Zeiss Sonnar T* E 55 mm f1,8 ZA vs Irix 45mm T1.5 Sony E
Zeiss Sonnar T* E 55 mm f1,8 ZA vs Irix 45mm T1.5 Sony E
When comparing Irix 45mm T1.5 Sony E and Zeiss Sonnar T* E 55 mm f1,8 ZA, which one is better?
1. Lens Weight Comparison
Regarding the weight of the lenses, Zeiss Sonnar T* E 55 mm f1,8 ZA is the winner with a weight of 281 g compared to the 1100 g that Irix 45mm T1.5 - Sony E weighs.
Winner: Zeiss Sonnar T* E 55 mm f1,8 ZA
Regarding weight: The weight of a lens is something you need to consider, since you have to carry it around on the camera as long as you're shooting. It adds to the total weight of your camera and it's important to keep the weight low if you get tired in your arms when taking photographs or filming.
2. Lens Mount Comparison
These two lenses use the same lens mount, the Sony E. This means that both lenses are compatible with cameras that use this mount.
Winner: Tied
Regarding lens mount: Popular lens mounts are Canon RF and EF, Micro Four Thirds and Nikon Z. Different lens mounts lets you connect different lenses to camera bodies, but some might not be compatible. This can be helped by using an adapter, like a Canon EF to RF adapter.
3. Largest Aperture Comparison
The Irix 45mm T1.5 - Sony E has the largest aperture of the two lenses at 1.5 compared to the 1.8 aperture of Zeiss Sonnar T* E 55 mm f1,8 ZA. This means that you get more light to your sensor using Irix 45mm T1.5 - Sony E wide open, and therefore it might be a better lens in dark situations.
Winner: Irix 45mm T1.5 Sony E
Regarding largest aperture: A lower aperture number means that the widest aperture on the lens is larger. This means that more light will hit the sensor and also that the depth of field will be shallower, better separating your subject from the background.
4. Anamorphic Comparison
Neither Irix 45mm T1.5 - Sony E or Zeiss Sonnar T* E 55 mm f1,8 ZA are anamorphic lenses.
Winner: Tied — Neither have this feature
Regarding anamorphic: Anamorphic lenses are usually used on cinema cameras and squeezes the image when its recorded, which gives the final, stretched out, image oval bokeh and a different angle of view. The most common lenses, however, are not anamorphic but spherical, which gives a spherical bokeh and is a much cheaper lens design.
5. Aperture Blade Comparison
Both Zeiss Sonnar T* E 55 mm f1,8 ZA and Irix 45mm T1.5 - Sony E have 9 aperture blades, which means they should both have a similar bokeh shape and roundness.
Winner: Tied
Regarding aperture blades: The number of aperture blades makes a difference because the bokeh is smoother the more aperture blades the lens has. Of course, this does not mean the lens is better in other regards, but it can be an interesting aspect when deciding of a lens.
Specifications
Full specifications table of Zeiss Sonnar T* E 55 mm f1,8 ZA and Irix 45mm T1.5 Sony E:
| Zeiss Sonnar T* E 55 mm f1,8 ZA | Irix 45mm T1.5 - Sony E | |
 |  | |
| Brand | Zeiss | Irix |
| Weight | 281 g | 1100 g |
| Lens Mount | Sony E | Sony E |
| Focal Length | 55 mm | 45 mm |
| Largest Aperture | 1.8 | 1.5 |
| Anamorphic | No | No |
| Minimum Focus Distance | 50 cm | Missing |
| Type | Prime | Missing |
| Aperture Range | Missing | 1.5 - 22 |
| Filter Thread Diameter | Missing | 86 |
| Lens Front Diameter (Not Filter Thread) | 49 mm | 95 mm |
| Aperture Blades | 9 | 9 |
| Lens Groups | Missing | 9 |
| Lens Elements | Missing | 11 |
| Image Stabilization | Missing | No |
| Autofocus | Missing | Hayır |
| Macro | Missing | No |
| Weather Seal | Missing | Yes |
| Full Frame Coverage | Missing | Yes |
| Lens Hood Included | Missing | No |