Looking for ideas outside the box for Bigma replacement
For a while now I have been looking into various lens system (zoom/prime/teleconverter) combinations to replace my Bigma (Sigma 50-500mm) with lens set with higher quality images (resolution, bokeh, contrast, CA). I am looking for a system with a focal range of about 100mm to 500mm, that also auto focuses well.
Here is what I have considered so far:
- Pentax 60-250mm + teleconverter - then autofocus doesn't work well and image quality is probably not exceeding Bigma
- Pentax 60-250mm + 300mm - doesn't have the long range
- Pentax 60-250mm + Pentax 560mm - large gap between 250mm and 560mm, price is very high and is too heavy and to large
- Pentax 60-250mm + Sigma 500mm - price is very high and too heavy and too large
- 60-250mm + Sigma 300mm + Sigma 2x teleconverter - price is still a bit high and still a bit heavy and large, not sure how well autofocus will work with TC and image quality is possibly better than Bigma
- Sigma 105mm macro (which I have) + Pentax 300mm + Sigma 500mm - price is very high and too heavy and too large and macro lens is slow to focus
I am starting to give up and stick with the Bigma, unless someone has some great ideas. Or if I am lucky, some day Pentax will put out a 100-500mm zoom, but I doubt it.
Any help is highly appreciated.
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