Photography Guides
Master depth of field, hyperfocal distance, and aperture settings with our free in-depth guides.
What is Depth of Field? Complete Guide for Photographers
Depth of field explained from scratch: what it is, what controls it and how to use it on purpose, with aperture, focal length and distance in real numbers.
Read articleHyperfocal Distance Explained: Sharp Landscapes Every Time
Hyperfocal distance is the focus setting that keeps everything from half that distance to infinity sharp. How to calculate it and use it for landscapes.
Read articleAperture vs Distance: What Affects DOF More?
Moving closer doubles your subject size and cuts depth of field far more than opening up a stop. The real comparison of aperture and distance, with numbers.
Read article7 Depth of Field Myths Debunked
Does full frame always give shallower depth of field? Does stopping down always sharpen? Seven depth of field myths debunked, with the numbers behind each.
Read articleBackground Blur (Bokeh): How to Maximize It
Aperture is one of three levers for background blur. Distance and focal length matter just as much. See how much each contributes, with real numbers.
Read articleBest Aperture for Landscape Photography: f/8, f/11, or f/16?
f/11 is not always the answer. At f/16 diffraction already costs sharpness on most sensors. Which landscape aperture wins, with pixel-level numbers.
Read articleLens Compression: How Distance Changes Perspective
Lens compression comes from where you stand, not the lens. How distance sets perspective, plus the wide-angle edge stretching that really is down to the lens.
Read articleNight Photography: DOF at High ISO
Night photography depth of field: how thin it gets at f/1.4 to f/2.8, why high ISO does not widen it, and how to focus for stars, portraits and cityscapes.
Read articleMirrorless vs DSLR: Does It Affect Depth of Field?
Switching from DSLR to mirrorless does not change depth of field, but sensor size, faster lenses and autofocus can change what you get. What changes and why.
Read articleFocus Stacking: When Depth of Field Isn't Enough
At 1:1 macro, f/11 gives about 1.3 mm of depth of field and a beetle is 10 mm long. How many frames you need, how to shoot a stack and how to blend it.
Read articlePortrait DOF: Choosing the Right Aperture
At f/1.4 an 85mm portrait has under 7 cm of depth of field. Which aperture suits head shots, couples and groups, with real numbers at 2.5 m and 3.5 m.
Read articleShooting Wide Open: When f/1.4 Goes Wrong (and Why)
f/1.4 ruins as many shots as it makes. Seven situations where wide open fails, from recomposing to angled faces, with the numbers and what to do instead.
Read articleZone Focusing: The Street Photographer's Secret Weapon
Zone focusing lets you pre-focus to a set distance, stop down for depth and shoot without autofocus lag. How to set it up and the ranges it covers.
Read articleDOF in Video: How It Differs from Photography
Depth of field is the same in video, but the 180-degree shutter rule limits your options. ND filter stops, sensor crops and focus pulls explained with numbers.
Read articleFull Frame vs Crop Sensor: The Real DOF Differences
Full frame is shallower than APS-C only at the same framing and f-number. Crop factors, equivalent apertures and the real difference in stops.
Read articleTeleconverters and Depth of Field: What Changes and What Doesn't
A 1.4x teleconverter costs a stop and makes depth of field 1.4 times shallower. What changes at the same framing, plus the autofocus limit and magnification.
Read articleDiffraction: Why Stopping Down Too Far Makes Your Photos Softer
Stopping down past f/11 can make photos softer. Why diffraction happens, where it starts on 24 MP and 45 MP sensors, and how to find your best aperture.
Read articleThe Sunny f/16 Rule: What It Is and When It Breaks Down
The sunny 16 rule gives correct exposure in bright sun without a meter. Why it works, how to count stops, and where it fails: low sun, backlight and snow.
Read articleTilt-Shift Lenses: Controlling the Plane of Focus
Tilt lenses angle the plane of focus so subjects stay sharp where aperture alone cannot. How tilt works, the hinge rule and when it is worth using.
Read articleAstrophotography Depth of Field: Aperture, Focus and Sharpness
Astrophotography depth of field: where to focus for sharp stars and foreground, the nearest sharp distance at 14mm to 35mm, and how to confirm infinity focus.
Read articleBest Aperture for Group Photos: A Guide by Group Size
Group photo aperture depends on the group's width, not its headcount: wider groups stand further back, so depth of field grows fast. Tables for 2 to 50 people.
Read articleDepth of Field for Product Photography: The E-commerce Guide
Product photos need edge-to-edge sharpness, but depth of field at close range is only millimetres. The real numbers, why f/16 falls short and when to focus stack.
Read articleCircle of Confusion Explained: The Real Basis of Depth of Field
The circle of confusion is the standard behind every depth of field number. How it depends on print size and viewing distance, and why DOF is a judgment call.
Read articleBlurry Background on a Budget: Settings That Work Without a $2000 Lens
Get a blurrier background without a $2000 lens: move the background away, use the long end of your zoom and fill the frame. Honest numbers on a kit lens.
Read articleAperture Blades and Bokeh Shape Explained
How aperture blades shape bokeh: a straight 6-blade lens is 13% off round, an 11-blade only 4%. Plus cat's eye highlights, sunstars and what blades don't change.
Read articlePhone Portrait Mode vs Real Bokeh: What's Different
Portrait mode blurs the background in software after you shoot. Here is how that differs from lens blur, with real depth of field numbers for a phone sensor.
Read articleTry the Calculator
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