bobatkins Posted July 23, 2007 Share Posted July 23, 2007 Simple question. Does either the K10D or K100D give any kind of electronic focus confirmation (flashing light, beep etc.) when used with manual focus lenses, or can focusing only be judged by the image on the viewfinder screen? Link to comment Share on other sites More sharing options...
j_anon Posted July 23, 2007 Share Posted July 23, 2007 There is a focus confirmation. I think you have to turn it on in one of the menus. Link to comment Share on other sites More sharing options...
michael s. Posted July 23, 2007 Share Posted July 23, 2007 Partial answer to your question.<p> K10D<p> When camera is set to MF with a Pentax DA (autofocus lens) mounted, three (3) forms of confirmation of manual focus appear:<p> - red rectangle(s) light up in selected mf area(s)<p> - beep<p> - hexagonal light flashes in viewfinder readout above the letters "MF" Link to comment Share on other sites More sharing options...
bobatkins Posted July 23, 2007 Author Share Posted July 23, 2007 Thanks. Canon AF lenses in manual focus mode do the same (give visual and audible confirmation). However manual focus lenses do not give any focus confirmation unless you use a special 3rd party adapter with electronics built into it. EOS bodies turn off the focus confirmation system unless they sense an EOS AF lens mounted on the body. I'm wondering if Pentax allow the body to provide AF confirmation, even when a non-AF lens is mounted. The first answer here would suggest that they do. Link to comment Share on other sites More sharing options...
jerry thirsty Posted July 23, 2007 Share Posted July 23, 2007 The first answer is correct. You don't need any special adapter for the confirmation light to work. It also works with M42 and T-mount lenses. Link to comment Share on other sites More sharing options...
40mm Posted July 23, 2007 Share Posted July 23, 2007 Yes. Both the K100D and the K10D provide focus indicators with both older manual focus lenses and modern AF lenses (when the camera/lens is set for manual focus). If the switch on the camera body is set to MF, there is a hexagonal signal in the viewfinder's LCD readout, the selected red focus patch within the viewfinder will illuminate, and a focus confirmation beep can be heard when the camera achieves focus. There are menu settings for disabling the red patch in the viewfinder and the audible beep, should you prefer. If an older manual focus (only) lens is mounted and the switch on the camera body is set to AF, the shutter will refuse to fire unless the camera detects focus. This can sometimes be useful for 'focus trapping' a moving subject (with the shutter release in continuous mode). Link to comment Share on other sites More sharing options...
petrana_batik Posted July 23, 2007 Share Posted July 23, 2007 FWIW, the K10D's AF confirmation is much more precise than what Nikon has to offer. Link to comment Share on other sites More sharing options...
dogbert Posted July 24, 2007 Share Posted July 24, 2007 Interestingly the EXIF data from the Pentax/EOS focus confirmation adapter I have says that the lens focal length is 50 mm regardless of what actual lens I am using. Obviously the adapter does not know what MF lens is mounted to it, but it provides some EXIF information anyway. Link to comment Share on other sites More sharing options...
alan_krantz Posted July 24, 2007 Share Posted July 24, 2007 Yep. Makes me think the K10D and new zeiss lenses might make a very interesting combination.... Link to comment Share on other sites More sharing options...
bobatkins Posted July 24, 2007 Author Share Posted July 24, 2007 But Pentax is the only one with image stabilization in the body. So they do win that one! The Canon EOS FC adapter works pretty well with most lenses (see http://www.bobatkins.com/photography/reviews/m42_eos_focusing_adapter.html), though you have to manually stop the lens down since it's an all electronic interface with no mechanical coupling to the iris. I think you still get auto iris operation with K mount lenses on the Pentax right? Are screw mount lenses manual stop down only, or do they also work in auto-iris mode? Link to comment Share on other sites More sharing options...
Sandeha Lynch Posted July 24, 2007 Share Posted July 24, 2007 M42 lenses are stop-down only. There's nothing to trigger the iris. K-mount lenses are auto iris when the camera setting is M for manual exposure. On the K10D, at least. Link to comment Share on other sites More sharing options...
david_wright3 Posted July 25, 2007 Share Posted July 25, 2007 I have a K100D and the simple answer to your question is "Yes". A useful technique with an MF lens mounted is to leave the focus switch on AF. On this setting the shutter will not operate unless the image is in focus. Hold down the shutter release button whilst adjusting focus and as soon as focus is achieved the shutter will automatically trip and the picture will be taken. This is a very fast method of operation. Link to comment Share on other sites More sharing options...
scott_gardner1 Posted July 27, 2007 Share Posted July 27, 2007 Thank you for reinforcing my decision to move from Canon to Pentax. ;o) Link to comment Share on other sites More sharing options...
a few images Posted August 10, 2007 Share Posted August 10, 2007 When using manual focus lenses you can set the focal length in the camera to match that of the lens. Then, when you look at your EXIF data, it will match the lens - I know as I did NOT do this one time and wondered why my 28mm prime photos had EXIF data showing 100mm. Link to comment Share on other sites More sharing options...
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