Skip to content

LWPhoto Atlasfield journal of light

Locations
National Parks
Night Sky
Nature
Cities
Gear
Tools
Guides

Home
Gear
Lenses
Petri

Petri Lenses

2 Petri lenses

Petri Auto Petri 1:2.8 f=28mm28 mm
Petri Auto Petri 55mm f/1.855 mm

Field guides

Best Focal Lengths for Landscape Photography→
Buying Used Camera Gear Checklist→
Working With What You've Got→
Full Frame vs APS-C for Landscapes→
Tripod Technique for Sharp Photos→

LWPhoto Atlas

f/8 and be there.

Nature photography locations, light & sky planning, and free tools. Free planning data for 17,570 U.S. photo locations, computed light tables and in-browser tools.

Explore

All locations
National parks
State parks
Waterfalls
Lighthouses
Scenic byways

Plan

Golden hour calculator
Milky Way planner
Moon phase calendar
Meteor showers
Northern lights
Dark sky places

Nature

Wildflower calendars
Bird photography
Butterflies
Mammals
Photography guides

Tools

Online kaleidoscope
Depth of field
Hyperfocal distance
NPF / 500 rule
ND filter
All tools

About

About this site
Editorial policy
Data sources
Contact
Disclaimer
Cookie policy
Affiliate disclosure

© 2026 LWPhoto Atlas. Text and computed data on this site are original unless credited. Photos belong to their credited authors.Data sources & licenses · Privacy · Terms · Sitemap

Search

↑ ↓ to move · Enter to open · Esc to close

Web Analytics Made Easy - Statcounter