Is a Nikon cool pix L840 a DSLR?

Just trying to figure this whole camera thing out.

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Canon, Nikon, or Sony?

So I've been shooting with an original Canon 5D for the past year now and am looking at upgrading. Currently only have a 50mm 1.8 and an 85mm 1.8 and one flash unit.
Basically I'm looking at some other systems as well as Canon for an upgrade and it's come down to either the Canon 6D, 7D MKII, Sony A7, or the Nikon D610.

I mainly shoot portraits, weddings, and architecture based street photography, so detail tends to trump outright performance. At this point I'm not too heavily invested in Canon so a switch (if worth it) would be doable.

Thanks!

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Flash compensation not working?

I m using a Nikon D100 and the pop up flash (yes I m aware I should get a separate flash for the hot shoe) and my camera is on manual. When I change the flash from +1.0 to --3.0 using the flash compensation button (indicated by the lightning sign and +/- ) there is no difference in the lighting of the photo or the strength of the flash. Any suggestions?

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