Just started my evaluation. Many images to process but here are a couple of screen shots to start, and some odd observations.
1) Using manual shutter speed and aperture selection and auto ISO, the 300 GM with 2X TC always used a higher ISO by 1/3 stop than the 600mm f6.3 when both are at f6.3. No idea why, but the deferences in brightness make it hard to assess sharpness. When adjusted they look very similar.
2) in shooting the 400-800 at 800mm it had no problem with eye detect on my mock hummer. At 600mm it struggled at eye detect where the 300/2X and the 600 6.3 did not. All did fine on mock cardinal.
Shots are manual except auto ISO, VR is on, in AFC and medium frame rate. Camera is on a sling or strap style gimbal. This is how I would shoot bird on stick.
More will follow as I process
I included one poorly done uncooperative bird to show bokeh and 100% crop from the 600mm f6.3
600 f6.3 on left 300/2X on right both at 100%
300/2X on left this time and 600 6.3 on right
full image
ILCE-1M2FE 600mm F6.3 GM OSS lens600mmf/6.31/2500s1250 ISO-1.0 EV
100% crop from above image
ILCE-1M2FE 600mm F6.3 GM OSS lens600mmf/6.31/2500s1250 ISO-1.0 EV
billsnature wrote:
Just started my evaluation. Many images to process but here are a couple of screen shots to start, and some odd observations.
1) Using manual shutter speed and aperture selection and auto ISO, the 300 GM with 2X TC always used a higher ISO by 1/3 stop than the 600mm f6.3 when both are at f6.3. No idea why, but the deferences in brightness make it hard to assess sharpness. When adjusted they look very similar.
2) in shooting the 400-800 at 800mm it had no problem with eye detect on my mock hummer. At 600mm it struggled at eye detect where the 300/2X and the 600 6.3 did not. All did fine on mock cardinal.
Shots are manual except auto ISO, VR is on, in AFC and medium frame rate. Camera is on a sling or strap style gimbal. This is how I would shoot bird on stick.
More will follow as I process
I included one poorly done uncooperative bird to show bokeh and 100% crop from the 600mm f6.3...Show more →
I'm glad you were using the 5oMP A1ii for these evaluations, because the diffraction with the A7r6 would have been absolutely horrific, deal-breaker, throw-away garbage!
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sarcasm
ps09 wrote:
I'm glad you were using the 5oMP A1ii for these evaluations, because the diffraction with the A7r6 would have been absolutely horrific, deal-breaker, throw-away garbage!
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sarcasm
