Thème personnel, focus stacking

Thème personnel, focus stacking

Photographed using Fuji GFX 50s on Cambo Actus view camera with Cambo Actar 105mm macro lens set at 1.25 X magnification at f8. ISO 100 1.7 sec. Focus stack of 108 images.

Lacks chlorophyll, so it is a parasitic, specifically a mycoheterotroph. Its hosts include fungi in the Russulaceae family that are mycorrhizal with trees; hence, it ultimately gets its food from trees.

(focus stacking: 5 images

Vancouver, British Columbia, Canada

This is an image created using a focus rail to take 59 images, camera set to manual focus and then focus stacked in Affinity photo

Masked and removed background and replaced with a black background.

Focus stacking exercise - 30 frames with Z7 and 50MC macro lens

Most of what is visible here appears to be oyster shell material, plus one dark glass fragment/sea-glass-like piece.

Identification

1) Left shell

A single oyster valve, shown interior-side up.

Most likely from an oyster rather than a clam or scallop because it is:

thick, heavy, and irregular rather than symmetrical

strongly layered

broadly elongated instead of fan-shaped

showing the typical rough growth accretions of an oyster shell

Oyster shells consist of two valves, and in many oysters one valve is flatter while the other is more cupped. Their shells are notably variable in shape, depending on where and how they grew.

Visible details in your specimen:

creamy white to tan shell

orange-brown iron-like staining along growth edges

a smooth inner surface with a darker, elongated adductor muscle scar area

obvious laminated shell buildup along the margin

That darker inner scar is consistent with the place where the oyster’s main closing muscle attached.

Oyster interiors often show a pale to purplish muscle-scar area.

2) Center shell

Another oyster valve, this time shown mostly from the outer surface.

This is the roughest and most sculptural piece in the arrangement. It shows:

dark gray to charcoal

weathering

pronounced folded ridges

stacked growth lines

a heavy, thick shell body

That crumpled, irregular relief is typical of oyster shells, which often grow attached to hard surfaces or to one another, causing very uneven shell form.

Oyster shell shape is highly variable and often distorted by crowding, attachment, and substrate.

3) Right shell

A third oyster valve, also interior-side up.

This one appears more bowl-like and worn, with:

pale cream interior

a rounded interior basin near the hinge area

gray-black weathering and attached residue on the margin

chipped edges from wear or breakage

The cupped form fits the general oyster pattern in which one valve is more concave and provides more internal space for the animal.

4) Bottom foreground shell fragment

A long, flattened oyster shell fragment or valve fragment laid horizontally in front.

It looks weathered and thinned, with:

long laminated edge structure

muted tan, cream, and gray bands

a smoothed, beach-worn appearance

remnants of the inner shell surface and darker stained areas

This piece reads as the most abraded shell in the group, probably water-worn longer than the others.

5) Dark rounded fragment at lower right

This is most likely a glass fragment, probably sea glass or a wave-worn shard of thick glass.

I would not call the exact original object with confidence.

Why it looks like glass:

one side is smooth and translucent

the opposite side is distinctly frosted

the edges are rounded rather than sharp

t

he interior shows colored depth that shell or stone would not usually show in this way

Authentic sea glass forms when broken glass is physically abraded and chemically weathered in water, producing rounded edges and a frosted surface. Common colors are clear, brown, and green, while darker or unusual tones can occur depending on source glass.

What the whole arrangement is

This is essentially a still life of marine beach finds:

several oyster shell valves/fragments

one weathered glass fragment

arranged on a warm brown/orange surface that emphasizes the cream, gray, and dark violet-black tones

Visually, the set has strong contrast between:

matte, chalky, layered shell

dense, ridged, sculptural shell relief

smooth/translucent versus frosted glass

warm background against cool gray and off-white subjects

Level of confidence

Oyster shells / oyster shell fragments: high confidence

Specific oyster species: low confidence from image alone

Dark fragment as sea glass / weathered glass: moderate confidence

Exact source of the glass fragment: insufficient information

Focus stacking of 24 done in Helicon Focus

The Schoolgirl rose has lost some of its petals, but the details exposed make it even more interesting.

Focus stacked image. Seven images stacked and initial development in ON1 2019. Cropping and final post processing in Lightroom. Satisfied with the result.

365/168 - Year 7 Photo 2359

Took 11 shots of apple in different focus and used PS C5 to stack them. The apple is sharp from the front to the rear.

Panasonic GX 80 + 2.8/30 mm Makro + HeliconFocus + LR6

These rattlesnake are tiny compared to their cousins. This one was approximately 20 inches long. They are easy to miss since they spend their time curled up in ambush near on the ground (another common name is Ground Rattler), and though common in parts of the Southeastern U.S., very infrequently seen in Mississippi.

42 image stack using Helicon Focus method A.

Noticed the ground spider webs were covered in dew this morning- tiny drops < 0.5mm. Focus stacked from 4 pics and inverted

Focusstack aus 163 Bilder / Images

Schrittweite / Step 0,035 mm

Used focus stacking for this, courtesy of Olympus E-M1.

... on a tree bark. Focus stack with ca. 10 images.

These large, spectacular flowers are, sad to say, ephemeral, each lasting only a couple days.

Vespa velutina 50 stacks, Objectif micro achromatic chinois 10x 0,24 , 160. Wemacro rail. HF, LR.

Cryptocephalus sp. (?). Stack of 12 images.

Did a few flower macros for this one but decided to try something that I have not done before which is Focus Stacking. Listened to a few podcasts & watched a few videos. Learned a lot this week! Thanks for the challenge.

Focus stacked from 2 pics

click the "+" to view large

Focusstack 19 opnamen losse hand 6 f/s

Photographed using Fuji GFX 50s on Cambo Actus view camera with Cambo Actar 105mm macro lens set at 1.25 X magnification at f5.6 ISO 100 1.5 sec. Focus stack of 11 images.

Prototype of IBM POWER3-II

(dpi = die-size)

HP PA-8500

Prototype of UltraSPARC T2

(dpi = die-size)

Sony NEX 6 - Minolta macro 50 f/2,8 + Kenko Macro Extension Tube - f/13 - Iso 400 - 1/200 sec. - Yongnuo 560 III with DIY Diffuser - Macro rail - Focus Stacking 7 shots

Focusstack, aus

136 Bilder, with 136 Images, Schrittweite/Step length 0,01 mm

Massstab / Scale 15:1

Nikon BD Plan 10 0,25 210/0

Kopfbreite / Headwide 1,8 mm

Focusstacking

Focusstack, aus

255 Bilder, with 255 Images, Schrittweite/Step length 0,015 mm

Corymbia ficifolia, Red-flowering Gum

This species was widely planted in my little town, Morro Bay, CA, many years ago.

"Eucalypts are the most widespread of California's cultivated trees." -- Matt Ritter, Cal Poly SLO botanist, in "A Californian's Guide to the Trees Among Us." I think he uses the term, "eucalypt" to mean all of several related genera.

9 image stack

Experimenting with some macro

I'm testing focus stacking for the first time. I'm using Zerene Stacker (zerenesystems.com/cms/stacker) as it seems to be the only one available for Linux. It's really easy to use.

This one uses 9 images taken with Nikkor 55/3.5 at f/5.6.

Taken at 3.8:1 this is the result of a focus stack error but liked the result

Nah dran