P-TTL Test Images
Bounce Flash
For the samples on this page we bounced the flash off a pop corn ceiling. All shots were made with 0 as well as +1 EV compensation and at ISO 400, 800, and 1600.
Setup:
- Pentax K-3 in P exposure mode
- Unprocessed JPGs (except for scaling)
- Autofocus with center focus point
- smc Pentax-A, -F, and -FA 50mm F1.4 lenses
- AF 360 FGZ II flash mounted on camera
- Bounced off the ceiling
Click any thumbnail to start browsing larger images.
| FA50 | F50 | A50 |
| 1 |  FA50-P=std=ceil=ctr=vf=i0400=ev0
1/90sec F2.8 ISO 400
|  F50-P=std=ceil=ctr=vf=i0400=ev0
1/90sec F2.8 ISO 400
|  A50-P=std=ceil=ctr=vf=i0400=ev0
1/125sec F2.8 ISO 400
|
| 2 |  FA50-P=std=ceil=ctr=vf=i0400=ev1
1/90sec F2.8 ISO 400 EVC 1.0
|  F50-P=std=ceil=ctr=vf=i0400=ev1
1/90sec F2.8 ISO 400 EVC 1.0
|  A50-P=std=ceil=ctr=vf=i0400=ev1
1/125sec F2.8 ISO 400 EVC 1.0
|
| 3 |  FA50-P=std=ceil=ctr=vf=i0800=ev0
1/90sec F2.8 ISO 800
|  F50-P=std=ceil=ctr=vf=i0800=ev0
1/90sec F2.8 ISO 800
|  A50-P=std=ceil=ctr=vf=i0800=ev0
1/125sec F2.8 ISO 800
|
| 4 |  FA50-P=std=ceil=ctr=vf=i0800=ev1
1/90sec F2.8 ISO 800 EVC 1.0
|  F50-P=std=ceil=ctr=vf=i0800=ev1
1/90sec F2.8 ISO 800 EVC 1.0
|  A50-P=std=ceil=ctr=vf=i0800=ev1
1/125sec F2.8 ISO 800 EVC 1.0
|
| 5 |  FA50-P=std=ceil=ctr=vf=i1600=ev0
1/90sec F4.0 ISO 1600
|  F50-P=std=ceil=ctr=vf=i1600=ev0
1/90sec F4.0 ISO 1600
|  A50-P=std=ceil=ctr=vf=i1600=ev0
1/125sec F4.0 ISO 1600
|
| 6 |  FA50-P=std=ceil=ctr=vf=i1600=ev1
1/90sec F4.0 ISO 1600 EVC 1.0
|  F50-P=std=ceil=ctr=vf=i1600=ev1
1/90sec F3.5 ISO 1600 EVC 1.0
|  A50-P=std=ceil=ctr=vf=i1600=ev1
1/125sec F4.0 ISO 1600 EVC 1.0
|
Observations:
- The F-series is a tad brighter than the FA
- Flash zoom must be set manually for all lens types when in bounce mode
- +1 EV compensation is required to avoid underexposure
