is it possible to find a monitor that would be good for both you think? staying under 500$?
You can get some excellent monitors for around $500, including QHD 2560x1440 monitors, which provide a much clearer image for both gaming and photo work. But getting a combination of ultra-high refresh rates (which provides smooth motion for gaming) and a high-quality IPS-type panel (which provides optimal color reproduction for photo work) still isn't quite possible.
Here are a few ideas for you though:
(1) If your priority is photo work, get the excellent Asus PB278Q 27" 2560x1440 monitor
. It's an awesome value at around $430, and its high-quality IPS panel provides great color for photo work. It will also look great for gaming, although it uses a standard 60Hz refresh rate.
(2) If your priority is gaming, get the new Acer XG270HU 27" 2560x1440 monitor
, which provides a 144Hz refresh rate using a best-in-class TN panel. It's a steal at $504 right now. It will be good for photo work, and excellent for gaming. Note that it also has AMD Freesync, which unfortunately only works with R9 290/390 series cards, not your 280x.
(3) If you want the best of everything, i.e. a 144Hz IPS panel display, you'll need to push your budget up to $600 and go for the brand-new Asus MG279Q
. It's backordered at Amazon, but it's in stock at Newegg
. This is really a dream monitor, using an IPS panel running at 144Hz to combine the best features of both of the models above.
By the way, Amazon has the better prices on all these monitors once shipping is factored in, but Newegg was the first retailer to get the new Asus MG279Q, so if that's the one you want, go to Newegg for it.