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A7r, A7r2 - and why I'm keeping both ...

k-hawinkler

Well-known member
At Cruising Altitude



Sony ILCE-9 + FE 400 mm F2.8 GM OSS + 2X TC @ 800 mm, f/5.6, 0.0005s (1/2000), ISO 400.
 

k-hawinkler

Well-known member
American Robin in Juniper Tree



Sony ILCE-9 + FE 400 mm F2.8 GM OSS + 2X TC @ 800 mm, f/5.6, 0.0005s (1/2000), ISO 4000.
 

k-hawinkler

Well-known member
String of Migrating Sandhill Cranes







Sony ILCE-9 + FE 400 mm F2.8 GM OSS + 2X TC @ 800 mm, f/5.6, 0.0005s (1/2000), ISO 400.

In another 2 or 3 hours the Cranes will arrive at the Bosque del Apache National Wildlife Refuge in the Middle Rio Grande Valley.

To get there by car form our location takes about an extra hour. :facesmack:
 

k-hawinkler

Well-known member
Formation Flying to Thermal Circling







Sony ILCE-9 + FE 400 mm F2.8 GM OSS + 2X TC @ 800 mm, f/5.6, 0.0005s (1/2000), ISO 320.
 

k-hawinkler

Well-known member
Sandhill Cranes in a Thermal

I want to document for my own amusement how the Sandhill Cranes fly around and around in a thermal to get higher and higher in order to proceed with the next leg of their bi-annual migration journeys until they need and find another thermal. And the process is repeated.

From the many hundreds of images I shot, I kept 38, deleted the others. Technically there was nothing wrong with them, I simply don't need the deleted images to tell the story.

I have in consecutive order divided these 38 images into 4 groups, labeled Thermal 1 through Thermal 4.

Thermal 1: the first 11 images
Thermal 2: the next 10 images
Thermal 3: the next 9 images
Thermal 4: the final 8 images

All images were shot with

Sony ILCE-9 + FE 400 mm F2.8 GM OSS + 2X TC
@ 800 mm, f/5.6, 0.0005s (1/2000).


ISO varies slightly from frame to frame.

I cut linear image size in half. So the images are either 3kx2k or smaller.
Hoping you will enjoy these many images :clap: or ignore them. :facesmack:
Here we go. :grin:
 
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k-hawinkler

Well-known member
Robin thru Glass Door. Quick Shot before it gets Dark. Un-cropped. :grin:



Sony ILCE-9 + FE 400mm F2.8 GM OSS + 1.4X TC @ 560.0 mm, f/4, 0.00156s (1/640), ISO 2500.


Robin against Grass



Sony ILCE-9 + FE 400mm F2.8 GM OSS + 1.4X TC @ 560.0 mm, f/4, 0.00156s (1/640), ISO 640.
 
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k-hawinkler

Well-known member
From Left to Right:
Mountain Bluebird, Junco, Western Bluebird, House Finch, probably another Junco. :grin:



Sony ILCE-9 + FE 400mm F2.8 GM OSS (SEL400F28GM) @ 400.0 mm, f/8, 0.00156s (1/640), ISO 640.
 

k-hawinkler

Well-known member
Northern Flicker in Tree :shocked:



Sony ILCE-9 + FE 400 mm F2.8 GM OSS + 1.4X TC @ 560 mm, f/4, 0.0008s (1/1250), ISO 250.
 

k-hawinkler

Well-known member
Townsend's Solitaire



Sony ILCE-9 + FE 400mm F2.8 GM OSS + 1.4X TC @ 560 mm, f/4, 0.0008s (1/1250), ISO 160.




Sony ILCE-9 + FE 400mm F2.8 GM OSS + 1.4X TC @ 560 mm, f/4, 0.0008s (1/1250), ISO 800.
 
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k-hawinkler

Well-known member
Robin Environmental Portrait



Sony ILCE-9 + FE 400mm F2.8 GM OSS + 1.4X TC @ 560 mm, f/4, 0.0008s (1/1250), ISO 320.
 

k-hawinkler

Well-known member
Migrating Sandhill Cranes, Flying Pretty Low,
Will Need Another Thermal Soon To Gain Hight.



Sony ILCE-9 + FE 400mm F2.8 GM OSS + 1.4X TC @ 560 mm, f/4, 0.0004s (1/2500), ISO 400.


If we compare a

Sony A9, 5.90 µm + 400 mm lens with a
Fuji 50S, 5.31 µm + 1.4x TC + 250 mm lens we find

(400/350) * (5.31/5.90) = 1.03, so about 3% more detail or resolution for this A9 system.


And if we compare a

Sony A9, 5.90 µm + 400 mm lens without or with a + 1.4x TC with the
Fuji GFX 100, 3.75 µm + 250 mm lens without or with a + 1.4x TC we find

(400/250) * (3.75/5.90) = 1.02, so about 2% more detail or resolution for this A9 system.
(560/350) * (3.75/5.90) = 1.02, so about 2% more detail or resolution for this A9 system.

The subject image size we get is linear with respect to lens focal length and the inverse of the camera pixel pitch.

So in terms of detail or resolution captured, replacing the 50S with the GFX 100, is about the same as adding a1.4x TC to the 50S.

Similarly the A9 + 400 mm lens resolves about the same detail as the 50S + 250 mm lens and with a 1.4x TC.
For the same lenses mentioned above, A9 and GFX 100 compare detail resolution wise both without or with a 1.4x TC each.
 

gandolfi

Subscriber Member
Good stuff, K-H,

Do you live in an aviary?

Good to see the Sandhill Cranes back again.

Some of the birds have such lovely names.

All the best.
 

k-hawinkler

Well-known member
Good stuff, K-H,
Do you live in an aviary?
Good to see the Sandhill Cranes back again.
Some of the birds have such lovely names.
All the best.

Many thanks gandolfi. I appreciate your interest and feedback.

The bird population in our backyard changes with the seasons and over the years tremendously. Some move locally, from higher (up to 13,000 feet) to lower (down to about 5,000 feet around here) ground and vice versa. Others (e.g. some Hummingbirds) cover a range from Mexico to Alaska. :shocked: :loco:

Some time ago I made this list of birds that I have actually taken pictures of in/from my backyard over the last decade. Of course, they don't show up all at the same time. May be half a dozen to a dozen species at a time.

For example several years ago in the winter we counted several dozen American Robins in our backyard at the same time getting their drinks of water. In other years/seasons none of them showed up.

Here is my list:

American Robin, (leucistic)
Blue Jay (real name: Woodhouse's Scrub-Jay)
Bluebird, Mountain
Bluebird, Western
Bushtit
Canyon Towhee
Cassin’s Finch
Cassin’s Kingbird
Cedar Waxwings
Clark's Nutcracker
Cooper's Hawk
Cowbird
Dark-eyed Junco
Dove, Eurasian Collared
Dove, Mourning
Grosbeak, Black-headed
Grosbeak, Evening
Hermit Thrush
House Finch
House Sparrow
House Wren
Hummingbird Black-chinned
Hummingbird Broad-tailed
Hummingbird Calliope
Hummingbird Rufous
Juniper Titmouse
Lesser Goldfinch
Mountain Chickadee
Northern Flicker
Pine Siskin
Raven
Red-naped Sapsucker
Rock Pigeon
Sandhill Crane
Scaled Quail
Spotted Towhee
Steller's Jay
Swift
Thrasher, Curve-billed
Thrasher, Sage
Townsend’s Solitaire
Turkey Vulture
Western Tanager
White-breasted Nuthatch
White-crowned Sparrow
Woodpecker, Downy
Woodpecker, Hairy
Yellow Warbler


Enjoy, Karl-Heinz.
 
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