I find 200mm getting me closer to nature and I feel great carrying the Soligor around in nature walk. The K mount should be better fit as there is certain wobbling on the m42 mount. But the M42 does have the Av mode advantage not requiring the stop-down metering -- critical for reaction time needed in grabbing a shot.
I am not a bird shooter, I have problems in hearing the birds but not finding them easily. I managed to get few sparrows that are quite far away, I end up cropping the shots quite a bit
Impressions & Notes
- Some wobbling with the M42 mount due to weight of lens, K mount won't have that problem.
- But the m42 allows Av without stop-down metering
- Sharpness is reasonable in close distance as in 10 to 20 feet.
- I have test shots in farther distance and contrast and resolution is not as good. Pictures are quite soft
- f/4.0 has a nice balance in bokeh and sharpness
- I go between f/4.0 and f/5.6 mostly for birds on tree
- Birds are difficult to nail focus due to their small size, I have quite a number of misses from my test, I should try spot focus
- 200mm seems way too short to get to birds, a lot of cropping as a result