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kansalliskalaCafe
Joined: 23 Jul 2015 Posts: 602 Location: South Finland, countryside
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Posted: Thu Oct 19, 2017 2:08 pm Post subject: Bilora Bella 66 lens & Samsung NX10 |
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kansalliskalaCafe wrote:
Cute camera but the shutter is slow. Lens is some sort of doublet? Focusing done by
separating the two elements. This camera (picture from thecamerasite):
mounted with m42 extension, cardboard and film canister
#4
needs a hood, otherwise no contrast
#5
not very sharp but decent color and contrast
#1
first attempt at infinity
#2
tube is sort of wobbly so center is not the main focus
#3
infinity at last after use of some scissors
#6
#7
#8
_________________ (my normal account password still on another computer) |
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luisalegria
Joined: 07 Mar 2008 Posts: 6627 Location: San Francisco, USA
Expire: 2018-01-18
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Posted: Thu Oct 19, 2017 2:51 pm Post subject: |
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luisalegria wrote:
Most likely a triplet. On simple cameras focus was by moving the front element.
But I would have expected much better results here.
Triplets can be very sharp. _________________ I like Pentax DSLR's, Exaktas, M42 bodies of all kinds, strange and cheap Japanese lenses, and am dabbling in medium format/Speed Graphic work. |
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alex ph
Joined: 16 Mar 2013 Posts: 1571
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Posted: Thu Oct 19, 2017 3:16 pm Post subject: |
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alex ph wrote:
Nice work of adaptation! The effort you made in praise of curiosity is really meritable.
Have you already tried to shoot people witht this lens? This softness might give an interesting ancient-like effect. |
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kansalliskalaCafe
Joined: 23 Jul 2015 Posts: 602 Location: South Finland, countryside
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Posted: Thu Oct 19, 2017 4:41 pm Post subject: |
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kansalliskalaCafe wrote:
luisalegria wrote: |
But I would have expected much better results here.
Triplets can be very sharp. |
Mount is still wobbly, I did the focusing moving the whole lens. I think I can get better results by calibrating it at infinity and using the original focusing helicoid. _________________ (my normal account password still on another computer) |
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kansalliskalaCafe
Joined: 23 Jul 2015 Posts: 602 Location: South Finland, countryside
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Posted: Thu Oct 19, 2017 4:51 pm Post subject: |
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kansalliskalaCafe wrote:
I didn't actually go after sharpness, just to get a reconizable picture.
But it is not very unsharp after all.
#1
#2
_________________ (my normal account password still on another computer) |
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luisalegria
Joined: 07 Mar 2008 Posts: 6627 Location: San Francisco, USA
Expire: 2018-01-18
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Posted: Fri Oct 20, 2017 10:00 pm Post subject: |
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luisalegria wrote:
Checked for haze?
I would expect good contrast usually.
These front-cell focus lenses almost always have haze from evaporated lubricant. _________________ I like Pentax DSLR's, Exaktas, M42 bodies of all kinds, strange and cheap Japanese lenses, and am dabbling in medium format/Speed Graphic work. |
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