egbert Posted 5 November , 2006 Share Posted 5 November , 2006 I have a lot of aerials with a strange etching at the side of the photos. What is it: barometric post, film transportation mark .....? .... Link to comment Share on other sites More sharing options...
jay dubaya Posted 5 November , 2006 Share Posted 5 November , 2006 Hi Egbert, lucky you having so many aerials, is the pointer in the same position on other photos, could it relate to an altometer reading? Someone, somewhere knows , cheers, Jon Link to comment Share on other sites More sharing options...
StevieB Posted 6 November , 2006 Share Posted 6 November , 2006 I have a lot of aerials with a strange etching at the side of the photos. What is it: barometric post, film transportation mark .....? .... Not seen this before. I've got quite a few aerial photos as well; British, German, French and US and there is nothing like it on any of mine. It looks like it is something that is exposed onto the film when the shutter is released, so I would guess camera or film related. Is there a similar think in the top left corner as well? If so, does it show the same figures? Are they numbers or letters? Steve Link to comment Share on other sites More sharing options...
egbert Posted 6 November , 2006 Author Share Posted 6 November , 2006 Its embedded in the film; see this example in another photo: Link to comment Share on other sites More sharing options...
Malcolm Posted 6 November , 2006 Share Posted 6 November , 2006 Compass bearing? Aye Malcolm Link to comment Share on other sites More sharing options...
salientguide Posted 6 November , 2006 Share Posted 6 November , 2006 No way an expert on matters aeronautical but a bit of an expert on film having been a radiographer for unpty years. I agree with Malcolm its an image of a compass bearing, probably the heading of the aircraft at the moment the plate, and I would imagine the original negative was a glass plate, was exposed. SG Link to comment Share on other sites More sharing options...
Gunner Bailey Posted 6 November , 2006 Share Posted 6 November , 2006 I've not seen this before but it certainly looks like an aircraft compass. I could only guess that this was a camera fixed to the side of the aircraft with some form of prismatic window that captured a reflected image of the aircraft's compass. It's certainly a clever idea. I doubt if it would work with a hand held camera. As always Egbert ,you deliver the goods! Gunner Bailey Link to comment Share on other sites More sharing options...
egbert Posted 8 November , 2006 Author Share Posted 8 November , 2006 I agree: must be a compass bearing. 1st pic shows an "O" for Osten=East and 2nd "N" for Nord=north. But what are the (degree?-) no.s in between? What technique did they use to mirror the compass bearing on to the film negative. Probably no more answers possible..... P.S. the last example shown shall read North 45 something then, right? Link to comment Share on other sites More sharing options...
Gunner Bailey Posted 9 November , 2006 Share Posted 9 November , 2006 I agree: must be a compass bearing. 1st pic shows an "O" for Osten=East and 2nd "N" for Nord=north. But what are the (degree?-) no.s in between? What technique did they use to mirror the compass bearing on to the film negative. Probably no more answers possible..... P.S. the last example shown shall read North 45 something then, right? Egbert I think you are right, but really for a compass the N and O are not really needed at all. You just need the bearing. It would be useful to see a photo of a German WW1 period aircraft compass and compare it. Another possibility is that the camera has a small compass in it, giving a rough comparison to the aircraft compass. This would allow the camera to be hand held. Gunner Bailey Link to comment Share on other sites More sharing options...
egbert Posted 9 November , 2006 Author Share Posted 9 November , 2006 Fair point Gunner: I intend to "borrow" and scan the second album of K.Doelle in December or so. It deals with the photographic hardware (a/c, camera etc) and other tons of aviation photos. Maybe there is a hint.... Link to comment Share on other sites More sharing options...
egbert Posted 9 November , 2006 Author Share Posted 9 November , 2006 This is an interesting one: note the North arrow Link to comment Share on other sites More sharing options...
egbert Posted 9 November , 2006 Author Share Posted 9 November , 2006 Oh no! Now I am back at square one; and I thought I understood so far; note the north arrow and the "r" !!!! r=probably for Rechts=right?????? Link to comment Share on other sites More sharing options...
Gunner Bailey Posted 9 November , 2006 Share Posted 9 November , 2006 Oh no! Now I am back at square one; and I thought I understood so far; note the north arrow and the "r" !!!! r=probably for Rechts=right?????? Egbert The arrows would have been drawn on the clear areas of the negative in black ink. I would say they were judgemental, and maybe a quick guide mark, or perceived correction. Didn't the Germans use Port and Starboard like the rest of the aviation world? Gunner Bailey Link to comment Share on other sites More sharing options...
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