Discussion in 'General Talk' started by Caladina, Oct 24, 2020.
the red line stops at the infinity mark, lines up with it
And I am assuming the lens group moves in and out as you rotate the focusing ring.
yes the whole lens group moves, no loose sounds,
does the picture of the rear element look correct, i wasn't sure if there may have been a missing one with the amount thread it has there
My guess is that it has been disassembled and reassembled wrong. It really can't be that hard to remove the rear screws and change the helicoid so that it lines up properly. A little trail and error.
But sadly, I am out of idea's for you Caladina. Craig is going to be more help to you from now on.
Caladina, I have had a quick look but it may take some time as I think it is under my house in a heap of photo gear I have stored there, I put a image up as soon as I can find it.
Caladina, I still can not find my 50mm version of your lens, so I have looked at my other M42 mount lenses and they are all the same. When my lens are focused to infinity the rear element is extended to the rear, in your images it does not appear to be happening, as Gary suggested the helicoil may be miss-aligned but I am only guessing . I would be interested to see how you go with your secondM42 lens when it arrives. I don't know what the Op-shops are like where you live but this may be a good place to pick up a cheap M42 mount lens if the next lens takes too long to arrive.
ok, i'll wait for the next one,
when i used the extension tubes on their own to sit the lens at a closer distance than the lens elements would normally be on the M42 mount this would probably far exceed the closeness of the normal range when the lens helicoil is correctly mounted?
i went from having the lens sitting on the camera flange to various distances using m mount extension tubes
while i been waiting for the other M42 to turn up i have just seen a pic of the back of the lens on tinternet, looks like there is a lens/group missing from the rear.
contacted the seller and have returned it for a replacement.
the one from t'internet.
i did take a pic of the out going lens before i knew it had bits missing
Caladina, it's a shame as these lenses do give good results, also it slows you down in focusing, which in turn forces you to think more about what you are taking. resulting in a better photos.
yep, thats why i like the idea of using them, less clinical and more creative, as you can probably tell from i'm all about getting outside the box
the guy has a retro camera shop so he thinks he may have a few others, i've not given up on using vintage lenses, just bad luck on a first attempt.
you gotta have some ham fall out your sammich every once in a while.
Fortunately we're very lucky with the Eos mount - there are very few lenses that can't be adapted to it easily. M42 is dead easy and I've had some very nice results with old Pentacon, Helios and Pentax lenses.
Gallery of pictures with my 400D and a Helios 50mm f2 here
Since I'm in the used lens business I currently own a shed-load of adapters for my Eos, it's my main test-bed for lenses. Let's see if I can remember them all:
Canon FD - has a corrective lens in the adapter but works well.
C-mount (macro only)
Fujifilm FX - corrective lens type, not very good
M39 for older Zenit lenses etc.
M42 - two of these, one with a rim to press the stopdown pin, the other without.
Minolta MD - Corrective lens type - I don't have one for Minolta AF any more since I have an old Sony Alpha
Nikon - not used much since my main camera is a Nikon, but occasionally useful for lenses that have electronics faults etc. and won't play nice with the Nikon body. Or if I want to put one of my lenses onto the Canon for other reasons, of course.
PK - not used much any more since I have a Pentax DSLR so I can test autofocus etc.
QBM (old Rolleiflex etc.)
Tamron Adaptall - not very good, it's just a solid adapter ring with nothing to control lens aperture and no chip, I usually use another mount and an adapter that has a chip.
OK, I missed the C-mount lens since it's pretty useless but remembered the rest.
great post thanks, is there a direct ef-m to pentax pk ?
the only mount adapters i have at the moment are L39 and M42 to ef-m and M42 to ef
I've seen them on sale, I don't have an EF-M camera (my mirrorless cameras are micro 4/3 and Nex) but you can get the adapters for about £8.50 upwards (if you don't mind buying from China) - I don't know which country you're in but eBay has dozens of them - the ones you want are tubes that look like they're about 30mm long, something like this. They're basically just dumb extension tubes.
I have similar adapters for both of my mirrorless bodies. You can get VERY silly with mirrorless bodies, almost anything can be adapted to them.
i'm in north london,
looking for an M42 500mm takumar if you ever come across one
Not exactly a Takumar 500 mm but I have a Hanimar 400mm with a M42 mount and to go with it a 2x extender and a APS Autoplus 3x extender, the Hanimar 500mm looks like a piece of pipe with a focusing piece on the end and is very light. I must get them out and have a serious play with them one day. I have seen a few 400mm lenses with M42 and K mount but very few 500mm lenses down here in Tasmania, depending on what is available where you live, is a 400 mm and a 2x extender a option to look at ? The 400mm is a very nice lens to use. There is a second option worth a look and that is the 500 mm mirror lens, I have a Tamron 500 mm lens with a adaptall 2 mount version, draw- back is you can only have F8 for the aperture ( due to the mirror design ) but positives are Tamron have a variety of adapters to different cameras, for this lens, it is very short and I find a fair bit lighter then other 500mm and 600mm lenses, handy if you want hand held.
The Tamron 500mm mirror lens has macro capability of 1:3 and using a 2x extender 1:1.5 from about 2 meters away , must try out my 3x extender and see if I can get 1:1.
Draw-back is has some unusual out of focus area. If this lens tickles your interest have a look on youtube on the Tamron SP 500 mm mirror lens, there is some good in-depth video clips worth a look.
It's been a VERY long time since I've had any long Takumars - I think the last were a 300mm in 2015-ish and a 200mm in 2018-ish ago. They just don't seem to come my way much. Loads of cheapo crap in that range, of course, but the big Takumars don't turn up at prices that make sense for a reseller. My current big lens is a Vivitar Series 1 100-500 for Nikon, which I got absurdly cheaply in a car boot sale, and it gives good enough results for my purposes but isn't up to really high quality work.
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