What is the use of a second camera?

I have a Nikon D3300.

I'm an enthusiast not a Professional photographer.

What is the use of having a second camera?

What are the factors decide which camera to use. (possibly the second camera being a smaller camera like Fujifilm X20 or Fujifilm X-M1) Please recommend any other cameras that can be used as the second one ($500 max)

I'm getting a Nikon d7100?

What lenses do you recommend so I can use them for every picture?

Why is accessing photos on my camera not working?

I have a Nikon L120. Every time I try to upload pictures, it takes about 15 minutes per picture to upload. I don't have the patience (and the camera doesn't have the battery) to upload all 100+ pictures in this manner so I cancelled the upload, trying instead to find the image files manually through Windows Explorer, but the camera still takes like 10 minutes to load the folder with the images in it. What on earth is going on and what can I do to fix this problem?

Is the nikon em a good camera?

Can you adjust the F stop?

I need to buy a point and shoot camera that can record 1080p videos at 24fps?

Preferably Canon Nikon or Sony. It should also have descent zoom

Wich one will you buy? CAMERA?

The nikon 7100 or the nikon 5300?

Nikon, Nike for short?

I'm getting a dog in a few week and if it's a male I'm think snout naming him Nikon and calling him Nike for short. Any idea/comment/thoughts/suggestions?

What Fujifilm camera is best for my use?

I currently have a Canon EOS 1100d.
I'm not a professional photographer but i enjoy taking photos
It's really good and I like all of its features. The price was good and I can make use of all the features.

BUT i'm thinking of moving into Fujifilm X series.
Is it a good choice?
can you point out some cams as a suggestion please?
please do not suggest the most expensive one

Kodak, Canon, or Nikon?

I need a camera for theatre and for filming something for a film festival… Which is the cheapest? Which has the best quality… And Which one can easily have the photos and videos accessed on to the web?

Is Nikon D600 is a full frame camera?

Is Nikon D600 is a full frame camera?