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Archive 2010Mamiya(MF) on Digital Thread
p.46 #1Mamiya(MF) on Digital Thread
Jim S started the thread and has been a good inspiration. It is up to you to contribute if you wish, the thread will probably gain momentum and then slow down again, as they do. It's not over until people stop posting.
As for pricing, the idea of mounting Mamiya lenses to digital platform is not new, but not that wide spread either. Mamiya 645 lenses can be bought in many places for good prices, in some cases - really good prices. You have to look around and perhaps realize that *Bay and some other internet based vendors target the people that are into cross platform systems and know they can charge you for it. I have found all my alt. lenses elsewhere for way better prices, at ordinary shops. Some with web sites, some without. Just look around and you will find plenty of Mamiya glass.
As for pricing, the idea of mounting Mamiya lenses to digital platform is not new, but not that wide spread either. Mamiya 645 lenses can be bought in many places for good prices, in some cases - really good prices. You have to look around and perhaps realize that *Bay and some other internet based vendors target the people that are into cross platform systems and know they can charge you for it. I have found all my alt. lenses elsewhere for way better prices, at ordinary shops. Some with web sites, some without. Just look around and you will find plenty of Mamiya glass.
Dec 12, 2010 at 10:13 AM
p.46 #4Mamiya(MF) on Digital Thread
Got my adapter two days ago, had the opportunity to try and get some winter shots in Stockholm today but, to my disappointment, the Cirrus adapter does not reach infinity, quite far from it actually. 
Dec 21, 2010 at 12:33 PM
p.46 #5Mamiya(MF) on Digital Thread
kosmoskatten wrote:
Got my adapter two days ago, had the opportunity to try and get some winter shots in Stockholm today but, to my disappointment, the Cirrus adapter does not reach infinity, quite far from it actually.
Serious Bummer.How are you going to proceed?
-Jim
Got my adapter two days ago, had the opportunity to try and get some winter shots in Stockholm today but, to my disappointment, the Cirrus adapter does not reach infinity, quite far from it actually.
Serious Bummer.How are you going to proceed?
-Jim
Dec 21, 2010 at 05:08 PM
p.46 #6Mamiya(MF) on Digital Thread
kosmoskatten wrote:
Got my adapter two days ago, had the opportunity to try and get some winter shots in Stockholm today but, to my disappointment, the Cirrus adapter does not reach infinity, quite far from it actually.
Is this the case with just one Mamiya lens or is it the same problem with several? When I received my 200mm APO I had to adjust its infinity focus. If it had been my only Mamiya lens I might have been somewhat inclined to think the adapter was to blame.
Got my adapter two days ago, had the opportunity to try and get some winter shots in Stockholm today but, to my disappointment, the Cirrus adapter does not reach infinity, quite far from it actually.
Is this the case with just one Mamiya lens or is it the same problem with several? When I received my 200mm APO I had to adjust its infinity focus. If it had been my only Mamiya lens I might have been somewhat inclined to think the adapter was to blame.
Dec 21, 2010 at 05:24 PM
p.46 #7Mamiya(MF) on Digital Thread
kosmoskatten wrote:
Got my adapter two days ago, had the opportunity to try and get some winter shots in Stockholm today but, to my disappointment, the Cirrus adapter does not reach infinity, quite far from it actually.
I realize you paid a fair bit for the adapter and that you are anxious to use your lens. If I were in your position I might consider hacking the adapter to make it work. I am not familiar with the Alpha mount but the fit looseness may be more of a concern than infinity focus. Unless lateral play is corrected evenly you in effect have a tilt lens whether you want it or not.
If the mounts on each side of the adapter are working properly (holding firmly with no play) the way to resolve the infinity issue is to somehow "shorten" the adapter.
I looked at some pics of the Cirrus adapter on their web page but the pics are not great. It might be possible to make an adjustment on one side of the adapter or the other.You could try a careful disassembly and look for thin spacers or shims that may be removeable to decrease overall adapter thickness. I think this is very unlikely but may be worth a shot.
It may be that you could remove the components on the Mamiya side of the adapter, machine down the corresponding face of the spacer tube and reinstall the removed components. If the lens isn't getting close enough to the sensor to get infinity focus.....material has to be moved.
How about posting some pics of the adapter on this thread?
Got my adapter two days ago, had the opportunity to try and get some winter shots in Stockholm today but, to my disappointment, the Cirrus adapter does not reach infinity, quite far from it actually.
I realize you paid a fair bit for the adapter and that you are anxious to use your lens. If I were in your position I might consider hacking the adapter to make it work. I am not familiar with the Alpha mount but the fit looseness may be more of a concern than infinity focus. Unless lateral play is corrected evenly you in effect have a tilt lens whether you want it or not.
If the mounts on each side of the adapter are working properly (holding firmly with no play) the way to resolve the infinity issue is to somehow "shorten" the adapter.
I looked at some pics of the Cirrus adapter on their web page but the pics are not great. It might be possible to make an adjustment on one side of the adapter or the other.You could try a careful disassembly and look for thin spacers or shims that may be removeable to decrease overall adapter thickness. I think this is very unlikely but may be worth a shot.
It may be that you could remove the components on the Mamiya side of the adapter, machine down the corresponding face of the spacer tube and reinstall the removed components. If the lens isn't getting close enough to the sensor to get infinity focus.....material has to be moved.
How about posting some pics of the adapter on this thread?
Dec 21, 2010 at 05:56 PM
p.46 #8Mamiya(MF) on Digital Thread
pengland; thanks for the reply. I received word from the guy at Cirrus adapters and he will try and find me a better fit based on the model I use (A900).
The play when focusing is due to the locking pin groove being too large, I can fix that so the main issue is the adapter thickness. I asked for a thinner one if possible and I will have mine exchanged. If the next one does not fit either I am all open for mechanical recombobulations of the adapter.
There is a small protruding rim on a metal ring, inside of the lens mount, that extends past the lens mount by a mm or so. I tried removing it as it was grating against the adapter and I thought that might solve it but I only gained a fraction of focusing towards infinity and I am still shy of reaching it. I will have a look at the adapter later today and see if I can work something before sending it back but I am not too sure about it.
The play when focusing is due to the locking pin groove being too large, I can fix that so the main issue is the adapter thickness. I asked for a thinner one if possible and I will have mine exchanged. If the next one does not fit either I am all open for mechanical recombobulations of the adapter.
There is a small protruding rim on a metal ring, inside of the lens mount, that extends past the lens mount by a mm or so. I tried removing it as it was grating against the adapter and I thought that might solve it but I only gained a fraction of focusing towards infinity and I am still shy of reaching it. I will have a look at the adapter later today and see if I can work something before sending it back but I am not too sure about it.
Dec 22, 2010 at 02:49 AM
p.46 #9Mamiya(MF) on Digital Thread
Kosmos,
As they say "when you are given lemons make lemonade"
You still have an outstanding MACRO lens.So hey put up some macro shots in the meantime.
-Jim
As they say "when you are given lemons make lemonade"
You still have an outstanding MACRO lens.So hey put up some macro shots in the meantime.-Jim
Dec 22, 2010 at 06:35 AM
p.46 #10Mamiya(MF) on Digital Thread
Yup, have lemon, will start squeezing out a few drops.
Dec 22, 2010 at 08:44 AM
p.46 #11Mamiya(MF) on Digital Thread
AhamB wrote:
200/2.8 APO on 5D
http://lh4.ggpht.com/_VbKC-nozCqs/TRDl_otVoaI/AAAAAAAAAlk/pl10gkFCchw/IMG_7778_0.jpg
Wonderful.
200/2.8 APO on 5D
http://lh4.ggpht.com/_VbKC-nozCqs/TRDl_otVoaI/AAAAAAAAAlk/pl10gkFCchw/IMG_7778_0.jpg
Wonderful.
Jan 07, 2011 at 10:58 AM
p.46 #12Mamiya(MF) on Digital Thread
A question:
While looking up for mamiya medium format on keh, i noticed this "The 45 f2.8 is one of three wide-angle lenses available for the Mamiya 645 series of cameras. Equivalent to a 28mm lens in 35mm format it could be just the lens."
Why should 45mm of a medium format be equivalent to a 28mm on 35mm? If anything, shouldn't it have a smaller FOV than a medium format equivalent, since 35mm sensor is smaller?
While looking up for mamiya medium format on keh, i noticed this "The 45 f2.8 is one of three wide-angle lenses available for the Mamiya 645 series of cameras. Equivalent to a 28mm lens in 35mm format it could be just the lens."
Why should 45mm of a medium format be equivalent to a 28mm on 35mm? If anything, shouldn't it have a smaller FOV than a medium format equivalent, since 35mm sensor is smaller?
Jan 15, 2011 at 11:23 PM
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p.46 #13Mamiya(MF) on Digital Thread
Some samples from 110/2.8 N using NEX5 and EP2 can be seen in my 'For Sale' gallery at:
http://zart.zenfolio.com/p378860355
(nothing artistic, just test shots)
http://zart.zenfolio.com/p378860355
(nothing artistic, just test shots)
Jan 17, 2011 at 09:03 PM
p.46 #14Mamiya(MF) on Digital Thread
shoenberg3 wrote:
A question:
While looking up for mamiya medium format on keh, i noticed this "The 45 f2.8 is one of three wide-angle lenses available for the Mamiya 645 series of cameras. Equivalent to a 28mm lens in 35mm format it could be just the lens."
Why should 45mm of a medium format be equivalent to a 28mm on 35mm? If anything, shouldn't it have a smaller FOV than a medium format equivalent, since 35mm sensor is smaller?
MF sensor/film plane is larger than 35mm, so a larger 'crop' of the projected image is captured. Therefore a 45mm on MF would be an equivalent angle of view as a 28mm on 35mm.
A question:
While looking up for mamiya medium format on keh, i noticed this "The 45 f2.8 is one of three wide-angle lenses available for the Mamiya 645 series of cameras. Equivalent to a 28mm lens in 35mm format it could be just the lens."
Why should 45mm of a medium format be equivalent to a 28mm on 35mm? If anything, shouldn't it have a smaller FOV than a medium format equivalent, since 35mm sensor is smaller?
MF sensor/film plane is larger than 35mm, so a larger 'crop' of the projected image is captured. Therefore a 45mm on MF would be an equivalent angle of view as a 28mm on 35mm.
Jan 17, 2011 at 09:19 PM
p.46 #15Mamiya(MF) on Digital Thread
shoenberg3 wrote:
Why should 45mm of a medium format be equivalent to a 28mm on 35mm?
On it's own native format (645 film) the angle of view is equivalent to 28mm on the 135 format. They write that because for most people the focal lengths in the 135 format are their reference for the angle of view for a lens. They didn't write that with the practices of adapting to dlsr's in mind.
Why should 45mm of a medium format be equivalent to a 28mm on 35mm?
On it's own native format (645 film) the angle of view is equivalent to 28mm on the 135 format. They write that because for most people the focal lengths in the 135 format are their reference for the angle of view for a lens. They didn't write that with the practices of adapting to dlsr's in mind.
Jan 18, 2011 at 10:37 AM
p.46 #17Mamiya(MF) on Digital Thread
First 2 are very cool.They look like toys.
-Jim
-Jim
Jan 19, 2011 at 07:50 AM
p.46 #18Mamiya(MF) on Digital Thread
Very nice, No2 especially. Have a 80/1.9N enroute - curious to try against my C variant (shooting into white seamless).
Jan 19, 2011 at 08:18 AM
p.46 #19Mamiya(MF) on Digital Thread
Thanks guys! My "baby steps" into Mamiya world..
Positively surprised by 80/1.9 sharpness and rendition. Still would like to try 2.8 also..
Positively surprised by 80/1.9 sharpness and rendition. Still would like to try 2.8 also..
Jan 20, 2011 at 09:07 AM
p.46 #20Mamiya(MF) on Digital Thread
I haven't really shot much lately. These were all from a few days ago, all with the 35N and Mirex, usually at F4.
http://ih3.redbubble.net/work.6651207.1.flat,800x800,070,f.jpg
http://ih3.redbubble.net/work.6651126.1.flat,800x800,070,f.jpg
http://ih3.redbubble.net/work.6651121.1.flat,800x800,070,f.jpg
http://ih3.redbubble.net/work.6651203.1.flat,800x800,070,f.jpg
JJ
http://ih3.redbubble.net/work.6651207.1.flat,800x800,070,f.jpg
http://ih3.redbubble.net/work.6651126.1.flat,800x800,070,f.jpg
http://ih3.redbubble.net/work.6651121.1.flat,800x800,070,f.jpg
http://ih3.redbubble.net/work.6651203.1.flat,800x800,070,f.jpg
JJ
Jan 27, 2011 at 07:52 AM