📷 EVCam

1. About This App

Camera EV BootCamp is a training app that helps you learn camera exposure settings intuitively. You can understand the relationship between aperture, shutter speed, and ISO through realistic camera-like controls.

Two Modes

2. Simple Mode Simple

Learn the basics of the exposure triangle (aperture, shutter speed, ISO) in Manual (M) mode only.

Screen Layout

① Nikon Z8-style Top LCD

• Mode display: M (Manual) fixed
• Shutter Speed: Current setting
• Aperture: Current setting (supports f/0.95)
• Exposure Indicator: Displayed in -5 to +5 range
• ISO: Current setting

② EV Info Panel

• Base EV: Target scene brightness (tap to change)
• Setting EV: EV achieved with current settings
• Scene Icon: Shows scene corresponding to EV
• Camera Button: Capture or import from library

Basic Usage

1. Tap Base EV to set the brightness of your target scene
2. Adjust aperture, SS, and ISO until the exposure indicator shows "0"
3. When the indicator is centered, you have proper exposure

3. Pro Mode Pro

Learn exposure control for all P/A/S/M modes with camera-like operation.

Exposure Modes

ISO Auto

When ON, ISO is automatically adjusted to achieve proper exposure with your set aperture and SS.

• Baseline ISO: The ISO set on the dial is the starting sensitivity
• Min SS: Auto (focal length based) or manual setting
• Low light: After reaching SS limit, ISO increases

AEL Button

The AEL button in the EV info panel lets you lock/unlock exposure.

• First press: Lock exposure at current EV (orange display)
• Press again: Unlock, resume following base EV (white display)

Blinking at Exposure Limits

When aperture, SS, or ISO reaches limits and target exposure cannot be achieved, related elements blink.

4. EV Basics

What is EV?

EV (Exposure Value) is a number that represents scene brightness. Higher numbers mean brighter scenes.

EV and Scene Correspondence

Technical Specification of EV Calculation

This app uses the same index-based calculation for both Simple mode and Pro mode.

This ensures:

• Consistent results for special values like F0.95 in both Simple and Pro modes
• Exposure indicator display is perfectly synchronized between both modes
• Accurate calculations according to the configured step size (1-stop/1/2-stop/1/3-stop)
• EV values imported from camera/photos are also rounded to the configured step size

5. Exposure Triangle

Proper exposure is determined by the balance of three elements: aperture, shutter speed, and ISO.

Aperture

Shutter Speed

ISO

6. ND Filter Pro

ND filters reduce the amount of light. Use them when you want slow shutter speeds in bright environments.

7. Lens Profile Pro

Includes NIKKOR Z lens database. Selecting a lens enables physical calculations for focal length, variable aperture, and teleconverters.

Supported Lenses

48 NIKKOR Z lenses are supported.

Teleconverters

8. Settings

Basic Settings

Camera Profiles

9. Tips for Improvement

Step 1: Start with Simple Mode

• Practice changing aperture by 1 stop, then SS by 1 stop to maintain exposure
• Practice achieving proper exposure at various EV values

Step 2: Advanced Practice in Pro Mode

• Control bokeh with A mode
• Express motion with S mode
• Understand exposure compensation effects

Step 3: Compare with Real Camera

• Check EV values of your photos
• Simulate the same scene in the app

Smartphone Camera Calibration

If the EV values imported from smartphone photos differ from your actual camera, you can calibrate using the "Camera Correction" setting.

Calibration Steps

1. Shoot the same scene at the same time with both smartphone and real camera
2. Calculate the correct EV from the real camera's EXIF data
3. Import the smartphone photo into the app and check the imported EV
4. Calculate the difference (e.g., Real EV12, Phone EV11 → Difference +1.0)
5. Enter the difference in Settings → "Camera Correction"