I use a green screen when I shoot indoor portraits. It easily allows me to change out the background to anything the person may want. They can be outside in a garden or have some grunge background and then the background can be easily manipulated in any way without having to work about cutting the person out of the image.
Even if they just wanted some matte background, I'd have to have many different background styles & colors and have to change the background each time. The green screen allows a very quick and easy manipulation of the photo. This BTW is only for my enjoyment. I am not a pro. As a pro I might consider having more background styles on hand. Editing does add some manipulation time which as a pro, you don't want to spend time doing things like that but as an enthusiast, I enjoy it.

I have used the Date method of organizing my pictures since I started keeping my photos digitally... around 2002.
It is now too late. I would not even try to change that method. I have been using Lightroom for a few years and never used any key-wording. I have recently started a project of doing a cleanup of my full Lightroom catalog. I started at the beginning checking that I only have the photos I need in the catalog and then adding the keywords. I am almost finished up to 2013. Since each year I take more and more photos, I am just getting to the heavy lifting.
That will allow me as other have said to see all my photos with specific keywords.
An example, I might want to see all pictures that have fall colors with trees and a car. I can search by looking for the keywords, Fall Colors, Trees, Car and only the photos that match those keywords will show up. Really neat when you have them properly cataloged.
I am also doing it as I add new photos right away so I will never have to go through this again.
I also put cities or special places as keywords so that if I want to see pictures I took at The Butterfly Conservatory, I can just look for that keyword and not have to worry about what year I took it and then have to look through all the folders to find the one titles 2013-14-18 The Butterfly Conservatory.

Definite SCAM. I have people phoning me from N.Y. when my ad is local Waterloo ON asking for me to sent it somewhere.... Never.

There is never a guarantee but as long as you are shipping ONLY to the verified Paypal address you should be ok.
I've bought and sold a lot over the years using Paypal without problems.

You have to remember that formatting a card is just a write operation just like saving a photo except it writes to the FAT (File Allocation Table) & Directory. It is still just 0's and 1's so you can format as needed without worry.
Here is a link to a site that has some interesting info as well as some good comments.

It is better to format the card in the camera and not on the the computer (that will guarantee its compatibility).
'They' also say that you should format the card rather than just erasing the files. I personally have been deleting the files on the card in my computer for years without a problem with the card. I guess it would be considered 'best practice' to format rather than delete. If you do delete then make sure you eject the card reader before you pull the card. You do want to make sure the reader has finished writing its buffer to the card so you don't cause any corruption. This is true for any external device; Memory card , USB drive or external HD.

It really depends on what you will get more use from.
I have a Sigma 150mm f2/8 Macro (the older one without IS) and I have the Nikon 200-500mm f5.6.
I don't remember the last time I put the Macro on my camera to take pictures except to try it out when I got each camera new to see how it works on that body. I take macro's but not 1:1 and I use the other lenses in my arsenal. The 200-500mm could do it or my 70-200 f4. You can even get close with a wider lens like my 16-80mm f2.8-4 on my D500. They may not be true macros but works very well for the photos I do take. The only time I will probably use my Macro is if I go out shooting just to take macros which is for me, very rare.
I like having it in my arsenal for when I will want it but it is my 2nd least used lens. First is my TC20e-III teleconverter. Think I am going to sell that. It just never gets used.For you, you just have to look at what you enjoy shooting? Which will you get more use out of? I love shooting airshows and wildlife; birds, animals, zoos, things of distance which is also why I prefer a dx crop camera. I do love my D810 but it is not getting used as much except that now, I can put my 200-500mm on the D500 and the 24-70 f2.8 on the D810 and have 2 camera choices ready for shots as I walk around an airshow for example. The wider for static shots or when the planes are flying very close to you or on the runway in front of you and the 200-500mm for all the 'in the air' shots.
Even shooting butterflies in a conservatory, I have used different lenses and they all work.
As a macro 200mm allows you some distance away but for other things you it is too long a focal length for portraits. Most photogs use ~85mm. It would have an equivalent of a 300mm view on a crop sensor which is too much compression for a nice facial look. IMO you should just decide which YOU will get the most use out of and that should be your next lens.

Contemporary. I would have bought the sport but besides price, would have been too heavy to hand hold whereas my C has only been on a tripod a couple of times. Always hand held it.

I have for sale my Sigma 150-600mm F5-6.3 DG OS HSM C for Nikon.
I have everything that came with it, boxes, caps etc. I also have a lens coat/cover that is double sided; one side black and the other camouflage, I showed the camo in the 4th pic, the other have the black.

I am also selling it with the Sigma Dock. The dock allows you to change how different aspects of the lens perform as well as download and install firmware updates.

Value $1147 USD (current B&H prices) + taxes new or $1500 CAD. Asking (Reduced to) $750 USD or $1000CAD.
I will ship to Canada and USA. Anywhere else you must contact me first.

You can see from the photos that the glass is excellent as is the body. The only thing is there are some small scratches near the base of the lens, on the hood and a couple of nics on the tripod foot.
The scratches on the hood are just from use, sometimes leaning that end of the lens for stability. I mostly used the lens without the tripod foot on it (saves weight when hand holding) but the case I used to carry the lens and loose foot, caused the foot to scratch the lens near where the lens connects to the camera. The nics on the foot were because I one time dropped the foot, came flying out of the case since it wasn't on the lens at the time, hitting the ground.
These are all minor marks just showing use. I tried to get the photo to show it well and I showed the worst as the marks are not everywhere.

This is an excellent lens and sharp. It works well..

PM me if you are interested. I have sold equipment over the years on many forums including Fred Miranda and Ebay with 100% rating.

Lens with black cover


Front Glass


Rear Glass


Scratches near base & camo cover


Scratches on hood


Nicks on tripod collar


Dock is like new

I like the third one...

Beautiful Photo

Congratulations!
'Professional Looking Photos; is more the photographer than the camera but I think we will get what you mean.
There are a lot of great cameras. If you are looking for a pocket camera to always have with you and want to keep it - in your pocket, I can suggest something like one of the Sony RX100 series cameras. There are a few models available which all have similar quality but add new features as you go to the more current model (they put out a new one every year) and of course, price keeps increasing.
For a great camera that you can use for anything, especially good when travelling and size does not matter, I'd look at the Panasonic LX1000. It is what they call a 'Bridge' camera. It is similar to a DSLR but does not have interchangeable lenses and goes from wide to a great zoom.
THe most important thing about both cameras is that it has a 1" sensor. The larger the sensor, the more light it can capture, The better the photo especially under lower light. Any camera, even an older phone can capture a nice photo in great light. It is when the light or conditions become more difficult that the better cameras will shine.
Good luck on whatever you choose.

I left Canon crop cameras and went to Nikon with the D800 for the exact same reason as what you are asking about.
I love the crop sensor's seemingly better reach but wanted a FF camera for the better quality especially in high ISO. I also did not want to have 2 bodies and the D800 was the first DSLR that had a high enough resolution to give me what I wanted.
I got the camera and used it a couple of times in DX mode. Then I shot in FF and cropped in Photoshop. Exact same thing so I no longer used the DX mode except for when I want the little extra FPS rate that DX gives you (trying to get shots of a pitcher throwing the ball as an example).
It ends up though that I bought a D500 and now have 2 bodies. I'll go on a shoot (depending on where and what I am shooting) with a wider lens on the D810 and a higher telephoto zoom on the D500.
I just purchased the Nikon 200-500mm and am going to sell my Sigma 150-600mm C. All these lenses are great for the money and reach.

On the glass will give you more contrast due to reflections. I do it all the time.

As the others have said, it is because your version of Lightroom is too old. Adobe does that with all their software. They stop supporting older equipment so that you need to buy their newer software. In the case of Adobe though, they are constantly improving their software and adding new features. It is worth taking a look at Lightroom 6 or as I have done, for $10USD per month, you can get a subscription to Adobe Photoshop and Lightroom CC.

The lens does not 'adjust' to the DX body. All Nikon and Canon (and maybe some other make) cameras that I am aware of that are APS-C (Crop Sensor or DX) can take full frame lenses. Not the other way around although as mentioned, you can put a DX lens on some bodies like the D810 which just crops it's view to match the lens. I have both a full frame (D810( and a DX crop (D500) and use my FX lenses on both cameras. I have never put my DX lens on the D810... no need as I have the equivalent view in my FX lenses.