While nowhere on the barrel of your 50mm f/1.4 lens will you find the word "macro", if your lens has an aperture ring, you can quickly and easily turn your "normal" lens into an extremely powerful close-up tool.
To magnify your subject to a 1:1, 2:1 or even 3:1 ratio, all you need is a lens reversing ring such as the Nikon BR-2A. You twist the ring onto the front-barrel filter threads of your 50mm lens, and then bayonet the lens backwards into your DSLR camera's lensmount. You won't be able to focus at infinity - but bring on the bugs and buds.
If none of the 50mm lenses made for your DSLR camera have an aperture ring, macro fans still has options. Find a reversing ring for your lensmount. With the right ring, you can reverse-mount any maker's 50mm f/1.4 on your DSLR camera body and fire away in your camera's manual mode. Search garage sales and onine auctions for inexpensive 50mm lenses (with aperture rings). Or, failing that, grab a new Pentax 50mm f/1.4. Even new, it is much less expensive than virtually any 1:1 macro lens around.
If you decide to try this low-cost and effective route to high-magnification close-ups, budget, too, for a macro focusting rail. Without one, you will very quickly tire of the tedium and inaccuracy of conventional manual focus at such tight subject distances.