Author Topic: Quality question about the "old" AIS 50mm f1.4 and f1.8  (Read 1800 times)

Bent Hjarbo

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Re: Quality question about the "old" AIS 50mm f1.4 and f1.8
« Reply #15 on: March 14, 2017, 16:16:01 »
That's not my observation with the short nose version of the 50/1.8, but I have yet to test the long nose version (in my case, an earlier AI).
Why not a large brick wall like the side of a building as apposed to a garden Wall? We on "The Ring of Fire" don't have large brick walls like the side of a building as such buildings fall down when the earth moves.
My pick many years ago was a 50/1.8 AI over a 50/1.4 AI as I found the f/1.8 was better wide open than the f/1.4 was at f/2.0.
I have now been out shooting walls :o I will not bother you with the pictures.
My findings so far are that my long nose has a centering problem as pointed out by "pluton".
The f1.4 is not useful at f1.4, but at f2.0 it is as good as the short nose 1.8, it is a close call on which is best from f2.0,but maybe the f1.4 wins by a hair ;)
I will later find a place to make better far field photos, as the intend use is allround, portrait and landscape.
My latest test was done with liveview focus on a tripod and a remote control (wired), there may be a slight difference in the focus indicator and what looks in focus in liveview.
The input here has been very useful and helpful.
Br Bent

Bent Hjarbo

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Re: Quality question about the "old" AIS 50mm f1.4 and f1.8
« Reply #16 on: August 28, 2018, 17:31:49 »
To day I tried an Ai 50mm f1.4 at my photodealer, for comparison with my own Ais copy.
A f1.4 there is definite some error on my sample, so now I want to clean it inside, but looking at Richs pages I can see that the Ais is very different from the Ai.
Does anyone have any knowledge of how to get into the optics in a simple way?
Br Bent

Erik Lund

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Re: Quality question about the "old" AIS 50mm f1.4 and f1.8
« Reply #17 on: September 03, 2018, 10:50:26 »
To day I tried an Ai 50mm f1.4 at my photodealer, for comparison with my own Ais copy.
A f1.4 there is definite some error on my sample, so now I want to clean it inside, but looking at Richs pages I can see that the Ais is very different from the Ai.
Does anyone have any knowledge of how to get into the optics in a simple way?
Br Bent



I don't think a cleaning will make your lens better in any way, there is always a risk opening up lenses that they will get worse unless you have absolute control of the optics,,,
Much better to find a good sample, they are so cheap!
Rick has all the required instructions for lens tinkering on his site if you like to open up lenses, remember to get the right tools for the job also ;)
Erik Lund

Bent Hjarbo

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Re: Quality question about the "old" AIS 50mm f1.4 and f1.8
« Reply #18 on: October 11, 2018, 10:44:59 »
I have now solved my repair problem, I bought a near mint 50mm f1.2 ;)
The price was similar to what a 1.4 would have cost me :)
Stil a bit soft at distances @1.2, but nowhere as the 50/1.4
But makes nice sharp images close up.
None of the pictures have any artistic value ;)

richardHaw

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Re: Quality question about the "old" AIS 50mm f1.4 and f1.8
« Reply #19 on: October 11, 2018, 10:52:09 »
that thing is a very good lens if you got a good copy :o :o :o

Bent Hjarbo

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Re: Quality question about the "old" AIS 50mm f1.4 and f1.8
« Reply #20 on: October 11, 2018, 11:23:05 »
It seems as it is a good copy, I just have accept the fact that shiny surfaces @1.2 may have a lot of smearing. But this one actually render fine if ligtning if ok. even my greenhouse is much better with this that my 1.4 version. :)

Erik Lund

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Re: Quality question about the "old" AIS 50mm f1.4 and f1.8
« Reply #21 on: October 11, 2018, 13:37:42 »
Try it out with live view, it should also be sharp at distance ;)
Erik Lund

Bent Hjarbo

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Re: Quality question about the "old" AIS 50mm f1.4 and f1.8
« Reply #22 on: October 11, 2018, 14:00:20 »
It is, I was out today in the lovely sun, and it is sharp, it will grow on me for its rendering.