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07-07-2019, 04:55 PM - 8 Likes   #31381
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Bigma @ nominal 400mm, African giant kingfisher with a crab that he repeatedly bashed against the cement. It's a wonder the crab wasn't reduced to mush. It's a wonder the kingfisher didn't get a splitting headache.

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07-07-2019, 06:15 PM - 2 Likes   #31382
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Whistling Kite.
K-3 ii, DFA 150-450 handheld. See exif for shot details.

Cheers,
Terry
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07-08-2019, 02:16 AM - 14 Likes   #31383
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A few recent pictures with my K-3ii/FA*600mm F4 ED [IF]/Eckla window mount.

















07-08-2019, 03:12 AM - 4 Likes   #31384
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Waterbuck, looking handsome, even noble, something they do easily.

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07-08-2019, 05:03 AM - 13 Likes   #31385
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Sharing the Lesser Whistling Duckling family, the cute ducklings were reduced from the total of 11, only left with 4 on last week

Still need about one month plus to fledge..









07-08-2019, 09:39 PM - 16 Likes   #31386
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Black Kite.
K-3ii, DFA 150-450 handheld. See exif for shot details.

Cheers,
Terry
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07-09-2019, 04:13 AM - 4 Likes   #31387
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QuoteOriginally posted by Chris Mak Quote
Light had to get really merciless for the DA560 to give in to atmospheric distortions
Interesting comment that. I was quite disappointed with my new 300mm DA* F4 1.4 TC WR combination in the heat of the day with atmospheric distortions, but when it is a bit cooler everything works fine....

This one posted the street threads shows quite considerable distortions of the further vehicle. Taken with 300 before I acquired the TC. Will a longer reach, good quality lens like the DA560 make it better? Then my life will be difficult, because I then will try to get one

07-09-2019, 05:06 AM   #31388
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QuoteOriginally posted by Basie Quote
Interesting comment that. I was quite disappointed with my new 300mm DA* F4 1.4 TC WR combination in the heat of the day with atmospheric distortions, but when it is a bit cooler everything works fine....

This one posted the street threads shows quite considerable distortions of the further vehicle. Taken with 300 before I acquired the TC. Will a longer reach, good quality lens like the DA560 make it better? Then my life will be difficult, because I then will try to get one



Those distortions are caused by scintillation, an atmospheric effect due to thermal air movement.


No lens can get rid of it. But since it is more noticeable with tele lenses, to get rid of it as a visual distraction, use a wide lens. But that is not how you wanted to frame.

07-09-2019, 09:56 AM - 9 Likes   #31389
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Female rose-breasted grosbeak. Pana-Leica 100~400mm @ 400mm on a Pana GX8
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07-09-2019, 11:51 AM - 12 Likes   #31390
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Blue Angels @ Kansas City Airshow
K-1 mII, M400f5.6
07-09-2019, 11:59 AM - 13 Likes   #31391
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07-09-2019, 12:43 PM   #31392
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I really like the framing on that little lizard guy
07-09-2019, 12:44 PM - 9 Likes   #31393
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Barn swallows. K1+D-FA150-450.

Last edited by biz-engineer; 07-09-2019 at 01:07 PM.
07-09-2019, 01:01 PM   #31394
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QuoteOriginally posted by WPRESTO Quote
Female rose-breasted grosbeak. Pana-Leica 100~400mm @ 400mm on a Pana GX8
The small sensor DoF advantage is quite visible....

What do you find is the practical diffraction limit?
07-09-2019, 01:23 PM   #31395
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QuoteOriginally posted by normhead Quote
The small sensor DoF advantage is quite visible....

What do you find is the practical diffraction limit?
I have not tested to determine, but I almost never use smaller than f11 on any of the MFT lenses, and very rarely go to f16 on any FF lenses with the exception of two macros: Tokina 90mm f2,5 and Pentax SMCA ED 200mm f4. When doing macro with FF the considerable gain in DOF igoing from f11 to f16 more than overcomes any diffraction loss of IQ (IMHO).
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