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Medium Format Frame Sizes

Frame Sizes Matter

Let's explore the intriguing world of medium format photography and how different frame sizes can influence your portraits. Discover the magic behind the medium format aspect ratios and see how it all relates to Thomas's unique portraiture shooting service.

At Thomas's portraiture shooting service, clients have the creative freedom to choose from three distinct medium format aspect ratios: 6x4.5, 6x6, or 6x7. Each ratio comes with its own unique characteristics that can significantly impact the look and feel of the portraits. 6x4.5 offers a balanced frame with a bit more width, while 6x6 delivers a timeless and symmetrical square composition. For those seeking expansive, cinematic shots, 6x7 provides an elongated format. It's all about helping clients find the aspect ratio that perfectly complements their vision and style.

Please note that each medium format aspect ratio - 6x4.5, 6x6, and 6x7 - will produce a different number of exposures per roll. The dimensions of the frame directly impact the number of shots available in each format. Be sure to consider this when choosing your preferred aspect ratio for your portraiture session.


As Thomas's recommended and first-choice medium format aspect ratio, 6x7 is a format worth considering for your portraiture session. With an elongated frame, it offers an expansive canvas for your images, allowing for more storytelling within a single shot. The wider aspect ratio provides a cinematic and painting-like feel, making it an ideal choice for capturing grand, sweeping portraits and dramatic scenes. If you're looking to add an extra dimension to your portraiture with a touch of artistry, 6x7 is the way to go.

Available camera: Pentax 67, Mamiya RB67 Pro-S

Exposures per roll: 10


The 6x6 medium format aspect ratio is a square frame that provides a balanced and versatile canvas for your portraits. It's the classic choice for medium format photographers and offers a timeless aesthetic. Square compositions often lend a sense of symmetry and equilibrium to your images. The 6x6 aspect ratio typically yields fewer exposures per roll compared to 6x4.5, allowing for more detail and attention to each shot. It's an excellent option for those who appreciate a balanced and classic look in their portraits.

Available camera: Yashica Mat-124G, Zenza Bronica S2A

Exposures per roll: 12


The 6x4.5 medium format aspect ratio is a slightly elongated frame, offering a unique dimension to your portrait photography. It's a great compromise between the traditional 6x6 square format and the broader 6x7 aspect ratio. The 6x4.5 aspect ratio allows for a bit more width in your shots, adding variety to your compositions. With this aspect ratio, you can create images that are both classic and distinctive. 

Available camera: Mamiya 645 1000S

Exposures per roll: 15

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