Somnambulist Squirrel
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More walking about town with the Tokina 20-35
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This Month Through Your Adapted Lenses -- October 2019
- Thread starter Alan WF
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backsidewalkaround
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It was not in October but wanted to share b'cause I liked it so much 
Porst 55 f/1.2
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Dont forget I am a newbie
Porst 55 f/1.2
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Dont forget I am a newbie
vivaldibow
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@ f2
Alan WF
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This is really good.
Regards,
Alan
Regards,
Alan
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SLN001
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Tiny lens, uncoated (1937). Just back from a CLA. I am very satisfied on how it works on a Sony A7II. Next is film.
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Steve
Just an Armadillo on the shoulder of the information superhighway.
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Steve
Just an Armadillo on the shoulder of the information superhighway.
Tons o Glass
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OK fine, you're right, it's not a mirror lens, it's just my Tamron 52BB 90/2.5 Macro with a Sharpie'd filter attached. It was a fun little experiment to do in the back yard.
Here are some results:
Wide open. I'm unsure of the effective aperture with my filter attached - The aperture starts to affect the center bokeh balls one click down, so let's say f/3.5ish?
Aperture set to f/4.8ish (half-stop on the lens between f/4 and f/5.6). There wasn't a whole lot of light coming in at this point, at least in the center of the image.
Also wide open, killed some purple fringing in post. I was shooting through some branches to catch the background hence the dark right edge.
Also wide open.
To improve the off-center donut shapes (and to one-up me), one could affix some black construction paper on to the front element, or better yet, black out an element closer to the lens' aperture. Maybe it would be fun on a cheap fast fifty?
Here are some results:
Wide open. I'm unsure of the effective aperture with my filter attached - The aperture starts to affect the center bokeh balls one click down, so let's say f/3.5ish?
Aperture set to f/4.8ish (half-stop on the lens between f/4 and f/5.6). There wasn't a whole lot of light coming in at this point, at least in the center of the image.
Also wide open, killed some purple fringing in post. I was shooting through some branches to catch the background hence the dark right edge.
Also wide open.
To improve the off-center donut shapes (and to one-up me), one could affix some black construction paper on to the front element, or better yet, black out an element closer to the lens' aperture. Maybe it would be fun on a cheap fast fifty?
M_digicapt
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This is really a cool experiment.OK fine, you're right, it's not a mirror lens, it's just my Tamron 52BB 90/2.5 Macro with a Sharpie'd filter attached. It was a fun little experiment to do in the back yard.
Here are some results:
Wide open. I'm unsure of the effective aperture with my filter attached - The aperture starts to affect the center bokeh balls one click down, so let's say f/3.5ish?
Aperture set to f/4.8ish (half-stop on the lens between f/4 and f/5.6). There wasn't a whole lot of light coming in at this point, at least in the center of the image.
Also wide open, killed some purple fringing in post. I was shooting through some branches to catch the background hence the dark right edge.
Also wide open.
To improve the off-center donut shapes (and to one-up me), one could affix some black construction paper on to the front element, or better yet, black out an element closer to the lens' aperture. Maybe it would be fun on a cheap fast fifty?
The last shot is my favorite.I've thought about doing a similar thing but placing the insert inside the adapter.
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Tons o Glass
Senior Member
Thanks. This one is easier to look at, that's for sure!This is really a cool experiment.
Also wide open.
Given that my mirror lenses are all 300 to 500mm focal lengths and given that they're all not particularly sharp at close distances, I thought it would be fun to get my fill of donuts with a shorter focal length on a sharp contrasty macro (although the sharpest portion of the lens is blacked out hehe).
It should be fun to give this or something like it a shot! I'd encourage you to do so. Placing the insert as close to the lens' aperture diaphragm as possible would be ideal.
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M_digicapt
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I thought I had seen a video where the insert was placed near the sensor but couldn't find it. I found this digitalrev link I had saved that seems easy enough. Though using a dry erase marker on a filter is probably easier.Thanks. This one is easier to look at, that's for sure!This is really a cool experiment.
Also wide open.
Given that my mirror lenses are all 300 to 500mm focal lengths and given that they're all not particularly sharp at close distances, I thought it would be fun to get my fill of donuts with a shorter focal length on a sharp contrasty macro (although the sharpest portion of the lens is blacked out hehe).
It should be fun to give this or something like it a shot! I'd encourage you to do so. Placing the insert as close to the lens' aperture diaphragm as possible would be ideal.
WindwardHaole
Senior Member
50mm, 1.4 Olympus G Zuiko
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