ChrisN
Striving
back alley said:
Crikey Joe, you had me worried for a moment there! 😀
Jupiter-12 to Canon P?
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Crikey Joe, you had me worried for a moment there! 😀
back alley
IMAGES
no worries mate!
airds
Well-known
VI-L & J12
VI-L & J12
Joe
You may find it flares a wee bit into the light and needs a hood - the Heavystar vented 40.5 mm ideal .... pic hopefully to follow but here's a VI-T with the Jupiter-12
VI-L & J12
planetjoe said:
Joe
You may find it flares a wee bit into the light and needs a hood - the Heavystar vented 40.5 mm ideal .... pic hopefully to follow but here's a VI-T with the Jupiter-12
taffer
void
My ! Looks beautiful ! 😱
I'm starting to have seller's remorse on my own J-12 😀
I'm starting to have seller's remorse on my own J-12 😀
AndersG
Well-known
My black J-12 serial number 84xxxxx fits without problems (I looked very carefully with the shutter locked open 🙂) on my recently aquired Canon 7.
/Anders
/Anders
planetjoe
Just some guy, you know?
Airds:
Your advice is well-received. I was actually wondering about the flare issue myself, after I received the J-12, and I sort of wondered if the deeply-recessed front element wouldn't give me an extra margin of safety. Apparently, like you suggest, not in all conditions.
At any rate, I have one of Heavystar's 40.5mm vented shades (for my Industar-61 L/D), and mounted it just for fun. The lines of sight seem to work out fine, which is very nice, considering that this hood (I think) is optimized for a 50mm FOV. Correct me if I'm wrong about that.
But here's the interesting bit: the mounted hood makes it a breeze to change aperture, almost especially since the J-12 has no click-stops (low turning resistance). It's like an aperture ring extension, and it JUST clears the end of travel for the helicoid as the lens racks in. Wow. Yeah, you'll have to peer down into the lens to SEE the f-stop setting, but really, what's the big deal? It's better than the fiddly thumb-forefinger method you'd use otherwise.
But it does ruin the lines, somewhat. At least, in my opinion.
I actually have another identical vented shade coming, from *bay user americaneagle_camera. Heavystar hadn't had any in his inventory for a while, and I seem to be splitting at the seams with FSU LTM lenses. We'll see.
My impression (helped along by info from the likes of xayraa33 and AndersG, among others), is that the only J-12s one must really beware are the early batches, especially the ones before 1957 or so. I've heard good things about the '57s, so I'm only assuming that the later ones also fall into line. I think that the manufacturing lines changed facilities somewhere in this time period, so perhaps the packaging of the rear lens group changed somewhat. Of course, this says nothing about the variabilities within the batches.
Can you tell that I'm at work again, longing to go home and shoot around? Of course you can.
-joe.
Your advice is well-received. I was actually wondering about the flare issue myself, after I received the J-12, and I sort of wondered if the deeply-recessed front element wouldn't give me an extra margin of safety. Apparently, like you suggest, not in all conditions.
At any rate, I have one of Heavystar's 40.5mm vented shades (for my Industar-61 L/D), and mounted it just for fun. The lines of sight seem to work out fine, which is very nice, considering that this hood (I think) is optimized for a 50mm FOV. Correct me if I'm wrong about that.
But here's the interesting bit: the mounted hood makes it a breeze to change aperture, almost especially since the J-12 has no click-stops (low turning resistance). It's like an aperture ring extension, and it JUST clears the end of travel for the helicoid as the lens racks in. Wow. Yeah, you'll have to peer down into the lens to SEE the f-stop setting, but really, what's the big deal? It's better than the fiddly thumb-forefinger method you'd use otherwise.
But it does ruin the lines, somewhat. At least, in my opinion.
I actually have another identical vented shade coming, from *bay user americaneagle_camera. Heavystar hadn't had any in his inventory for a while, and I seem to be splitting at the seams with FSU LTM lenses. We'll see.
My impression (helped along by info from the likes of xayraa33 and AndersG, among others), is that the only J-12s one must really beware are the early batches, especially the ones before 1957 or so. I've heard good things about the '57s, so I'm only assuming that the later ones also fall into line. I think that the manufacturing lines changed facilities somewhere in this time period, so perhaps the packaging of the rear lens group changed somewhat. Of course, this says nothing about the variabilities within the batches.
Can you tell that I'm at work again, longing to go home and shoot around? Of course you can.
-joe.
airds
Well-known
J12
J12
Must agree Joe - but it makes it TOO easy to shift f-stops :-( Having click stops would have been great.
I was thinking of putting some id mark or sticker on the rim of the hood to identify a stop, maybe f8 - that could be seen through the viewfinder, but of course any tightening/loosening of the hood would throw it out - although the extremes of 'travel' for f2.8 and f22 are easy enough!
Without the hood, and although it's a poor print & scan, you can easily see the aperture blades effects facing (well) into the light on my pic Calm - just above the yacht crew.
rdgs
J12
planetjoe said:
Must agree Joe - but it makes it TOO easy to shift f-stops :-( Having click stops would have been great.
I was thinking of putting some id mark or sticker on the rim of the hood to identify a stop, maybe f8 - that could be seen through the viewfinder, but of course any tightening/loosening of the hood would throw it out - although the extremes of 'travel' for f2.8 and f22 are easy enough!
Without the hood, and although it's a poor print & scan, you can easily see the aperture blades effects facing (well) into the light on my pic Calm - just above the yacht crew.
rdgs
xayraa33
rangefinder user and fancier
By 1961 , the Jupiter -12 lens production shifted from the Krasnogorsk mechanical & optical works to the Lytkarino mechanical & optical factory. The J 12s from about 1955 and earlier, seem to be the ones that do not fit on Canon LTM cameras from the IIIa to the rest of the later Canon LTM range. These early J-12s do not fit my Canons or on my Leica IIIc . There are a lot of other LTM lenses that do not fit the Canon models made before the Canon IIIa, also it seems.
airds
Well-known
Re-skinned P
Re-skinned P
Was rummaging around the 'net earlier and came across what looks like a re-skinned P with the Jupiter-12 .... hmmm-mm. (A Japanese language page; ~ halfway down)
Re-skinned P
Was rummaging around the 'net earlier and came across what looks like a re-skinned P with the Jupiter-12 .... hmmm-mm. (A Japanese language page; ~ halfway down)
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