Here's the 'trick'. The person looking at the photo must what/where/when without you explaining anything.
Thus, a photo of your spouse in formal clothing probably won't automatically tell the officer that it was taken at a funeral.
I never use photos of the couple sitting at a restaurant with dirty dishes, wine glasses and/or beer bottles.
I love photos of the couple standing in front of the Eiffel tower, Seattle Space Needle, etc.
I usually print them 4 to a page ... in color.
PROFESSOR OF IMMIGRATION LAW for over 10 years -- This blog posting is offered for informational purposes only. It does not constitute an attorney-client relationship. Also, keep in mind that this is an INTERNET BLOG. You should not rely on anything you read here to make decisions which impact on your life. Meet with an attorney, via Skype, or in person, to obtain competent personal and professional guidance.
It is a matter of common sense. You must demonstrate your courtship and shared experiences. Any photos that relate to that help, any others do not help. Multiple photos of the same thing do not help.
The above is intended only as general information, and does not constitute legal advice. You must speak with an attorney to discuss your individual case.
Photos are very easy to fake. The two of you could have just had a weekend party and changed clothes and taken a bunch of photos. They don't put much stock in them, though they still like to see some. The helpful photos are ones with family members in them, and/or in front of monuments or signs to show the location of various trips together. If this were an "arrangement" for immigration purposes, people often don't tell their family, so they like to see the families know about it. They prefer joint financial evidence.
This reply is intended only as general information and does not constitute legal advice in any particular case. This reply does not create an attorney/client relationship.