Reddit mentions: The best camera lens diopters

You're using a D3300 right? You should be able to get an angled finder for the viewfinder. The Nikon DR-6 is fantastic, but expensive. There are also plenty of third party options like this though: http://www.amazon.com/Seagull-Finder-Minolta-Olympus-cameras/dp/B000CS40WY

I've seen these 10x macro lenses as well. Do you know if there is any way to combine those with the Sony 90mm to increase magnification?

https://www.amazon.ca/Opteka-Achromatic-Diopter-Close-Up-Threaded/dp/B001A5IBCI/ref=sr_1_1?s=electronics&ie=UTF8&qid=1523034857&sr=1-1&keywords=10x+macro+sony&dpID=41k0e-BKGzL&preST=_SY300_QL70_&dpSrc=srch

Thank you so much for that link!! I read the article of the 4 ways to get closeup photography. Do you think device I am linking to would work well for what I am wanting to do?
https://www.amazon.com/dp/B00NBKQ820/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=3VBE9T7KWBQME&coliid=I2L1HXAN65UG1E

You may want to look at getting a reverse-ring adaptor like this. You will not need the rubberbands anymore, an it will be a bit more secure. You will need to know the filter size of both lenses, and it should be < $10. Any real camera shop will have these.

He said the super closeup of the dragonfly was at 100% crop without the macro lens handheld, he's reading this post, just doesn't have a reddit account

his stuff on amazon

Raynox 150 Macro

http://www.amazon.com/Raynox-DCR-150-Snap-On-Macro-Lens/dp/B0007KS7D0

Sony SEL55210

http://www.amazon.com/Sony-SEL55210-55-210MM-F4-5-6-3-E-Mount/dp/B006GTQ71U

Sony NEX-6

http://www.amazon.com/Sony-Compact-Interchangeable-Digital-16-50mm/dp/B0096W1OKS

The NEX 6 would send you outside your budget significantly, the 5R and the 3N has the same sensor and priced a little lower

That's a Mamiya RZ67, which has the viewfinder on top. If you want something similar on your DSLR, look for right angle adapters like this one: https://www.amazon.com/Seagull-Finder-Minolta-Olympus-cameras/dp/B000CS40WY

The 100mm macro uses a 67mm filter ring. The 50mm f/1.8 II uses a 52mm filter ring. The reversing ring needs 67mm for one side and 52mm for the other. Here's one and there are probably others.

hi def camera lens

Um... why? I've never heard of anyone doing this.

Face-to-face coupling for macro lens reversal, sure, but not front-to-back, and never two lenses where the one on the front doesn't cover the same or larger format. C-mount lenses are typically only for 16mm motion film coverage, and will vignette even on four-thirds, let alone APS-C.