[Kiwikat]

I got my box this morning and I'm really surprised by the build quality of the "kit" 18-140mm.  It is what I would have expected out of a high end Canon consumer lens or even one of the more modern plastic L lenses, not a lowly kit lens.  Hopefully the image quality surprises me just as much!
 
The D7100 body feels good in my (relatively large) hands, though I'll probably end up with a battery grip anyways for vertical shooting convenience.  It feels at least as nice as my 50D was, and about as nice as the 7D, though maybe slightly plastickier.  The controls are a bit foreign to me, but that's to be expected.
 
Color this Canon shooter impressed so far!  I won't actually get to try her out until this evening.

 

[jc9394]

Picked up my first Sigma lens.
 

 

[jc9394]

Got 10 minutes to play with the Sigma, I'm impressed.  It is much sharper than my 50 f/1.4D.
 

 

 

[jc9394]

Pretty bokeh but not as good as the Nikon 85...
 

 

[musubi1000]

The D800 has been one of my favorite cameras for the last 2 1/2 years. But the new 810 is just blows my mind. Detail for days. ISO 6400 with no color noise. It is so much cleaner at all ISOs. It's also quieter. The shutter sound is much softer than before. These improvements alone make an already great camera spectacular. If you can afford one buy it. This camera can deliver the goods.

 

[Frank I]

 

[PaperMacWriter]

So I shoot with an F100... it used to be my dad's, and he gave it to me with some pretty nice lenses — shooting with film (sparingly) is still more affordable than picking up a used D600. Once the price of a used full frame drops enough to a college-student budget I'll add one to my arsenal, but in the meantime I love my F100. Picked up a used 50mm 1.4D on Craigslist, loving that lens. I also have an 24-120mm 3.5-5.6 telephoto and 16mm 2.6 fisheye  Here's a photo of star trails I took in northern Arizona:

Shot on Ektar 100 for an hour. Pretty pleased with the result. Used the fisheye for this.
 
May not be as cutting edge as the D810, but it's a great learning opportunity! 

 
 
EDIT: added lens information

 

[Currawong]

I finally got around to getting the Sigma 35mm f1.4 for my D800. I wish I'd bought it sooner now. It feels almost like I bought a whole new camera.
 
I don't want to know about the D810, though I'd love no-noise ISO6400 shooting...

 

[jc9394]

  I finally got around to getting the Sigma 35mm f1.4 for my D800. I wish I'd bought it sooner now. It feels almost like I bought a whole new camera.
 
I don't want to know about the D810, though I'd love no-noise ISO6400 shooting...

 
With you on this, I'm trying very hard to live under a rock since Nikon release the D810.  I just brought the Sigma 50mm ART last week, it is crazy sharp but only meh with bokeh.  I will try to bring it with me on my trip to Osaka in couple weeks.

 

[Currawong]

 

  I finally got around to getting the Sigma 35mm f1.4 for my D800. I wish I'd bought it sooner now. It feels almost like I bought a whole new camera.
 
I don't want to know about the D810, though I'd love no-noise ISO6400 shooting...

 
With you on this, I'm trying very hard to live under a rock since Nikon release the D810.  I just brought the Sigma 50mm ART last week, it is crazy sharp but only meh with bokeh.  I will try to bring it with me on my trip to Osaka in couple weeks.

 
If you're getting a train pass, feel free to drop by Fukuoka. I should have some free time. Maybe you can experiment with that Sigma shooting me getting beaten up in Aikido class. 

 

[jc9394]

Shooting Aikido will be really fun but unfortunately I have a full schedule during my 4 days stay in Osaka.  I will plan more time next time when I visit Japan.

 

[musubi1000]

I'm still getting used to the new D810! It blows me away every time I use it. While I won't say its noise free at 6400 it is color noise free at 6400. And the detail it holds at 6400 is hard for me to believe. It has to be seen to be believable. And even then...

 

[Fuzziekiwi]

Hesitating to buy a lens for my Nikon because I have this inner feeling that I want to switch to Canon.

 

[Kiwikat]

  Hesitating to buy a lens for my Nikon because I have this inner feeling that I want to switch to Canon.

I just switched to Nikon from Canon.  You really aren't missing anything.  The image quality of my D7100 surpasses the Canon 5D Mark II I had, and that was widely regarded as the best full frame camera on the market for quite a while.
 
Unless you're an avid videographer, Canon doesn't offer anything that's better than Nikon, well maybe except for an ISO button that isn't in a completely STUPID place.

 

[bigshot]

All cameras are good nowadays. Even the iPhone has a remarkably good camera.