mawz wrote:
A truly single-coated lens will have only one coating colour in the reflections (I've got one in front of me now, a circa-1955 Nikkor-S.C 5cm f1.4 in LTM mount).
Is that really true? I mean assuming there are 4 single coated elements in a lens you should be able to see 4 or more reflections - (more because there is the potential for the reflection of a reflection - like you can see many of yourselves with two mirrors). But assuming only one reflection per element and assuming that they are coated differently - even though they are each only single-coated - you could potentially see 4 differently colored reflections.
Multi-coating I thought was the thickness of the coating and had not much to do with the color. I can sometimes tell "single coating" from multi-coating. The MC one looks kinda soft (like you could scratch it with your fingernail) and the reflections look rich and very saturated. SC reflections look bright and sometimes (often?) pale. The surface of a SC element looks somehow harder and I can kinda tell that it might be thinner.
Those aren't rules and there may be many exceptions but that's what my own experiences have taught me - which doesn't mean that it's actually correct but....
I bought an S-M-C Takumar 50mm 1.4, but when I screw it onto my adapter, it has a lever that gets stuck against the edge of the adapter when I focus about half-way towards infinity. This lever turns with the aperture... and by mounting the lens on the adapter, it's already bent very slightly.
The lens has no problems focusing all the way to infinity without the adapter yet though...
Is it possible to remove this or should I use another adapter (or mod it somehow)? If so, any tips on which one? The one I use now has an af confirm chip by the way, so I'd like one with an adapter.
I'm very impressed by pictures taken with Takumar lenses, not only here in the forum. One photographer, who uses Takumars with his medium-format camera is Joakim Eskildsen. The pictures in his astonishing book "The Roma Journeys" were all taken with medium-format Takumars. In case you have the chance to see an exposition of his pictures or have a look at his book: do it. For me is an outstanding great artist.
Lever? Show us a pic of what you're talking about. I at least, can't visualize what you're talking about. All I know about are two spring-loaded pins on the bottom or the lens. One for the Auto/Manual lock and one for Auto Aperture operation on cameras that support it.
It's this thing... sorry about the poor IQ, just grabbed my camera with the nearest lens on it :P
Opposite of the aperture locking pin. Somehow it grinds into the adapter when I screw it on, and because it bent inwards by that, it stops the lens from focusing to infinity and it also gets the aperture stuck.
I think my lens is a newer version and this lever is used to read out the aperture on the camera. However, it's just in the way of using this lens with the current adapter.
It's this thing... sorry about the poor IQ, just grabbed my camera with the nearest lens on it :P
Opposite of the aperture locking pin. Somehow it grinds into the adapter when I screw it on, and because it bent inwards by that, it stops the lens from focusing to infinity and it also gets the aperture stuck.
I think my lens is a newer version and this lever is used to read out the aperture on the camera. However, it's just in the way of using this lens with the current adapter.
debuggerus wrote:
Looks like you have a flange adapter. A flange-less adapter should work.
That makes sense... Does a flange-less adapter also mean the aperture stop-down button won't be pressed? I don't know if that would matter though, since the lens has an auto/manual switch that I think would take care of that...
I'm considering dremeling the flange off my adapter, since it was pretty cheap, and it's probably quicker than buying a new one (which would leave me with a useless adapter anyway).
Just in case that fails, any tips on what adapter to get, or how to recognize if it will have a flange? It's very tricky to spot these details on most sites selling them...
TweakMDS wrote:
That makes sense... Does a flange-less adapter also mean the aperture stop-down button won't be pressed? I don't know if that would matter though, since the lens has an auto/manual switch that I think would take care of that...
I'm considering dremeling the flange off my adapter, since it was pretty cheap, and it's probably quicker than buying a new one (which would leave me with a useless adapter anyway).
Just in case that fails, any tips on what adapter to get, or how to recognize if it will have a flange? It's very tricky to spot these details on most sites selling them......Show more →
No, the auto-aperture pin won't be pressed with a flange-less adapter just like you said which doesn't matter since your lens has an auto/manual switch. If you dónt have any lenses that needs the flange, just "dremel" the flange off. Don't worry, you can't go wrong...
There is a thread here that have photos of flange and flange-less adapters. You can try to do a search. If you buy one from Ebay, you can just ask the seller. They should be able to tell as well.
Now that I see it larger it's just a black flange tho I bought one from Rainbow that was flangeless but I don't see it listed any longer. Their K-Mount one is flangeless though.
And you can see a flanged one (like you already have I guess) from the same people here:
I have found a 50/1.4, and 200/4 Asahi Takumar (can't remember if it was super or SMC),
and I am looking for an adapter (or two?).
I am a bit confused with which one to buy?
Could someone please advise me, or direct me to the weblinks on related discussion on the correct or preferred adapters?
I believe they are listed as M42 to EOS screw mount adapters.
I see plenty of them offered on the internet (Amazon/ebay...) for around $10.00 (non-chipped). Then I read some suggestions on getting the chipped ones. I am not sure if a $10.00 adapter would work fine - or - it would be just a mediocre adapter. I thought it would be more around $20 to $30 starting price for something decent - specially workmanship - and of even thickness. But if the cheaper ones are fine - of course I will get that. Probably one of the fotodiox offerings.
I intend to use this on my 1Dmk2/1Ds.I hope the adapters don't have the problem of mirror clearance on infinity focus - with these bodies!
@tintinb: The cheap ones are fine and you'd better not get one with a chip for use on the camera's you listed, unless you're sure that the adapter triggers the AF microswitch. I got one that works perfectly a couple of years ago from ebay seller big_is (a well known seller).
Instead of using the focus confirmation I recommend getting a focusing screens suitable for manual focusing for your camera's (Ec-S type).
AhamB wrote:
@tintinb: The cheap ones are fine and you'd better not get one with a chip for use on the camera's you listed, unless you're sure that the adapter triggers the AF microswitch. I got one that works perfectly a couple of years ago from ebay seller big_is (a well known seller). Instead of using the focus confirmation I recommend getting a focusing screens suitable for manual focusing for your camera's (Ec-S type).
Thanks Ben (and rtester) for your reply.
I think I will have to rely on something from an us seller as I may need it before weekend of 18th.
Incidentally - I have the unchipped (didn't like chipped idea) adapter from big_is for my zuiko. It works quite good - well made and is very snug for what they cost. Let me see.
I bought one from Rainbow that was flangeless but I don't see it listed any longer. Their