[A700] C'est l'A700 le meilleur boîtier en AF-C?
Publié : Lun 21 Avr 2008 20:16
Voilà la polémique, et bien, dans ce cas la nouvelle a un origin Pentaxiste:
Bien, le couple A700 + 70-200/2.8 arrache à les autres couples, et inclus des boîtiers tres PRO et chers (voir Nikon D3, Canon Eos 1Ds MK III)...
Source: fotoMAGAZIN (Germany) (fotoMagazin), Nr. 5/2008, p30ff.
Results
Gear:
*40D: Canon 40D + EF 70-200 f/2.8 L IS USM (3230,- € German list price)
*1D: Canon 1D-mkIII + EF 70-200 f/2.8 L IS USM (6390,- € German list price)
*1Ds: Canon 1Ds-mkIII + EF 70-200 f/2.8 L IS USM (10290,- € German list price)
*D80: Nikon D80 + Nikkor 70-200 f/2.8 VR G IF-ED (3260,- € German list price)
*D300: Nikon D300 + Nikkor 70-200 f/2.8 VR G IF-ED (4120,- € German list price)
*D3: Nikon D3 + Nikkor 70-200 f/2.8 VR G IF-ED (7140,- € German list price)
*E3: Olympus E3 + Zuiko 50-200 f/2.8-3.5 ED SWD (3100,- € German list price)
*K20: Pentax K20D + DA* 50-135mm f/2.8 ED IF SDM (2180,- € German list price)
*A700: Sony Alpha 700 + 70-200 f/2.8 G SSM (3800,- € German list price)
(Order and prices as chosen by original print, K20 has best price in the field due to affordable DA* lens.)
Result (Test #4 -- Relative ratio of out-of-focus shots, central AF):
*A700: 2.1 %
*40D: 6.4 %
*D3: 9.2 %
*D300: 10.0 %
*1D: 11.7 %
*1Ds: 14.3 %
*E3: 17.8 %
*D80: 23.2 % (but 10.7 % with multi-field AF)
*K20: 25.6 % (and 43.6 % with multi AF)
Result (Test #3 -- Absolute number of in-focus shots, central AF):
1*1D: 30.2 images
2*D3: 21.6 images
3*40D: 20.6 images
4*A700: 15.3 images
5*1Ds: 15.0 images
6*D300: 13.5 images
7*D80: 8.6 images (10.7 with multi AF)
8*E3: 7.4 images
9*K20: 5.8 images
3.7 images (with multi-field AF, other multi-field AF results ommitted here)
Method:
Continous shots (burst, continous AF aka AF.C) of an approaching red Chrysler PT cruiser, tripod mounted and panned centering onto radiator grill. Photograph besides road. Road straight. Test done on a closed military airport.
Controlled speed: 100 km/h (62 mph).
Starting photo burst at 100m distance (109 yards, 328 ft). Stopping when passing by.
Time to drive through 100m: 3.6s.
Focal length: 35mm equivalent of 200mm (135mm for K20).
Aperture: f/2.8 or widest (Olympus).
Shutter: 1/320 or shorter.
Light: Daylight overcast with grayness. Constant conditions.
Storage: JPEGs onto Sandisk Extreme III.
Statistics: 6 series, averaged.
If I may make my personal scale:
Outstanding: 95-100% (relative ratio of in-focus shots)
Excellent: 85-95%
Good: 75-85%
Average: 25-75%
Poor: 0-25%
Then I get:
Outstanding: A700
Excellent: 40D, D3, D300, 1D, 1Ds
Good: E3, D80, K20
Nothing to complain about. Of course, this is a representative test for AF.C performance (probably the best been published to date). It is nowhere indicative for low light AF.S performance.
Amitiés...
Bien, le couple A700 + 70-200/2.8 arrache à les autres couples, et inclus des boîtiers tres PRO et chers (voir Nikon D3, Canon Eos 1Ds MK III)...
Source: fotoMAGAZIN (Germany) (fotoMagazin), Nr. 5/2008, p30ff.
Results
Gear:
*40D: Canon 40D + EF 70-200 f/2.8 L IS USM (3230,- € German list price)
*1D: Canon 1D-mkIII + EF 70-200 f/2.8 L IS USM (6390,- € German list price)
*1Ds: Canon 1Ds-mkIII + EF 70-200 f/2.8 L IS USM (10290,- € German list price)
*D80: Nikon D80 + Nikkor 70-200 f/2.8 VR G IF-ED (3260,- € German list price)
*D300: Nikon D300 + Nikkor 70-200 f/2.8 VR G IF-ED (4120,- € German list price)
*D3: Nikon D3 + Nikkor 70-200 f/2.8 VR G IF-ED (7140,- € German list price)
*E3: Olympus E3 + Zuiko 50-200 f/2.8-3.5 ED SWD (3100,- € German list price)
*K20: Pentax K20D + DA* 50-135mm f/2.8 ED IF SDM (2180,- € German list price)
*A700: Sony Alpha 700 + 70-200 f/2.8 G SSM (3800,- € German list price)
(Order and prices as chosen by original print, K20 has best price in the field due to affordable DA* lens.)
Result (Test #4 -- Relative ratio of out-of-focus shots, central AF):
*A700: 2.1 %
*40D: 6.4 %
*D3: 9.2 %
*D300: 10.0 %
*1D: 11.7 %
*1Ds: 14.3 %
*E3: 17.8 %
*D80: 23.2 % (but 10.7 % with multi-field AF)
*K20: 25.6 % (and 43.6 % with multi AF)
Result (Test #3 -- Absolute number of in-focus shots, central AF):
1*1D: 30.2 images
2*D3: 21.6 images
3*40D: 20.6 images
4*A700: 15.3 images
5*1Ds: 15.0 images
6*D300: 13.5 images
7*D80: 8.6 images (10.7 with multi AF)
8*E3: 7.4 images
9*K20: 5.8 images
3.7 images (with multi-field AF, other multi-field AF results ommitted here)
Method:
Continous shots (burst, continous AF aka AF.C) of an approaching red Chrysler PT cruiser, tripod mounted and panned centering onto radiator grill. Photograph besides road. Road straight. Test done on a closed military airport.
Controlled speed: 100 km/h (62 mph).
Starting photo burst at 100m distance (109 yards, 328 ft). Stopping when passing by.
Time to drive through 100m: 3.6s.
Focal length: 35mm equivalent of 200mm (135mm for K20).
Aperture: f/2.8 or widest (Olympus).
Shutter: 1/320 or shorter.
Light: Daylight overcast with grayness. Constant conditions.
Storage: JPEGs onto Sandisk Extreme III.
Statistics: 6 series, averaged.
If I may make my personal scale:
Outstanding: 95-100% (relative ratio of in-focus shots)
Excellent: 85-95%
Good: 75-85%
Average: 25-75%
Poor: 0-25%
Then I get:
Outstanding: A700
Excellent: 40D, D3, D300, 1D, 1Ds
Good: E3, D80, K20
Nothing to complain about. Of course, this is a representative test for AF.C performance (probably the best been published to date). It is nowhere indicative for low light AF.S performance.
Amitiés...