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

k-hawinkler

Well-known member
Here are some other flight acrobatics by the obviously stressed out Hummingbirds.
Apparently they can't believe the danger they are in, so have to have a real good look at the Mantis.









Sony A7r2 + Leica AA 75/2
 

k-hawinkler

Well-known member
After, even such a small meal as a bee, it's time to clean up. However, there is still a piece of the bee on the back of her head.




Another view of the front part of her arms shows they also function as legs with feet.



A7r2 + FE 90/2.8 MACRO G OSS
 
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k-hawinkler

Well-known member
Dark-eyed Junco



Sony A7r2 + Leica APO-Telyt-R 280/4 + APO-Extender-R 2x, shot WO - so f/8 - on Induro Tripod AT-413 with Gimbal Head GHB2.
IBIS was ON, set to 300 mm. I forgot to turn it OFF or to select 500 or 600 mm. There is no 560 mm to select.

Please not the very shallow DoF, visible on the board the bird sits on. The Junco's eyes are in focus but not its beak.
I had not shot these kinds of shots for awhile and sort of forgotten how good the 280/4 really is, even with an 2x extender.
My take, I should no longer be tempted to get an older manual focus only 500 or 600 mm lens from Canon or Nikon. :grin:
 

algrove

Well-known member
Enjoyed this thread K-H. You lost me on the technical stuff, but the images speak for themselves. I miss my 280/4 when seeing yours, but for now am pleased I kept my APO 180/2.8 and often use it with the 2x for landscape only and rarely for that.
 

k-hawinkler

Well-known member
Late Afternoon Sun on the Tyuonyi Overlook Trail at Bandelier National Monument



Sony A7r2 + Leica Vario-Elmarit-R 28-90/2.8-4.5 ASPH.
 

k-hawinkler

Well-known member
We have heard migrating Sandhill Cranes overhead for at least a week.
They are flying very high, but I finally managed to get a shot of them.



A7r2 + APO-Telyt-R 180/3.4, image uncropped.
 

k-hawinkler

Well-known member
Frijoles Canyon of Bandelier National Monument

The Tyuonyi Overlook Trail ends middle right on top of the mesa, giving a nice overview from the opposing side.
The Frey Trail begins adjacent to the Tyuonyi Overlook Trail near the Juniper Campground.
However, one can walk that trail all the way to the Canyon bottom.
The trail descends pretty steeply in the dark area of the image, center right.
The sole access road, bottom left, leads to the Visitor Center, nestled among the trees.

From this Overlook Point I heard and saw yesterday a large number of Sandhill Cranes flying in formation way above Bandelier at the cloud level from right to left. :D
Another two to three hours of flying for them and they will arrive at the Bosque del Apache National Wildlife Refuge

About Bosque del Apache National Wildlife Refuge, New Mexico



Sony A7r2 + Leica Vario-Elmarit-R 28-90/2.8-4.5 ASPH.
 

k-hawinkler

Well-known member
I am getting ready to compare some lenses on A7r2 and A7r2m, modified by Kolari, in collaboration with hiepphotog.

This example is shot WO with A7r2 + WATE @ 16 mm, processed with C1 and displayed at quarter size.



Full resolution images can be found here:

f/4.0 https://winklers.smugmug.com/KHW/Pi...-pVGjczX/0/O/_DSC5323_C1_360_0.4_0.8_Full.jpg
f/5.6 https://winklers.smugmug.com/KHW/Pi...-H577Gx7/0/O/_DSC5324_C1_360_0.4_0.8_Full.jpg
f/8.0 https://winklers.smugmug.com/KHW/Pi...-t5Bcgr5/0/O/_DSC5325_C1_360_0.4_0.8_Full.jpg
f/11. https://winklers.smugmug.com/KHW/Pi...-7nRP9J3/0/O/_DSC5326_C1_360_0.4_0.8_Full.jpg
f/16. https://winklers.smugmug.com/KHW/Pi...-F5g5zQL/0/O/_DSC5327_C1_360_0.4_0.8_Full.jpg
f/22. https://winklers.smugmug.com/KHW/Pi...-36PPGg3/0/O/_DSC5328_C1_360_0.4_0.8_Full.jpg

BTW, Sandia Peak near Albuquerque is in the center of the image, the San Miguel Mtns further to the right. :grin:
 
Thx for posting! When I use 16mm I shoot mostly at f11, at which point a bit of diffraction must have set in; but it allows for reasonably sharp foreground corners and "100%" DOF. Maybe I could back off to f8, with such short focal length.

Kirk
 

k-hawinkler

Well-known member
Thx for posting! When I use 16mm I shoot mostly at f11, at which point a bit of diffraction must have set in; but it allows for reasonably sharp foreground corners and "100%" DOF. Maybe I could back off to f8, with such short focal length.

Kirk
Thanks Kirk.
To my aging eyes it looks like this for 16 mm.

The major stepup in sharpness is from f/4 to f/5.6.
I use f/5.6 a lot if I need a fairly fast shutter speed.
The lens' performance seems to peak at f/8.
That's what I use if neither fast shutter speed nor large DOF is important.
At f/11 diffraction seems to have already set in, ever so slightly.
At f/16 a bit more.
But depending on how much DOF one needs, I use both those apertures.
At f/22 sharpness has fallen off a cliff, so I never use that - except for testing! :grin:

BTW, having lived in Berkeley I enjoy your B&W images.
Some of those places look familiar. :)
 
I am getting ready to compare some lenses on A7r2 and A7r2m, modified by Kolari, in collaboration with hiepphotog.

This example is shot WO with A7r2 + WATE @ 16 mm, processed with C1 and displayed at quarter size.



Full resolution images can be found here:

f/4.0 https://winklers.smugmug.com/KHW/Pi...-pVGjczX/0/O/_DSC5323_C1_360_0.4_0.8_Full.jpg
f/5.6 https://winklers.smugmug.com/KHW/Pi...-H577Gx7/0/O/_DSC5324_C1_360_0.4_0.8_Full.jpg
f/8.0 https://winklers.smugmug.com/KHW/Pi...-t5Bcgr5/0/O/_DSC5325_C1_360_0.4_0.8_Full.jpg
f/11. https://winklers.smugmug.com/KHW/Pi...-7nRP9J3/0/O/_DSC5326_C1_360_0.4_0.8_Full.jpg
f/16. https://winklers.smugmug.com/KHW/Pi...-F5g5zQL/0/O/_DSC5327_C1_360_0.4_0.8_Full.jpg
f/22. https://winklers.smugmug.com/KHW/Pi...-36PPGg3/0/O/_DSC5328_C1_360_0.4_0.8_Full.jpg

BTW, Sandia Peak near Albuquerque is in the center of the image, the San Miguel Mtns further to the right. :grin:
I have to admit I'm pretty excited to meet another GetDPI-er, for camera/lens testing no less :D. A day trip for me but it would be totally worth it.

And thank you for posting the full-res of all apertures here. Diagonal test like this is very revealing, IMO. It does show the wavy field curvature nature of the WATE at large aperture. Looking forward to next weekend.
 
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