Optics on all Pentax 50mm lenses are pretty much constant in each lens
line. The 1.7 hasn't really changed since 1977 when the original M
version was released. The f1.4 goes back even further, sometime in the
1960's when it was first released in M42 mount as a Super Takumar.
There have been minor improvements but really the M version is mostly as
good optically as the FA version and every one in between. The A is the
most common with full aperture automation. I just like the F version
myself, because it looks a bit odd.
On 2/7/2012 6:11 PM, Walt Gilbert wrote:
I've stumbled across the A* 50 in past searches and noticed that it
being less expensive than I would have expected. I always figured it
must be due to poor optics. I guess it must be that there are so many
of them around?
-- Walt
On 2/7/2012 5:02 PM, P. J. Alling wrote:
Both of those are autofocus. The A* 50mm is a real bargain if you're
a dyi focuser.
On 2/7/2012 5:59 PM, Walt Gilbert wrote:
I'm inclined to agree with you there, P.J.
I love my manual primes, but I'm still not good enough with them to
focus quickly and get consistent results. I would like to have an
auto-focus prime in my kit for shooting candid portraits and events.
-- Walt
On 2/7/2012 4:52 PM, P. J. Alling wrote:
I'm thinking it'll be more cost effective to look for a nice 50mm
f1.7 in F or FA livery.
On 2/7/2012 5:41 PM, Walt Gilbert wrote:
Hmm. The 50/1.8 sounds like something to start saving pennies for.
Just wonder how many pennies it's going to take.
-- Walt
On 2/7/2012 4:27 PM, Matthew Hunt wrote:
DPreview broke the news:
http://www.dpreview.com/news/2012/02/07/Pentax_In-development_lenses
Model name (tentative): smc PENTAX-DA 560mm F5.6
- Unifocal super-telephoto lens for use with K mount
interchangeable-lens digital cameras
- Sharp, well-defined images — particularly with distant subjects —
thanks to the adoption of optics used in astronomical telescopes
- Market launch scheduled for 2012
Model name (tentative): smc PENTAX-DA 50mm F1.8
- Unifocal standard lens for use with K mount interchangeable-lens
digital cameras
- Maximum aperture of F1.8 for high-quality images with a superb
rendition of depth and natural bokeh (out-of-focus) effect
- Market launch scheduled for 2012
--
Don't lose heart! They might want to cut it out, and they'll want to avoid a
lengthily search.
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