Compare real-world fit, not spreadsheet noise.
Pick up to four products and tune the verdict around travel, hybrid work, wildlife, resale safety or pure value. GearAtlas weighs carry size, ecosystem cost, market timing and ownership risk in one calm decision surface.
Visual
Estimated
Ranked
Sigma BF
Full-frame / 620g
Fujifilm X100VI
APS-C / 521g
Workflow lens
Fujifilm X100VI is the stronger fit for travel and everyday carry.
Fujifilm X100VI leads on carry and size by 22 points.
Fujifilm X100VI leads on resale strength by 38 points.
Camera size studio
Relative body dimensions
Front, back and top views are drawn from external dimensions so the size relationship stays proportional.
View
Mode
Sigma BF
Front view / 132 x 92mm
132 x 92 x 72mm
Fujifilm X100VI
Front view / 128 x 75mm
128 x 75 x 55mm
Width
Height
Depth
Weight
External dimensions and carry delta
Fujifilm X100VI is the narrowest (4mm less than Sigma BF), Fujifilm X100VI is the shortest (17mm less than Sigma BF), Fujifilm X100VI is the thinnest (17mm less than Sigma BF), and Fujifilm X100VI is the lightest (99g less than Sigma BF).
Fixed-lens bodies include their lens in the envelope; interchangeable bodies still need a lens attached.
Sigma BF
Fujifilm X100VI
Class benchmarks
Sensor comparison
Sensor size to scale
×1 crop
×1.53 crop
Full-frame captures ~2.4× the sensor area of APS-C, a real low-light and depth-of-field edge.
Decision matrix
Scores tuned for travel
Highlighted specs
Only specs that change the decision
Sensor
24MP full-frame
Sensor
40.2MP APS-C X-Trans 5 HR
Storage
230GB internal
Stabilisation
5-axis, up to 6 stops
Viewfinder
Hybrid OVF/EVF
Community comparison
Owner consensus · not specsCommunity comparison appears once owners vote on these products — 6 more votes across the pair will unlock it.