Mark once again `thankyou`. I have now sorted the centre AF point . I am assuming the use of A1 Servo whilst in the centre AF point (allowing for the subject moving during focus) wll be the correct setting to use - or - perhaps A1 focus, both in preference to `one shot` mode? that is for a non moving subject.
Trevor Rogers
Notable Recent Sightings
05/03 | Firecrest | 1, Lake Vyrnwy |
05/03 | Short-eared Owl | 1, Lake Vyrnwy |
14/01 | Pink-footed Goose | 1, Dolydd Hafren |
03/01 | Waxwing | 20, Meifod; also 5 Welshpool by canal on 01/01. Last: 6 Bwlch-y-Garreg 17/03 |
23/12 | Waxwing | Newtown College, first arrivals 04/12, 47 on 23/12, 67 on 01/01, 30 on 04/02 |
09/12 | Cattle Egret | 1 roosting with 8 Great Egrets and some Little Egrets, Llyn Coed-y-Dinas |
02/12 | Waxwing | 21 Guilsfield, 12 Montgomery, 1 Welshpool, and 1 on 01/12 Llanfyllin |
16/11 | Dotterel | 3, just west of Dyfnant Forest on RSPB land |
16/11 | Great Grey Shrike | 1, on edge of Dyfnant Forest on RSPB land, last reported 19/01 |
15/11 | Waxwing | 25 or 30, just west of Lake Vyrnwy along the Dinas Mawddwy road |
08/11 | Great Northern Diver | A juvenile was found near Anchor, rescued and released |
30/10 | Black Redstart | 1 in garden at Hendomen, near Montgomery |
06/10 | Hawfinch | 5 in treetops at Powis Castle, by main car-park |
04/10 | Cattle Egret | Dolydd Hafren, a flock of c.30 |
29/09 | Red-flanked Bluetail | Dyfnant Forest: a county first |
23/09 | Manx Shearwater | 1st year bird grounded in Llanfyllin; released at coast |
03/09 | Cattle Egret | 10 at Cors Dyfi, rising to 32 on 05/09 |
01/06 | Turnstone | 1 at Caersws with Little Ringed Plovers |
03/05 | Wood Sandpiper | 1 at Dolydd Hafren |
18/04 | BLACK-WINGED KITE | 1 video-ed at Glan Mule, near Kerry: a likely FIRST for UK |
07/04 | Black Redstart | Female on Carno roof |
07/04 | Little Ringed Plover | Llandinam Gravels |
25/03 | Osprey | Female 5F 'Seren' arrived back at Llyn Clywedog |
25/03 | Pied Flycatcher | An early migrant near Llanfechain |
22/03 | Hen Harrier | Female in flight near Berriew |
15/03 | Sand Martin | 5, Dolydd Hafren |
15/03 | Golden Plover | c.50, Heldre Hill, Long Mountain, nr Welshpool |
05/03 | Whooper Swan | 1, between Caerhowel (Montgomery) and The Gaer, with Mute Swans |
05/03 | Pink-footed Goose | 1, Caersws, with Canada Goose flock |
05/03 | Jack Snipe | 2, Caersws |
05/03 | Hawfinch | 24, Powis Castle, feeding behind orchard |
28/02 | Pink-footed Goose | c.25, flying north over Welshpool |
26/02 | Merlin | 1 male, chasing Meadow Pipit, Long Mountain near Welshpool |
26/02 | Pintail | 3, Llyn Coed-y-Dinas, 1 since 14 Feb |
14/02 | Hawfinch | 1, Powis Castle car-park, very vocal |
23/01 | Jack Snipe | 1, Moel-y-Garth near Guilsfield |
17/01 | Brambling | 80, in beeches at Pen-y-Waen near Cefn Coch with Chaffinches |
07/01 | Hawfinch | 2, bathing in puddle, Cwm Lane, Castle Caereinion |
See Sightings Archive for older records |
Tuesday, April 03, 2012
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Personally I'd leave it in AI Focus unless you know your subject's going to be moving, in which case use the AI Servo setting. AI Focus switches between Servo and One Shot, depending on whether your subject's moving or not, but there can be a delay before it recognises the subject is on the move.
ReplyDeleteHowever, if your subject is stationary, and you focus with the centre AF point then recompose to put the bird on one side of the frame, then in Servo mode the camera would refocus on the background, whereas AI Focus would detect that the subject isn't moving, and you've just changed composition.
Hope that makes sense,
Dan
I never use AI Focus on the bodies that have that facility - and the 1D doesn't have that option anyway - as it's a halfway house between Servo and One Shot. For birds as they are never stationary I always use servo as with the other menu options on the 1D that gives me the best results - the 350D is different though so suggest you trial and error and see what's best for you.
ReplyDeleteMajority of time I'm using the centre AF point (with expansion when that's needed) and for 99% of the shots use spot metering on that point (1D allows you to specify spot metering on the active AF point so if you move th point around the metering goes with it but suspect the 350 doesn't have that option). And other point is that I always focus on the eye - if that's sharp I don't really care about the rest!
OK armed with your info I will venture into the `Marches wilderness` over Easter, just need bit more light maybe, but that is looking doubtful.
ReplyDeletethanks both
Trevor Rogers
No problem Trevor - I normally start wherever I'm going at ISO400 and work up or down from there, on the 1D can easily get decent pics at higher ISO, just needs a bit more work in Lightroom. Start there and see what that gives you
ReplyDelete