Name: TTartisan 7.5mm f/2.0 Fisheye
Brand: TTartisan

Summary

The TTartisan 7.5mm f/2.0 Fisheye is a 8mm ultra-wide prime (12mm equivalent) with f/2 maximum aperture. The lens is priced at approximately ~$250 USD. Please check the official product page for sample images, manuals, and firmware updates.

Specifications 16/20

Optical construction	11 elements in 8 groups (2 LD, 3 HR)
Coating	MC Multi-Layer
Focal length	8mm
Max aperture	f/2
Sweet spot	—
Aperture blades	7 (circular)
Sunstar points	14 (soft — circular blades)
Max magnification	—
Min focus distance	120mm
AF motor	Manual focus
OIS	No
Weather sealed	No
Aperture ring	Yes
Clickless aperture	No
Focus ring	Yes
Focus by wire	No
Distance scale	Yes
Rotating front	No
Tripod mount	No
Weight	350g
Diameter	72mm
Length	53mm
Filter thread	—
Year	2020

MTF Charts

f/2

10 lp/mm S 10 lp/mm M 30 lp/mm S 30 lp/mm M

Position	10S	10M	30S	30M
Center	0.94	0.94	0.71	0.71
1.4mm	0.95	0.95	0.72	0.77
2.8mm	0.95	0.95	0.73	0.74
4.2mm	0.95	0.95	0.69	0.75
5.6mm	0.94	0.94	0.61	0.72
7mm	0.91	0.94	0.54	0.67
8.4mm	0.90	0.94	0.53	0.66
9.8mm	0.90	0.94	0.49	0.70
11.2mm	0.90	0.90	0.46	0.69
12.6mm	0.91	0.81	0.53	0.58
14mm	0.92	0.75	0.57	0.49

f/8

10 lp/mm S 10 lp/mm M 30 lp/mm S 30 lp/mm M

Position	10S	10M	30S	30M
Center	0.92	0.92	0.77	0.77
1.4mm	0.93	0.93	0.77	0.78
2.8mm	0.93	0.93	0.77	0.79
4.2mm	0.93	0.93	0.76	0.80
5.6mm	0.92	0.93	0.73	0.80
7mm	0.92	0.93	0.70	0.79
8.4mm	0.92	0.93	0.69	0.77
9.8mm	0.92	0.93	0.70	0.77
11.2mm	0.91	0.92	0.69	0.78
12.6mm	0.91	0.93	0.65	0.79
14mm	0.90	0.93	0.58	0.79

Source: Official manufacturer specifications

Optical Quality 0/14

Limited professional review coverage for this lens.

Alternatives

Viltrox AF 9mm f/2.8 Air Venus Laowa 9mm f/2.8 Zero-D Samyang 8mm f/2.8 ED AS IF UMC Fisheye Samyang 8mm f/3.5 Aspherical IF MC Fish-eye Fujifilm XF 8mm f/3.5 R WR Fujifilm XF 8-16mm f/2.8 R LM WR Venus Laowa 8-16mm f/3.5-5 Zoom CF

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