back, into the mirror chamber.Ī single milimeter is enough. Lens but they degrade the image, or at least they disturb the bokeh.īut are ways to make the Helios 44M to focus to longer distances in Nikon. ![]() The lens cannot focus to infinity, since Nikon F distance from flange to There are M42Īdapters for most other SLR mounts, but Nikon F adapter brings a problem: Most of these lenses were made for the M42 screw mount. It is famous by its rough, all-metal construction and the Seven versions of this lens have been produced mine is the sixth version The Helios 44M is a normal fast lens manufactured in the Soviet Union. Process since there are many versions of the 44M, and the tutorial WARNING: in spite of extensive adjustments, my lens still cannotįocus to infinity it is short-sighted to about 6m. ![]()
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