To upgrade or not to upgrade

I have an nx30 and an nx 2000.  I get great photos and eh photos.   
I keep looking at new cameras but I just cannot justify the expense.   
I notice that my photos are much better at higher shutter speeds.  
Is it just me?
Here's some samples.

The question one needs to ask is what shutter speeds are deemed to be necessary to get a good image, with what lens, and does the lens have image stabilisation? Just trying to ascertain whether your problem is camera shake, emphasised by slow speeds and a long lens, or if there's something else happening.

As you're probably well aware, "upgrading" from a Samsung system will either involve buying some second-hand Samsung equipment, be that body, lens or both, or a complete re-investment in another system. Again, without knowing what you consider the limitations of your existing equipment to be, it's not possible to make a suggestion. I see nothing "wrong" with the sample images, but at these resolutions it's not really practical to make much of a judgement.

kypfer wrote:

The question one needs to ask is what shutter speeds are deemed to be necessary to get a good image, with what lens, and does the lens have image stabilisation? Just trying to ascertain whether your problem is camera shake, emphasised by slow speeds and a long lens, or if there's something else happening.

As you're probably well aware, "upgrading" from a Samsung system will either involve buying some second-hand Samsung equipment, be that body, lens or both, or a complete re-investment in another system. Again, without knowing what you consider the limitations of your existing equipment to be, it's not possible to make a suggestion. I see nothing "wrong" with the sample images, but at these resolutions it's not really practical to make much of a judgement.

I think you correct.   It's lens and shutter speed related.

The brighter the scene the better the pic.