roger_livesey

<p>Thanks Alan and Lex. I did think of emailing John Hermanson but did not for just the reasons you gave Lex. He did respond very helpfully to a post I made on this forum quite a while ago and I respect his advice about taking apart OMs, particularly the 4/4T - ie, "don't" (and for me the dementix exploded views show exactly why that is good advice). But if it is a simple contact problem which is easily accessible I should be able to do it. I did try searching for anything on my problem but didn't turn up anything. </p>

<p>I have now had the bottom plate off. It looks as though the power lead from the batteries (-ve) is green but I can't be sure without removing the battery case and I'm reluctant to do that just to find out as it has other 'bits' attached to it. Unfortunately the very detailed dementix diagrams don't show something as simple as this. Can anybody tell me? I'm quite able to do something 'simple', like remaking a corroded connection, but no more than that. The other leads which can clearly be seen in the bottom area are white and red.</p>

<p>Thanks John. I'll have a go at taking the bottom plate off tomorrow and see what I find. I'll let you know.</p>

<p>A recently acquired, rather battered, OM4Ti works fine on the mechanical speeds (mirror was locked up when I got it but turning to 1/60 solved that). However, attempting to use higher speeds the mirror locks up (good batteries). Battery check doesn't make a sound and there's no sign of the meter in the viewfinder - but ...<br> When batteries are being inserted and the cap 'wiggled about' there's occasionally a short beep and sometimes even a brief flash of the red light on the front, which seems to suggest a bad contact somewhere. After reading previous posts on this forum I cleaned the battery compartment cap, the threads inside the compartment, the batteries themselves, etc, but no luck. Is there a contact, wire or something under the bottom plate which could be loose, corroded or something?<br> I have an OM4 which works fine except for the spot/dark/light buttons etc which do not work. I decided not to risk taking the top cover of that off but the bottom on this or the Ti doesn't seem to give rise to the same problems so I'd be happier to take that off.<br> Any suggestions?</p>

<p>I'm trying to resurrect my Mamiya Press system (as a way back to MF and film), which hasn't been used for a number of years. As I've forgotten a lot I've been reading through internet a lot over the past few months.<br> I've seen several references to the 'fact' that Press lenses were 'synchronised' to the body, so that focus wouldn't necessarily be correct if a lens not originally sold with that body was fitted, with adjustment screws on both lens and body, these often being 'secured' with lacquer or something. Looking at my lenses (50mm, 65mm, 90mm, 100mm, 150mm and 250mm), the only ones I can see which might have some kind of adjustment for the rangefinder coupling ring on the lens are the 65mm (in this case 'sector' rather than a complete ring). I have two of these and the part on which the rangefinder 'cam' rides is secured with two screws through two slots, which suggests the thing can be rotated (and the positioning is different on each of the two 65mm I have). Additionally, this sector on one of the lenses (113615, pale blue shutter cock) seems to have a shim behind it, the other (127546, dark blue shutter cock) has nothing, again suggesting this is some kind of adjustment for the rangefinder coupling. Despite the few references to the need to 'sync' I can find no information at all about what the adjustments are, what is needs to be done, etc, only quite a bit on how to adjust (calibrate) the rangefinder itself. Can anyone throw any light on this?<br> There does seem to be a lot of confusion about these cameras in general. Many people suggest that the Super 23 was the first and only to have the bellows adjustable back. This isn't so but I'm still not sure whether there was only one model (the Press Deluxe?) or more.<br> I've got one, very old and 'battered', 2803165, but when I finally got the bellows open is was pretty clear that they had never been opened before - they were like new despite the appearance of the rest of the camera. Then there are references to a 'red' indicator in the viewfinder which appears if the collapsible 90mm or 100mm is not extended. There's no such indicator on my Super 23 - A14702 - (nor a cam to actuate it) but the one on the older Press is not red, but puts a black crosshatching across the rangefinder 'spot'. My other Press, a 23 Standard - 2820275 - doesn't have the collapsed lens indicator either, nor bellows although it is clear the body is able to take them (places for the locking knobs indicated on the sides).<br> This is without getting into the Polaroid 600 confusion, including that many are adamant that lenses and other accessories for the Press etc do not fit the Polaroid, and vice versa, but many sellers still advertise lenses etc saying they are are suitable for Mamiya Univeral/Super 23/Polaroid 600. Which makes it very difficult to buy something unless you can actually try it.<br> Is there anywhere that there is comprehensive, correct information about the whole of the Mamiya Press series?</p>