Macro Face of the Tomb Raider
Jan 25, 2019 18:39:11 #
This is a facial view of the live insects that I found that have raided the nests of the Mud Daubers that I harvested. At first glance they look like very small maggots and you could not tell that there were any hairs on them unless you viewed them under magnification.
Jan 25, 2019 19:09:01 #
Good work on this one.
--Bob
--Bob
sippyjug104 wrote:
This is a facial view of the live insects that I found that have raided the nests of the Mud Daubers that I harvested. At first glance they look like very small maggots and you could not tell that there were any hairs on them unless you viewed them under magnification.
Jan 25, 2019 19:35:24 #
Jan 25, 2019 19:52:42 #
Mark, I believe the focus will be much tighter in my shots now. I found the distance of the camera flange to the sensor of my Nikon D810 to be 46.5 mm. The FINITE microscope objective requires a 170 mm total length to gather the focus onto the sensor properly. This means that I need 123.5 mm of extension from the tip of the objective to the flange of the camera. The objective is 10 mm long so the rest has to be made up with either extension tube or bellows.
Through my experiments I found the set of extension tubes was a bit too long so I removed a short section and this shot shows the result which displays a much tighter focus.
Through my experiments I found the set of extension tubes was a bit too long so I removed a short section and this shot shows the result which displays a much tighter focus.
Jan 25, 2019 20:33:30 #
sippyjug104 wrote:
This is a facial view of the live insects that I found that have raided the nests of the Mud Daubers that I harvested. At first glance they look like very small maggots and you could not tell that there were any hairs on them unless you viewed them under magnification.
nice shootin Tex
Jan 25, 2019 21:10:15 #
sippyjug104 wrote:
Mark, I believe the focus will be much tighter in... (show quote)
You just proved what I had conjecture and brought up a few days or so ago. That there could be a more finite focus with a bellows than with tubes. Unlimited adjustment in it's range. Takes lens variation into account. Then adapt a set of tubes if a more sturdy device needed.
I will have a 4 and a 10 x lens here anyday.
Meantime trying MPE and dual Yongnuo lens on house plant flowers. Still a shake problem. I'll get freehand shooting eventually. Practice.
That lens is a fine piece of gear.
Bill
Jan 25, 2019 21:10:38 #
It is a very nice picture, with interesting details on the hairs in DL. There is vignetting at this extension.
Jan 25, 2019 21:18:44 #
Mark Sturtevant wrote:
It is a very nice picture, with interesting details on the hairs in DL. There is vignetting at this extension.
The picture is quite good, but for the life of me I cannot give these things credit for ANY redeeming feature.
Bill
Jan 25, 2019 22:50:43 #
Mark, this shot was taken with a 10X microscope lens with an NA of 0.25 which is equivalent to an f-2.0 so the depth of field is extremely narrow as you can imagine.
Essentially I am converting my camera into a microscope that can record what it sees at this point. I'm also using a FINITE microscope objective so there is no "tube lens" between the objective and the camera as there would be if I were using an INFINITE microscope objective.
With a infinite microscope objective a common tube lens is a standard 200mm prime camera lens connected to the camera set to focus at infinity. A thread adapter is connected to the lens's filter threads that allows connection to a microscope objective RMS type threads. It's a "lens on a lens". A different focal length prime lens can be used however it will affect the final magnification one way or another.
This image is also taken with a full frame camera which I suspect produces more vignetting on the edges. I suspect that there would be much less of it on a crop sensor camera.
Essentially I am converting my camera into a microscope that can record what it sees at this point. I'm also using a FINITE microscope objective so there is no "tube lens" between the objective and the camera as there would be if I were using an INFINITE microscope objective.
With a infinite microscope objective a common tube lens is a standard 200mm prime camera lens connected to the camera set to focus at infinity. A thread adapter is connected to the lens's filter threads that allows connection to a microscope objective RMS type threads. It's a "lens on a lens". A different focal length prime lens can be used however it will affect the final magnification one way or another.
This image is also taken with a full frame camera which I suspect produces more vignetting on the edges. I suspect that there would be much less of it on a crop sensor camera.
Jan 26, 2019 11:49:27 #
Brilliant work Gary, the focus is really good, the hairs and the legs and claws stand out really well.
Jan 26, 2019 13:37:56 #
Jan 26, 2019 18:00:43 #
Thanks for the positive feedbacks. I've learned that what I see on my screen is not always the same way others see it on theirs so it's good to have others report back with their critique so that I can make corrections if needed.
Jan 26, 2019 21:58:25 #
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