---
title: "YsEVMeter - Reviews, Revenue and Downloads in Latvia | Apple App Store"
description: "YsEVMeter turns your iPhone into a precise three-zone spot light meter for photographers who care about exposure. Point the camera at your scene and read highlight, midtone, and shadow values in real "
---

# YsEVMeter — Latvia
> Spot light meter & Zone System

![YsEVMeter App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/61/4d/21/614d216c-5e6f-f970-b143-eda24611a4c7/AppIcon-0-0-1x_U007ephone-0-1-85-220.png/434x0w.png)

**Developer:** [Midtone Lab](https://apptail.io/developer/midtone-lab-byrHlc)
**Category:** Photo Video
**Rating:** N/A (0 ratings)
**Price:** €2.99
**Bundle ID:** com.yutakas.YsEVMeter
**Store:** Apple App Store
**Country:** Latvia
**Version:** 1.0 (released 2026-06-02)
**Original Release:** 2026-06-02

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/lv/app/app/id6773098117)
**AppTail Page:** [https://apptail.io/app/ysevmeter-PqhA/latvia](https://apptail.io/app/ysevmeter-PqhA/latvia)

## YsEVMeter Description
YsEVMeter turns your iPhone into a precise three-zone spot light meter for photographers who care about exposure. Point the camera at your scene and read highlight, midtone, and shadow values in real time — then work the way film photographers always have, with the Ansel Adams Zone System built in.

METER THE SCENE
• Real-time EV metering straight from the live camera
• Three-zone spot metering: highlight (red), midtone (green), shadow (blue)
• Drag any spot to re-meter, or tap to drop your own custom spots
• ISO from 25 to 102400, in color or black & white

SEE THE LIGHT
• Zone Map overlay posterizes your scene into the 11 Ansel Adams zones (0–X)
• Heatmap overlay reveals luminance across the whole frame
• Histogram overlay with shadow, midtone, and highlight markers
• Adaptive zone detection: 2% percentile, Otsu auto-thresholding, or manual sliders

CALCULATE THE EXPOSURE
Freeze a snapshot or load a photo from your library (with its EXIF aperture, shutter, and ISO), then solve the exposure:
• Aperture f/1–f/64, shutter 1/8000s–480s, EV adjustment ±5 stops
• Full-stop or 1/3-stop increments
• Color (Wratten) and ND filter compensation
• Bellows-extension compensation for large-format work
• Reciprocity-failure correction with film-stock presets for long exposures
• Smart linking keeps aperture and shutter balanced as you adjust

DIAL IT IN
• Calibrate against a reference meter for readings you can trust
• Frame the shot — preview the exact crop for 35mm, 6×6, 4×5, or a custom format at any focal length, in portrait or landscape
• Record exposures to film rolls or quick memos, with optional GPS tagging

PRIVATE BY DESIGN
Everything runs entirely on your device. No account, no ads, no tracking — your photos and data never leave your iPhone.

Made for film shooters, large-format photographers, and anyone learning to see in zones.

## YsEVMeter Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/a9/4d/72/a94d72a4-5ea8-bd31-d8b4-f9df7dfad92a/01_metering.png/1284x2778.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/1e/ff/50/1eff5002-32fe-cffa-3fcc-5f9fa9584af1/03_calculator.png/1284x2778.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/20/88/1b/20881b98-e9b8-d484-af50-bcd41b4a91a2/05_help.png/1284x2778.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/10/7e/44/107e44db-3507-469f-f41c-248a96c87a32/04_settings.png/1284x2778.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/c9/f1/3e/c9f13e04-e9fd-a8cb-cb41-03be47af20fa/02_zone_system.png/1284x2778.png)







## YsEVMeter Available In
- [Bulgaria](https://apptail.io/app/ysevmeter-PqhA/bulgaria)
- [Brunei](https://apptail.io/app/ysevmeter-PqhA/brunei)
- [Cyprus](https://apptail.io/app/ysevmeter-PqhA/cyprus)
- [Czechia](https://apptail.io/app/ysevmeter-PqhA/czechia)
- [Germany](https://apptail.io/app/ysevmeter-PqhA/germany)
- [Ecuador](https://apptail.io/app/ysevmeter-PqhA/ecuador)
- [France](https://apptail.io/app/ysevmeter-PqhA/france)
- [Ghana](https://apptail.io/app/ysevmeter-PqhA/ghana)
- [Iceland](https://apptail.io/app/ysevmeter-PqhA/iceland)
- [Jordan](https://apptail.io/app/ysevmeter-PqhA/jordan)
- [Lithuania](https://apptail.io/app/ysevmeter-PqhA/lithuania)
- [Luxembourg](https://apptail.io/app/ysevmeter-PqhA/luxembourg)
- [Latvia](https://apptail.io/app/ysevmeter-PqhA/latvia)
- [North Macedonia](https://apptail.io/app/ysevmeter-PqhA/north-macedonia)
- [Netherlands](https://apptail.io/app/ysevmeter-PqhA/netherlands)
- [United States](https://apptail.io/app/ysevmeter-PqhA/united-states)

---

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