Hot air balloons inflate during the blue hour at the 'Balloons over Bend' balloon festival in central Oregon. Canon EOS R3 + EF 24-70mm F2.8 L II | 24mm | ISO 25,600 | 1/100 | F2.8 Photo: Dale Baskin

It's time to prepare for another DPReview Editors' Choice photo challenge. This time, we're celebrating the 'blue hour', a period shortly before sunrise or after sunset when the sun is below the horizon but still provides enough light to make the sky appear deep blue in photos.

For this challenge, shoot and submit one or more blue hour photos. They don't need to be taken someplace exotic, but creativity is encouraged. You can enter up to three photos in this challenge.

How it works

DPReview editors will review every photo you upload to an Editors' Challenge. We'll publish our favorites in a gallery and share your work on the DPReview homepage.

If you miss participating in this one, please look out for our next Editors' Challenge.

How to submit your photos

Submissions will open on September 29, and you have until Saturday, October 5 (GMT), to submit entries. User voting will begin after that and will help inform DPReview Editors' picks, but will not select them. They are one factor in our evaluation of submissions.

Enter your photos here

Challenge details

Processing rules:

• Post-processing is allowed, but this is a photo contest, not a post-processing contest. Please, no composite, altered or fabricated images.

Capture date rules:

• Images must be shot after the announcement date of the challenge.

Additional rules:

• Photos must be at least 2400 pixels long on one edge.
• Include a title for your photo.
• Include a caption that tells us the story behind the photo, including when and where it was taken.
• Share what gear was used and your camera settings. If you used an interchangeable lens camera, please tell us what lens was used.
• Tell us about any edits you made in post-processing beyond basic things like white balance, exposure adjustments, etc.
• Please ensure your account's contact information is current; we may contact you if your photo is selected as an Editor's Pick. User voting will inform DPReview Editor's Picks, but will not select them. They are one factor in our evaluation of submissions.
• Our standard copyright and privacy terms and conditions policy applies.