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SIRUI vs TTArtisan 7.

Updated July 2026 — SIRUI wins on autofocus and optical quality, TTArtisan 7. wins on price and versatility.

Winner

The SIRUI 20mm T1.8 is a premium lens for professionals, while the TTArtisan 7.5mm F2.0 offers a budget-friendly option for creative photography. Choose based on your needs.

Why SIRUI is better

Price

SIRUI offers advanced features justifying its higher price.

Autofocus

SIRUI has advanced autofocus capabilities.

Optical Quality

SIRUI excels in low-light performance and depth of field.

Why TTArtisan 7. is better

Price

TTArtisan is significantly cheaper.

Creative Effect

TTArtisan provides unique fisheye perspectives.

Weight

TTArtisan is lightweight and easy to handle.

Overall score

SIRUI
85
TTArtisan 7.
70

Specifications

SpecSIRUITTArtisan 7.
ApertureT1.8F2.0
Focal Length20mm7.5mm
Field of View2.35:1180°
Focus TypeAutofocusManual
CompatibilityE-mountE-mount

Dimension comparison

SIRUITTArtisan 7.

Overview of the SIRUI 20mm T1.8 and TTArtisan 7.5mm F2.0

The SIRUI 20mm T1.8 is priced at $599.00, while the TTArtisan 7.5mm F2.0 comes in at a significantly lower price of $139.00, making it about 77% cheaper than the SIRUI lens. This stark price difference highlights the varying target markets of these two lenses—one catering to professional cinematographers and the other to enthusiasts looking for creative photography options. Both lenses are compatible with Sony E-mount cameras, but their features and intended uses set them apart.

Design and Build Quality

The SIRUI 20mm T1.8 boasts a compact and lightweight design, weighing only 480 grams (1.06 lbs). This design is optimal for handheld shooting and gimbal use, making it appealing for filmmakers who prioritize portability without sacrificing visual quality. In contrast, the TTArtisan 7.5mm F2.0 is designed with a unique fisheye perspective, delivering a 180° diagonal view. While it does not specify weight in the data, its design leans towards creative distortion rather than the professional-grade build of the SIRUI lens.

Optical Performance

In terms of optical capabilities, the SIRUI 20mm T1.8 features a T1.8 ultra-fast aperture, allowing for outstanding low-light performance and excellent depth of field control. It also delivers a 1.33x squeeze factor for cinematic visuals, ideal for filmmakers seeking a unique look. On the other hand, the TTArtisan 7.5mm F2.0 offers an f/2.0 aperture that is beneficial for astrophotography and low-light conditions, but its fisheye effect may not suit all types of shooting. Both lenses excel in their niches, but the SIRUI lens is better suited for a broader range of cinematic applications.

Creative Versatility

The TTArtisan 7.5mm F2.0 is designed for creative distortion, making it perfect for unique perspectives and exaggerated visual impacts in photography. Its ability to create a "miniature planet" effect enhances its versatility for artistic shots. In contrast, the SIRUI 20mm T1.8 is tailored for cinematic and professional video work, offering a more standard wide-angle view that excels in capturing landscapes and indoor spaces. While both lenses provide creative options, they cater to different styles—one focused on artistic distortion and the other on high-quality image capture.

Autofocus and Usability

The SIRUI 20mm T1.8 features a precision STM stepping motor that allows for smooth, accurate, and quiet autofocus, making it ideal for video creators who require reliable focusing capabilities. It includes eye-tracking, an AF/MF switch, and autofocus lock, providing extensive control for cinematographers. Conversely, the TTArtisan 7.5mm F2.0 is a manual focus lens, which may appeal to photographers who prefer a hands-on approach but could be a limitation for those used to autofocus systems. The usability of the SIRUI lens is more advanced, catering to professional demands.

Compatibility and Target Audience

The SIRUI 20mm T1.8 is compatible with a range of Sony E-mount cameras, including models like the A6500 and FX3, specifically targeting video professionals and filmmakers. The TTArtisan 7.5mm F2.0 also boasts extensive compatibility with various Sony APS-C models, making it a great choice for enthusiasts who enjoy experimenting with photography. While both lenses are compatible with E-mount systems, their target audiences differ significantly; SIRUI aims for filmmakers, while TTArtisan appeals to creative photographers.

Price Comparison

At $599.00, the SIRUI 20mm T1.8 is a premium lens that reflects its advanced features and professional quality. In contrast, the TTArtisan 7.5mm F2.0 is priced at $139.00, making it a budget-friendly option for those looking to explore fisheye photography without breaking the bank. This price difference of about $460 indicates that users must consider their budget and intended use when choosing between the two. For casual photographers or those new to lens experimentation, the TTArtisan offers an enticing entry point.

Which should you buy?

Choosing between the SIRUI 20mm T1.8 and the TTArtisan 7.5mm F2.0 ultimately depends on your specific needs and budget. If you are a professional cinematographer seeking a high-quality lens that excels in low-light conditions and offers advanced autofocus features, the SIRUI 20mm T1.8 is worth the investment. However, if you are an enthusiast looking to experiment with creative photography and enjoy unique perspectives without a hefty price tag, the TTArtisan 7.5mm F2.0 presents an excellent option. Each lens has its strengths and is tailored to different audiences, making the choice a reflection of your shooting style and requirements.