p.24 #1Sony FE 100-400mm f/4.5-5.6 GM Image Thread
gordec wrote:
I just got the 1.4 TC. At the extreme end 560mm, I'm getting soft pictures with a7rii regardless of what I do. I was hand holding. Is it a problem with the rii? Without the TC, the pictures are tack sharp at 400mm.
How far away from the bird are you?
To me, it looks like atmospheric hazy or heat waves blurring your shots.
It could be coming up from a road, shooting over the hood of a car, lots of stuff can cause this.
In the winter I get this a lot trying to shoot from the car out the window.
The heat in the car flows out the open window and gets me every time.
I have even had it when I got out of the car, but the warm air trapped in the lens hood affected the shot as it started to
change over to the cooler air outside.
p.24 #2Sony FE 100-400mm f/4.5-5.6 GM Image Thread
gordec wrote:
I just got the 1.4 TC. At the extreme end 560mm, I'm getting soft pictures with a7rii regardless of what I do. I was hand holding. Is it a problem with the rii? Without the TC, the pictures are tack sharp at 400mm.
I had the same set (without the TC), and the same problems. Blurry images at more than 25 meters, in a totally wild environment. I changed A7RII with A9. No more problems. It looks like (counting out haze, if there's haze the problem can be that or that will worsen things) A7RII have problems in getting perfectly focused subjects at distance, which I cannot find with A9 (ok, it would be a shame if the contrary... Given the target of that body, but notwithstanding that, a day-and-night difference).
p.24 #3Sony FE 100-400mm f/4.5-5.6 GM Image Thread
gordec wrote: dshao1 wrotegordec wroteI just got the 1.4 TC. At the extreme end 560mm, I'm getting soft pictures with a7rii regardless of what I do. I was hand holding. Is it a problem with the rii? Without the TC, the pictures are tack sharp at 400mm.Hi, Is it possible the A7R2 cannot use PDAF at F/8?
I know the A7R3 can use PDAF AF up to F/8 and the A7R4 will be able to use PDAF AF up to F/11, but I forget what the PDAF limit is for the A7R2.Rii should do PDAF. At f11, I think it's when it becomes contrast only.
I saw some others with a7rii and 1.4 getting really sharp shots at 560mm. Maybe i need to check the camera settings.
Interesting, I would be very surprised if the A7R2 could use PDAF with AF-C below F/11 when the A7R3 can only use PDAF with AF-C up to F/8.
I'm still guessing this and/or atmospherics (as others have mentioned) may be part of the reason for the BIF shot you posted. The sharp shots at 560mm with an A7R2 that you saw, were the birds stationary or in flight?
I get hit and miss with BIF using the same lens and TC with the R3. Just glad that it can shoot multiple shots per second...so while my hit rate is not as high as I would like, I can usually pick a few sharp ones.
p.24 #4Sony FE 100-400mm f/4.5-5.6 GM Image Thread
Photo cross posted in the Sony FE Image Thread and taken at 5:47 PM.
Looking across the marsh at an Alligator basking in the sun.
Cropped; tripod mounted 100-400mm GM lens set to 400mm and A7rIII.
ISO 100, f5.6, 1/320 second
Exposure corrected +0.83 Stops
May 11, 2019
At Gatorland, Orlando or Kissimmee, FL
p.24 #9Sony FE 100-400mm f/4.5-5.6 GM Image Thread
Photo cross posted in the Sony FE Image Thead and taken at 7:47 PM.
Looking down from the top of the Preserve,
Tripod mounted 100-400mm f4.5-5.6 GM set to 250mm and A7rIII, silent shutter.
ISO 200, f14,1/15 second,
Exposure corrected +0.12 Stops
July 15, 2019
From the top of the Trexler Nature Preserve, Schnecksville, PA.
p.24 #11Sony FE 100-400mm f/4.5-5.6 GM Image Thread
Photo cross posted in the Sony FE Image Thread and taken at 9:50 AM.
Looking at a Great Blue Heron inverting its wings to sun itself
Tripod mounted 100-400mm GM lens set to 342mm and A7rIII.
ISO 100, f5.6, 1/250 second
Exposure corrected +0.71 Stops
May 11, 2019
At Gatorland, Orlando or Kissimmee, FL
p.24 #12Sony FE 100-400mm f/4.5-5.6 GM Image Thread
Photo cross posted in the Sony FE Image Thread and taken at 7:25 PM.
Looking at Kids Peace from the top of the Environmental Center.
Tripod mounted 100-400mm GM zoom lens set to 121mm and A7rIII, silent shutter
ISO 400, f16, 1/50 second; exposure corrected +0.24 Stops
August 3,2019
From the top of the Trexler Nature Preserve Environmental Center, Schnecksville, PA