Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
11-04-2012, 10:09 AM   #31
New Member
Shaarawy's Avatar

Join Date: Aug 2011
Location: Cairo
Posts: 13
Can one conclude that the garanteed solution is using the micro focus adjustment (taking in consideration how far the subject is) ??!
Or LV.. or finally, maunual focusing ??!

Btw.. Is that Canon manual focusing screen the only one there ?

I haven't got a K-5 yet, still using films! .. Is the K-5 II really better regarding FF ?!

Thanks everybody for valuable tests and photos, this is very much appreciated!
Shaarawy
_______________
Super A / 50mm f1.4 / 28-135mm f4

11-04-2012, 04:04 PM   #32
Pentaxian




Join Date: Jun 2009
Location: GMT +10
Photos: Albums
Posts: 10,845
QuoteOriginally posted by Shaarawy Quote
Is the K-5 II really better regarding FF ?!
The K-5 II (and the K-30) seem to have addressed all the known, reported issues.
11-05-2012, 02:01 AM   #33
New Member
Shaarawy's Avatar

Join Date: Aug 2011
Location: Cairo
Posts: 13
Yes, i've read they "seem" to be performing better.. waiting for some users' confirmations though!
Thanks anyways Rawr
11-05-2012, 03:51 AM   #34
Pentaxian




Join Date: Jun 2009
Location: GMT +10
Photos: Albums
Posts: 10,845
Since the K-30 and K-5 II both have new AF hardware specifically designed to deal with some of these issues, you might like to browse the K-30 area of the forum, where some K-30 users explicitly say that there are no AF problems with tungsten and low-light.

11-05-2012, 05:09 AM   #35
Senior Member
mbukal's Avatar

Join Date: Jan 2011
Location: zagreb
Posts: 173
repeat and explicitly states the Pentax K-30 has the perfect focus (in its class) and there's absolutely no problem with ff and bf even when tungsten - fluorescent light or at high aperture even at high ISO, the focus is much better than the Kr and K-5 (fast - accurate - determined), I was the owner Kx and Kr and I've used the K-5 and now I'm the proud owner of K-30 , I'm talking from experience and not read any reviews

Last edited by mbukal; 11-05-2012 at 06:19 AM.
11-05-2012, 07:49 PM   #36
New Member
Shaarawy's Avatar

Join Date: Aug 2011
Location: Cairo
Posts: 13
Yes Rawr and here's Mbukal confirming too Thanks guys.. Seems i really need to browse and read more!
Interesting to know that Pentax are dealing with the core thing instead of, for example, adding some useless extra focus points
11-05-2012, 08:49 PM - 1 Like   #37
Pentaxian




Join Date: Jun 2009
Location: GMT +10
Photos: Albums
Posts: 10,845
QuoteOriginally posted by Shaarawy Quote
Interesting to know that Pentax are dealing with the core thing
Indeed.

It is worth noting that the issue of tungsten and low-light interfering with AF isn't unique to Pentax. Case in point:

QuoteQuote:
New in the Canon EOS 7D is a feature that tweaks the behavior of the AF system based on color information from the new color-sensitive exposure sensor, reducing AF problems often encountered when shooting under artificial illumination. Canon staff told us that back-focus errors can relatively common under artificial lighting, particularly in stadiums or other sporting venues. Canon didn't go into details of why this might be the case, or what specifically they did to correct it, but it's not too hard to figure out: Without special correction, a lens system will bring different wavelengths of light into focus on different planes. High-quality camera lenses are usually well-corrected apochromats, so this isn't a problem at the image sensor. The relatively simple optics (lenses and prisms) in AF systems are another matter, though, so it's very likely that long (red) wavelength light would produce a different focus point than would short (blue) wavelength illumination. By taking the color of the light source into account, the camera can compensate for this tendency, in much the same way that it can handle micro focus adjustments for different lenses.
Canon EOS 7D Camera Optics - Full Review

There were some hardware features of the K-5 that dealt with this to a degree, then Pentax dealt with it further via K-5 firmware updates. Now with the K-30 and K-5 II, Pentax have continued their work to deal with this issue, and by all accounts it sounds like they have done well.
11-06-2012, 03:28 PM   #38
New Member
Shaarawy's Avatar

Join Date: Aug 2011
Location: Cairo
Posts: 13
Yes they did.. Thanks for the info!
I guess the next step should be some DC lenses !!

Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
af, camera, dslr, focus, front, front focus issue, k-5, k-5 ii, k-5 iis, k5, lenses, light, pentax k-5
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
K5: What's the latest findings in Mixed lighting Front Focusing issue? Katsura Pentax K-5 48 11-05-2012 05:40 AM
Incadescent and tungsten front focus: how much autofocus fine adjustment? Eruditass Pentax K-r 7 10-20-2011 09:46 AM
Does the K5 af well in Tungsten light even with new firmware? mrjamesabels Pentax K-5 6 03-30-2011 03:24 PM
Comparison of K-5 low light focus accuracy with v1.01 and v1.03 of firmware tram57 Pentax K-5 3 03-20-2011 08:13 PM
Front Focus and tungsten light question Big G Pentax DSLR Discussion 8 01-18-2010 12:25 PM



All times are GMT -7. The time now is 06:28 PM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top