TTARTISAN AF 40mm F2 Camera Lens Full Frame Auto Focus Light Weight Walk-around vs Sony E PZ 16-50mm F3.5-5.6 OSS Electric Power Zoom Lens - SELP1650.AE

Price Comparison: TTARTISAN AF 40mm F2 vs Sony E PZ 16-50mm F3.5-5.6 OSS

The TTARTISAN AF 40mm F2 is £6.00 cheaper than the Sony E PZ 16-50mm F3.5-5.6 OSS, representing a saving of about 3.6%. At £159.00, the TTARTISAN lens offers a more budget-friendly entry point into full-frame autofocus photography, while the Sony remains priced at £165.00. This modest price difference reflects the distinct positioning of each lens: one as a compact prime for stills and walk-around use, the other as a versatile zoom with advanced video features. Despite the minimal cost gap, the TTARTISAN’s lower price comes with no compromise on core optical performance, particularly in its large F2 aperture and lightweight build.

Optical Design and Focal Length: Fixed Prime vs Zoom Range

The TTARTISAN AF 40mm F2 is a fixed focal length prime lens, offering a golden 40mm perspective that closely matches human eye vision—ideal for street, travel, and portrait photography. In contrast, the Sony E PZ 16-50mm F3.5-5.6 OSS provides a variable zoom range equivalent to 24–75mm in 35mm format, covering wide-angle to medium telephoto. This flexibility allows the Sony to adapt to diverse shooting scenarios without changing lenses, though it sacrifices the optical simplicity and maximum aperture of a prime. The TTARTISAN’s fixed focal length enables superior image quality in a compact design, while the Sony prioritises versatility over fixed-aperture performance.

Aperture and Low-Light Performance: F2 vs Variable F3.5–5.6

The TTARTISAN AF 40mm F2 features a constant F2 aperture, delivering significantly better low-light performance and shallower depth of field compared to the Sony’s variable F3.5–5.6 range. This means the TTARTISAN can achieve softer bokeh and clearer images in dim conditions, making it ideal for intimate portraits or candid shots where background separation matters. The Sony lens, while capable in daylight, struggles in low light due to its narrower maximum aperture, especially at the telephoto end. The TTARTISAN’s F2 aperture gives it a clear edge in both creative control and functional usability under challenging lighting.

Build Quality and Portability: Lightweight Aluminium vs Retractable Compact

Both lenses are designed for portability, but they achieve it differently. The TTARTISAN AF 40mm F2 uses an aviation aluminium body weighing just 167–176g, making it exceptionally light and well-suited for long walks or travel. The Sony E PZ 16-50mm F3.5-5.6 OSS weighs only about 116g and incorporates a retractable mechanism that reduces its length by approximately 50% compared to standard lenses like the SEL1855. While the Sony is slightly lighter, the TTARTISAN’s robust aluminium construction may offer better durability despite its higher weight. Both are highly portable, but the Sony’s mechanical retraction adds unique convenience for compact storage and on-the-go use.

Autofocus and Focus Performance: STM+Lead Screw vs Motorised Zoom

The TTARTISAN AF 40mm F2 utilises a STM+lead screw stepping motor system, providing fast, quiet, and smooth autofocus with support for eye and face recognition—ideal for dynamic shooting environments. The Sony E PZ 16-50mm F3.5-5.6 OSS features a motorised zoom system that enables high-speed, noise-free zooming with constant velocity, crucial for cinematic video work. While both lenses deliver responsive focusing, the TTARTISAN excels in stills with intelligent tracking, whereas the Sony shines in video with its smooth power zoom and in-lens optical image stabilization. The choice hinges on whether priority lies in sharp stills or fluid motion capture.

Image Stabilisation and Video Capabilities: Built-in OSS vs No Mentioned Stabilisation

The Sony E PZ 16-50mm F3.5-5.6 OSS includes built-in optical image stabilisation (OSS), which helps reduce camera shake during handheld shooting and video recording—particularly beneficial at longer focal lengths. This feature is explicitly highlighted in its product description and enhances stability across the zoom range. In contrast, the TTARTISAN AF 40mm F2 does not mention any image stabilisation technology. For videographers or those frequently shooting in low light, the Sony’s OSS is a significant advantage. However, the TTARTISAN compensates with its superior optics and larger aperture, allowing for better exposure without relying on stabilization.

Which should you buy?

If your priority is a lightweight, high-quality prime lens for stills with excellent low-light performance and beautiful bokeh, the TTARTISAN AF 40mm F2 is the better choice—offering a sharper, more versatile optical experience at £159.00. It outperforms the Sony in aperture, image clarity, and focus precision, especially for portraits and everyday photography. However, if you need a compact, versatile zoom lens for video production with smooth power zoom and built-in image stabilisation, the Sony E PZ 16-50mm F3.5-5.6 OSS justifies its £165.00 price with professional-grade video features. Ultimately, choose the TTARTISAN for stills excellence and the Sony for video flexibility—both are strong contenders, but their strengths lie in fundamentally different use cases.