Go Back   Steve's Digicams Forums > Digital SLR and Interchangeable Lens Cameras > Pentax / Samsung dSLR, K Mount Mirrorless

Reply
 
Thread Tools Search this Thread
Old Oct 7, 2006, 4:16 PM   #1
Junior Member
 
cameranoob's Avatar
 
Join Date: Sep 2006
Posts: 15
Default

I'm really hoping someone can help a frustrated new owner of a K100D out -


Just received my K100D last week and decided to take it out for some very early morning pics. Numerous times I would press the shutter release button half way down and the focus indicator would light up. I would then attempt to push the shutter button the rest of the way down but nothing would happen.

It was very early morning, outside and most of the problems were in heavy wooded areas with a lot of shade. I realize that low-light conditions can be a problem with Auto-Focus, but even little point and shoots I've owned in the past never had this kind of issue. This has been happening intermittently since I received the camera but this morning was the worst.
I guess I have 2 main questions -


1. The focus indicator was on and not blinking - doesn't this mean that the camera is focused and it should allow me to shoot?
2. How can I determine if this is a "camera issue" or a "user issue"?


I am very new to the DSLR world so my money would be on "user issue" but I want to make sure before the return period ends from the camera shop where I purchased.

Any suggestions for testing if the Auto-focus is functioning correctly? Would REALLY appreciate any help!!!!
cameranoob is offline   Reply With Quote
Sponsored Links
Old Oct 7, 2006, 4:56 PM   #2
Senior Member
 
Catbells's Avatar
 
Join Date: Nov 2004
Posts: 874
Default

I'm not a K100D but have had my *istDS for about 18 months & I can honestly say I haven't experienced, what I would call, real focus issues. There have been occasions when focus lock has failed, mainly for the reasons stated in the manual, but it has always been possible to refocus on something else in the frame to achieve focus lock.

OK. So how's this gonna help you. Firstly, I don't believe that the focus mechanisms are that much different (ignoring 'Anti Shake').

May I suggest that you start off by setting the camera on AUTO (making all options in the setup - DEFAULT) & take it out under normal daylight conditions. Take some pretty standard shots - landscapes, buildings, portraits, even close ups. You should have no problems in obtaining focus lock.

Then try the camera out in different lighting conditions - pop up the flash when lighting falls to see if the flash 'burst fires' to obtain a focus lock or just fires once to read the exposure.

Make sure that the lens is firmly seated - try cleaning the contact area with a cotton bud. I know the camera is new & should be clean but I've experienced a couple of instances where the focus has locked just like you've explained & found this to be the problem.

If this fails, then return it straight away & demand a replacement which you should evaluate in the the store before leaving to ensure that it fully functional.

Let us know what the outcome is 'cause the K100D should be a damn good camera & I envy your purchase.
Catbells is offline   Reply With Quote
Old Oct 7, 2006, 5:42 PM   #3
Junior Member
 
cameranoob's Avatar
 
Join Date: Sep 2006
Posts: 15
Default

Great suggestion about using AUTO mode only. I was using AV mode but to be honest , I'm still learning and not always confident in my settings.

Still confused about why the focus indicator light comes on though. I assume that means the camera has found focus and it should allow me to take the shot.

One thing I forgot to mention in my original post is that the flash indicator was blinking. According to the manual, this means that the camera is suggesting I use flash. But I thought as long as the focus indicator light was solid I could still take the shot.

Excuse my "new-ness" but the flash can be used to obtain focus lock and read exposure? What is the difference between "burst firing" and a regular flash?

I think you're pointing me in the right direction. Thanks so much again.
cameranoob is offline   Reply With Quote
Old Oct 7, 2006, 5:57 PM   #4
Senior Member
 
Catbells's Avatar
 
Join Date: Nov 2004
Posts: 874
Default

cameranoob wrote:
Quote:
One thing I forgot to mention in my original post is that the flash indicator was blinking. According to the manual, this means that the camera is suggesting I use flash. But I thought as long as the focus indicator light was solid I could still take the shot.
The 'flash' light, lights when the shutter speed falls so low that camera shake could be a problem.

I've just set my *istDS to AV indoors at night with minimal lighting & I can obtain exposure lock with no problem & the shutter is released - albeit with a slow shutter speed at an aperture of f34. Popping up the flash changes the the shutter speed to 1/60 but the shot is underexposed. Changing the Av value to something more realistic like f5.6 produces a correct exposure.

Incidentally, the flash fired once to obtain an exposure setting.
Catbells is offline   Reply With Quote
Old Oct 7, 2006, 10:35 PM   #5
Senior Member
 
mtngal's Avatar
 
Join Date: Nov 2005
Location: Frazier Park, CA
Posts: 16,052
Default

My K100D doesn't do that - if its on autofocus and the light is lit, it takes the picture, regardless of how "off" the exposure is. The shutter is lighter than the DS and I've been a bit surprised a couple of times with how fast it locked and took the picture. I can't say that I've ever had the light on and not been able to shoot. If cleaning the contacts doesn't make a difference, I'd take the camera back.

Speaking of that - why should it make a difference whether the contacts are clean? If you use a manual lens, you can use AF mode on the camera and it won't take a picture until the light goes on (focus trap). If the focuslight is on and steady, wouldn't it take the picture regardless of whether the camera had good contact with the lens?
mtngal is offline   Reply With Quote
Old Oct 7, 2006, 11:19 PM   #6
Senior Member
 
NonEntity1's Avatar
 
Join Date: Jul 2006
Location: Lake Placid Florida USA
Posts: 2,689
Default

I have a K100 also and I have noticed that it does struggle in very low light. What I have noticed is that sometimes the focus light comes on and then goes off, like the camera is really not sure if it has focus or not. I have only found this to be the case in very low light. It happened several times tonight as I had my family at a theme park. The focus assist does not fire in Av mode and if your subject is close enough changing to auto mode would help in that respect.

Tim
NonEntity1 is offline   Reply With Quote
Old Oct 7, 2006, 11:33 PM   #7
Senior Member
 
nhmom's Avatar
 
Join Date: Jun 2006
Location: Southern New Hampshire
Posts: 5,202
Default

I was having the same problem with my K100D. I'm not 100% positive, but I think if you read page 124 in the manual under Using the Autofocus it tells you that in AF.S (single focus) it will lock, but in AF.C (continuous) it will continually focus. Also, read page 46 about "difficult things to focus on".

style="BACKGROUND-COLOR: #000000"I believe that when I changed mine to AF.S I stopped having the problem, unless it was something really difficult to focus on like the blue sky on the horizon of a blue ocean. I have to move it down to the water and then hold half way and recompose my scene. Or, you can change to manual focus and it won't happen.

style="BACKGROUND-COLOR: #000000"I also believe I changed my focus point from the "allover" one to the single center focus point. It's easier for me too, to remember to focus in the center on what I want the scene to be and recompose. If I remember, my latest camera before this one wouldn't do that. So, I'm a little out of practice doing it and forget sometimes.

style="BACKGROUND-COLOR: #000000"It's very late and I've had an extremely long day of walking the fair and then rescuing my son with his car broken down. Will look more tomorrow and see if that is what definitely reduced my focus problem.
nhmom is offline   Reply With Quote
Old Oct 8, 2006, 4:23 AM   #8
Junior Member
 
cameranoob's Avatar
 
Join Date: Sep 2006
Posts: 15
Default

I'mstarting to wonder if maybe Ihave a bad copy. Some other strange things have been occurring. On afew occassions yesterday, the camera would snap 2 or 3 continuous shots with one hit of the shutter release button - the settings are definately in single shot mode and AF.S (single)

A few times, I've noticed a delay in the shutter release after I've pushed the button - you could almost do a slow 2-count - one, two, then the shot. Next shot, the shutter is released instantly. Can this be normal in any situation?

I'm also wondering if this could be me needing to adjust to the new shutter release button? I know that sounds strange but on my old Canon point and shoot that I used for many years, there was a little resistance pushing half way down on the button. What I've just realized on my K100D is that the resistance is extremely light compared to my old camera. I don't really feel any resistance half way down. Not until I attempt to take the actual shot (after focus) do I feel resistance. Make sense?

I really hope I can get this figured out. I just love the K100D and will be sticking with it. Just glad I decided to pay a little more and get the camera from B & H. I almost went with a cheaper price from an online store that I read could be problematic with returns. Now I just need to decide if it's me or my copy. :?

Thanks SO much to those taking the time to respond. I've been impressed with how patient and kind most are with rookies like myself. Thanks again.
cameranoob is offline   Reply With Quote
Old Oct 8, 2006, 4:44 AM   #9
Senior Member
 
Join Date: Jan 2006
Posts: 344
Default

I have never experienced what you mention with my K100D butinstead, a few times with my *ist D bodies.

I guess you should return your K100D if you cangetthe same problem again.

RiceHigh

http://www.geocities.com/ricehigh
RiceHigh is offline   Reply With Quote
Old Oct 8, 2006, 7:16 AM   #10
TDN
Senior Member
 
TDN's Avatar
 
Join Date: Jun 2006
Posts: 1,288
Default

Have you installed the updated firmware?

http://www.stevesforums.com/forums/v...mp;forum_id=80

Install it, and see if that helps.

If it doesnt, get to the nearest authorised Pentax dealer and explain the problem to them, they should be able to help you.

TDN
TDN is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 12:07 AM.