GFX Quick Test: Tamron SP VC vs Sigma DG Art

Tamron SP 35mm VC f1.8 v Sigma 35mm f1.4 Art DG HSM At maximum aperture, and a focal distance of 10m, the Sigma has distinctly sharper corners, with resolution dropping off rapidly in Zone D, but substantially more vignette. The Tamron has a more gradually tapering performance both in terms of vignette and resolution, but …

Fuji GFX Adapted Lenses

Adaptation of lenses for smaller formats, with correspondingly smaller image circles, involves advantages and trade-offs: adapted lenses are typically more varied, plentiful, smaller and cheaper – but inevitably suffer from compatibility issues, ranging from the trivial to the insuperable. The GFX 44x33mm sensor lies between the classic 35mm ‘full-frame’ and 645 medium formats. As well …

Pentax 645 as Tilt/Shift Lenses: Part 2

Light Handling & Flare There’s more to a lens than resolution, so we’ll come to that last. Light angles are actually a dominant property of the behaviour of shift lenses on both sides of the iris – especially when comparing vintage lenses with period coatings. The Olympus 35mm Shift here tested has been remounted to …

Pentax 645 35/5 v Olympus 35/2.8: Introduction

Introduction Legacy medium format lenses have seen a recent uptick in valuation and demand, thanks largely to Fuji’s GFX system.The Pentax 645Z fraternity continues to watch with detached interest the pointless hurly-burly of the camera business while patiently going about its work much in the manner of twenty years hence – and Phase One and …