By-eye wrote:
... My new LX5 has finally fixed an issue I have always had with compact digital cameras though ..
... When I press the shutter button, it focusses instantly and when I press it again it takes the picture instantly. There is no delay - so I now have a camera that can genuinely do action shots alongside landscapes and portraits.
... Forget the details of marginal improvements, one over the other - this is a big step forward for any compact camera and for me, is a keeper!
I would be interested to know how
reliable (in addition to being fast) the single-area normal-speed auto-focus on the DMC-LX5 is [where it comes to more detailed (high spatial-frequency) subject-matter to be auto-focused on].
I eventually gave up on my DMC-TZ4 (Venus IV) auto-focus (which was so limited in terms of spatial-frequency detail that I literally had to use spot-focus at all times and in all shooting situations). The required light-level for reliable auto-focusing was also rather high, as well. The DMC-TZ4 worked out well for flower macros, but fell very short in it's other respects (due to the very flaky auto-focus functionality).
I sold my TZ4 in late 2009 in order to purchase my DMC-LX3 (Venus IV). The LX3 performs better where it comes to all of the above-described TZ4 "annoyances" - but the LX3 auto-focus performance (where it comes to image-detail, as well as the light-level at which auto-focus can reliably function) still leaves something to be desired ...
I (personally) am less concerned with auto-focus
speed as I am (most) concerned with auto-focus
accuracy - and the ability to find correct focus where it comes to highly-detailed subject-matter (without having to resort to spot-focus mode to "get it right").
How is the DMC-LX5 auto-focus in these particular respects?
How low a light-level (perhaps an estimated Exposure Value referenced to ISO=100) can the DMC-LX5 reliably auto-focus at, in general?
Exposure Value = LOG [to the base 2] of ( (100) / (ISO) x (F^2) x (S) )
where
ISO is the ISO Sensitivity; and
F is the F-Number; and
S is the Shutter-Speed
or, just let me know the ISO, F-Number, and Shutter-Speed of a shot that you know to be near the low-light cut-off for reliable auto-focusing, and I can calculate the EV myself.
Thanks! ...
