[null and void]

Nope. A picture of your spouse bears some resemblance to a picture of your sister-in-law.

Do you need to see her in person to recognize which is a picture of which?

[Non-Sequitur]

Nope. A picture of your spouse bears some resemblance to a picture of your sister-in-law.

No sister-in-law so you'll have to come up with another lame analogy.