I am amazed at what is achievable using Pentax lenses
Here is a sampling of what I obtained with the K 3 + SMC Pentax-DA L 55-300mm F4-5.8 ED + HD Pentax-DA 1.4x AW AF Rear Converter
hand held, natural light.
I realize that the big guy - the D FA 150 - 450 lens would give better results but some times you deal with what you have, not what might be in the home, car or back pack
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note the wing detail and even the damage to the wings
I can't help but to see the "eyes" of the insect as the middle dark areas seen below, although I know they have compound eyes
all extremely cropped and pp done
imagine what a good photographer would have gotten