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3D stereo experiments with adapted MF lenses
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PostPosted: Sat Mar 01, 2025 1:40 pm    Post subject: Reply with quote

Minature daffodils through 3 lenses. I was on my knees to get these images, so the base separation would be silmilar but not identical. The Rayfact is deep-set and the other 2 lenses had hoods and all were on the Sony A7r3.

Vivitar Series 1 90-180mm f4.5 at 90mm, f11, hand held.



Samyang 85mm f1.4 at f11, hand held.



Rayfact 90mm f4 at f11, hand held.



The focus is not so good on the right hand image but the 3D is OK.


PostPosted: Sat Mar 08, 2025 6:19 pm    Post subject: Reply with quote

One of the first warm spring days over here compelled me to go out and take some nature shots.

Sony A7, Rodenstock Retina Heligon 50mm f1.9.

Some old oak branches.


#1


#2


#3


PostPosted: Mon Mar 10, 2025 7:48 am    Post subject: Reply with quote

blotafton wrote:
One of the first warm spring days over here compelled me to go out and take some nature shots.

Sony A7, Rodenstock Retina Heligon 50mm f1.9.

Some old oak branches.


#2


#3


I prefer 2 to 3 as the latter lacks sharpness for the cut end of the branch.


PostPosted: Tue Mar 11, 2025 9:57 am    Post subject: Reply with quote

[quote="e6filmuser"]
blotafton wrote:

I prefer 2 to 3 as the latter lacks sharpness for the cut end of the branch.


Why do I keep using wide open aperture for 3D Very Happy


PostPosted: Tue Mar 11, 2025 10:15 am    Post subject: Reply with quote

[quote="blotafton"]
e6filmuser wrote:
blotafton wrote:

I prefer 2 to 3 as the latter lacks sharpness for the cut end of the branch.


Why do I keep using wide open aperture for 3D Very Happy


I shoot most of mine with m4/3 and mostly at f11, occasionally f8. So that would be f22 and f16 on FF.


PostPosted: Thu Mar 13, 2025 8:13 am    Post subject: Reply with quote

Like 1 small Like 1 small


PostPosted: Thu Mar 13, 2025 10:43 am    Post subject: Reply with quote

I seem not to have uploaded this image from 2018 before.

These are fruiting bodies of a slime mould, probably of a Metatrichia species.

Sony A7R (aperture priority mode), Laowa 25mm f2.8 2.5x-5x ultra-macro at x2.5 and f11, ISO 160, triple TTL flash hand-held. FOV probably 14mm wide.



PostPosted: Thu Mar 13, 2025 10:45 am    Post subject: Reply with quote

blotafton wrote:
One of the first warm spring days over here compelled me to go out and take some nature shots.

Sony A7, Rodenstock Retina Heligon 50mm f1.9.

Some old oak branches.


#2




Looks great! I like that significantly more than the one with more DOF. But I know I'm the exception in that regard...


PostPosted: Thu Mar 13, 2025 10:49 am    Post subject: Reply with quote

These were shot with my Optical Proiectar 35 mm f/1.6:









... and these two with my Optical Proiectar 50 mm f/1.6:






PostPosted: Thu Mar 13, 2025 11:02 am    Post subject: Reply with quote

simple.joy wrote:
These were shot with my Optical Proiectar 35 mm f/1.6:









... and these two with my Optical Proiectar 50 mm f/1.6:






I note that most of your pairs show that you rotate the camera slightly between the two images of a pair. Easily corrected, once aware.


PostPosted: Fri Mar 14, 2025 12:48 pm    Post subject: Reply with quote

Leocarpus fragilis Eggshell Slime Mould. From 2017.

Olympus EM-1, Reversed Schneider HM40 on Kiron x1.5 TC, triple TTL flash, hand-held. FOV 6mm wide before any cropping.




PostPosted: Sat Mar 15, 2025 6:47 pm    Post subject: Reply with quote

Birch Shieldbug with Parasite Eggs

A Birch Shieldbug Elasmostethus interstinctus, carrying five eggs of a tachinid fly parasite. The parasite is likely to be Phasia species.

Olympus EM-1, Kiron 105mm at f16, twin RC TTL flash, hand-held.



PostPosted: Sat Mar 15, 2025 10:45 pm    Post subject: Reply with quote

simple.joy wrote:
blotafton wrote:
One of the first warm spring days over here compelled me to go out and take some nature shots.

Sony A7, Rodenstock Retina Heligon 50mm f1.9.

Some old oak branches.



Looks great! I like that significantly more than the one with more DOF. But I know I'm the exception in that regard...


Thanks!

simple.joy wrote:
These were shot with my Optical Proiectar 35 mm f/1.6:


... and these two with my Optical Proiectar 50 mm f/1.6:


Good set! I like that 35mm. This is such a nice way to use these old lenses Smile I've never heard of them before!


PostPosted: Sat Mar 15, 2025 10:46 pm    Post subject: Reply with quote

e6filmuser wrote:
Birch Shieldbug with Parasite Eggs

A Birch Shieldbug Elasmostethus interstinctus, carrying five eggs of a tachinid fly parasite. The parasite is likely to be Phasia species.

Olympus EM-1, Kiron 105mm at f16, twin RC TTL flash, hand-held.



Another good one!


PostPosted: Mon Mar 17, 2025 10:48 pm    Post subject: Reply with quote

Like 1 Like 1 Happy Dog Happy Cat Like Dog Whoo Turtle Thank You Dog Thank you!

Most excellent folks!


PostPosted: Tue Mar 18, 2025 8:17 am    Post subject: Reply with quote

Bog Beacon Mitrula paludosa

These fungi were growing in a woodland, partly immersed in a shallow stream. This is the only time I have found them.

EM-1, Kiron 105mm macro, twin TTL RC flash, hand-held. Height about 20mm, half the maximum.




PostPosted: Tue Mar 18, 2025 7:12 pm    Post subject: Reply with quote

More with the Retina Heligon:


#1


#2


#3


#4


PostPosted: Tue Mar 18, 2025 8:34 pm    Post subject: Reply with quote

blotafton wrote:
More with the Retina Heligon:


The greens look good.


PostPosted: Wed Mar 19, 2025 9:38 am    Post subject: Reply with quote

e6filmuser wrote:
blotafton wrote:
More with the Retina Heligon:


The greens look good.


Thanks, I'm trying out a Canon color profile on my A7 on the first pair.

The standard profile worked better than usual on the rest.


PostPosted: Sun Mar 23, 2025 1:58 pm    Post subject: Reply with quote

New Broom, Old Lenses.

Here are the first of the broom shrub flowers of the year (2016).

I like the way the group of flowers splayed outwards.

Olympus EM-1, Kiron 70-150mm at f16 (Aperture Priority+twin TTL flash)




Last edited by e6filmuser on Wed Mar 26, 2025 7:38 am; edited 1 time in total


PostPosted: Wed Mar 26, 2025 7:38 am    Post subject: Reply with quote

Echinocereus salmdyckianus

EM-1, Kiron 105mm at f16, ISO 800, twin off-camera TTL flash.



PostPosted: Thu Mar 27, 2025 9:32 am    Post subject: Reply with quote

A couple of Roscoea hardy gingers.

Roscoea auriculata

Olympus EM-1, Kiron 105, f16, twin TTL RC flash, hand-held.




A pale yellow hybrid (?)

Sony A7r3, Printing-Nikkor 105mm, f11, hand held.




PostPosted: Thu Mar 27, 2025 12:03 pm    Post subject: Reply with quote

blotafton wrote:
More with the Retina Heligon:


#3


Great shots! I like this one in particular.


PostPosted: Thu Mar 27, 2025 3:42 pm    Post subject: Reply with quote

Schlumbergera microspherica flower.

This cactus is a separate species in the same genus as the Christmas/Easter/Holiday cactus but its leaf-like stems are sub-cylindrical. It is overall miniature in comparison. I have had this species for many years, finding it difficult to keep alive. To my surprise it has now produced a flower.

The lens (M39 mount) I used arrived today and I found the inside (front) of the rear element has extensive but fine fungus. This was a test to see how much it might affect images. I have seen no effect here but the subject is not the best test. Anyway, enjoy!

EM-1, Minolta Rokkor f4.5 75mm, f16, 85mm extension, FOV 22mm, twin RC flash, hand held.

I took shots at f11 and f16 but none at f11 were sharp.



PostPosted: Sat Mar 29, 2025 9:22 am    Post subject: Reply with quote

Forsythia

A73r, Rayfact MJ 90mm f4 at f8 1/100 sec, ISO 250, hand held. Cropped by about 1/3.