| Test Conditions |
- Phase One DF Body
- Phase One P65+ digital back
- Cambo Copy Stand
- Profoto Acute Strobes
- Capture One 7.1.1
- Capture Engine: Capture One 7
|
- Both lenses used the same camera body and digital back
- Lenses were locked down to prevent drifting
- Both lenses are compared at f/11 at 1/125 sec
- LCC’s were applied to each image to even out lighting on the Cambo Copy Stand
- Default Sharpening Setting (no additional sharpening was added)
|
Phase One 75-150 LS vs. Non LS Specifications Table
|
Phase One 75-150 LS |
Phase One AF 75-150 |
| Optical Construction |
11 elements, 8 groups |
11 elements, 10 groups |
| Angle of View |
50°-26° |
50°-26° |
| Aperture Range |
(f/4-f/.56)-f/22 |
f/4.5-f/32 |
| Diaphram |
Automatic |
Automatic |
| Focusing System |
Auto/Manual |
Auto/Manual |
| Minimum Focusing System |
100cm/3.3ft |
100cm/ 3.3 ft. |
| Maximum Magnification Ratio |
0.09~0.164x |
0.09~0.16x |
| Area Covered |
636 x 472mm (at 75mm)341 x 253mm (at 150mm) |
545 x 409mm (at 75mm)293 x 220mm (at 150mm) |
| Equivalent 35mm Focal Length |
47-93mm |
47-93mm |
| Filter |
95mm |
77mm |
| Lens Hood |
Bayonet |
Bayonet |
| Dimensions |
172×105.5mm/6.8×4.2″ |
145 x 88mm / 5.7 x3.4″ |
| Weight |
1800g/3.96 lbs. /63.49 oz. |
1114g/2.5 lbs. /38.99 oz. |
Both lenses have their advantages and disadvantages. The Phase One AF 75-150mm lens is relatively small in size. Weighing in around 2.5lbs, you can easily carry it around. The newer Phase One 75-150 LS lens is rather large and weight about 4lbs.
The Phase One 75-150 LS lens has a maximum aperture of f/ 4.0 compared to the maximum aperture of f/ 4.5 on the non LS version. The LS lens will give you a third of a stop more light wide open. However, the lens is designed with a sliding aperture – meaning that when you zoom in your focal length your maximum aperture will start to decrease. When zoomed all the way in at 1500mm, the LS version has a maximum aperture of f/5.6. The non LS version has a fixed aperture so you can have f/4.5 even when zoomed in all the way.
A nice feature of the Phase One 75-150 LS lens is a locking mechanism which gives you the ability to lock down your focal length. The locking mechanism is located on the focal length ring, simply slide the ring forward to lock. This feature is helpful especially when shooting downwards since bigger lenses are more prone to drift.
For a more detailed view, click on an image to enlarge it.
Resolution Chart at 75mm
Chromatic Aberration at 75mm
Chromatic aberration seems to effect both lenses when zoomed out to 75mm, but it is more apparent on the corners in the Phase One 75-150mm LS lens.
Left: Phase One 75-150mm LS zoomed to 75mm, Right: Phase One AF 75-150mm Lens zoomed to 75mm
Corner Sharpness at 75mm
The Phase One AF 75-150mm lens has sharper corners when zoomed out to 75mm as compared to the Phase One 75-150mm LS. This changes when focal length is increased.
Top: Phase One 75-150mm LS zoomed to 75mm, Bottom: Phase One AF 75-150mm zoomed to 75mm
Center Sharpness at 75mm
Both the 75-150 LS and non LS are consistently sharp in the center of the image, and both have sharpness falloff near the corners of the frame. However, the corners of the Phase One 75-150mm LS are sharper than the Phase One AF 75-150mm with the exception of 75mm. Corner sharpness increases with increase in focal length.
Top: Phase One 75-150mm LS zoomed to 75mm, Bottom: Phase One AF 75-150mm zoomed to 75mm
Resolution Chart at 90mm
Chromatic Aberration at 90mm
Top: Phase One 75-150mm LS zoomed to 90mm, Bottom: Phase One AF 75-150mm zoomed to 90mm
Corner Sharpness at 90mm
Top: Phase One 75-150mm LS zoomed to 90mm, Bottom: Phase One AF 75-150mm zoomed to 90mm
Center Sharpness at 90mm
Top: Phase One 75-150mm LS zoomed to 90mm, Bottom: Phase One AF 75-150mm zoomed to 90mm
Resolution Chart at 105mm
Chromatic Aberration at 105mm
Top: Phase One 75-150mm LS zoomed to 105mm, Bottom: Phase One AF 75-150mm zoomed to 105mm
Corner Sharpness at 105mm
Left: Phase One 75-150mm LS zoomed to 105mm, Right: Phase One AF 75-150mm zoomed to 105mm
Center Sharpness at 105mm
Top: Phase One 75-150mm LS zoomed to 105mm, Bottom: Phase One AF 75-150mm zoomed to 105mm
Resolution Chart at 125mm
Chromatic Aberration at 125mm
Top: Phase One 75-150mm LS zoomed to 125mm, Bottom: Phase One AF 75-150mm zoomed to 125mm
Corner Sharpness at 125mm
Top: Phase One 75-150mm LS zoomed to 125mm, Bottom: Phase One AF 75-150mm zoomed to 125mm.
Center Sharpness at 125mm
Top: Phase One 75-150mm LS zoomed to 125mm, Bottom: Phase One AF 75-150mm zoomed to 125mm.
Resolution Chart at 150mmmm
Chromatic Aberration at 150mm
Top: Phase One 75-150mm LS zoomed to 150mm, Bottom: Phase One AF 75-150mm zoomed to 150mm
Corner Sharpness at 150mm
Top: Phase One75-150mm LS zoomed to 150mm, Bottom: Phase One AF 75-150mm zoomed to 150mm
Center Sharpness at 150mm
Top: Phase One 75-150mm LS zoomed to 150mm, Bottom: Phase One AF 75-150mm zoomed to 150mm
Chromatic Aberration Correction Applied