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05-08-2011, 06:54 AM   #136
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QuoteOriginally posted by filorp Quote
Hi there! Since i bought k5 im taking a part in every "my k5 is faulty" thread.... isn't it symptomatic? I just discovered strange behavior with my wide angle zooms DA*16-50 DA17-70 and DA12-24. On the widest angle and distance over 1.5m AF seames to be totally incostistent sometimes it hit to the point but it happens 1 times per 10... the moste often front focus accures - no matter the light type and intensity. The strange thing is my DA14 works flawlesly.
What version of firmware are you on? Mine did that on 1.02, but 1.03 fixed that ( mostly )

05-08-2011, 07:20 AM   #137
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QuoteOriginally posted by Tommot1965 Quote
yep I agree smeggy.....the lenses that you buy however ..if they are quality I doubt you'll ever sell or upgrade.....thats the path im heading up at the mo

at the moment I have my eyes set on a used low shutter count D700..if when ever comes up with a low enough price for me to consider it...it has about twice the high ISO headroom over the K5..{according to DXO}...so that will keep me happy for a long while....and Ill use my D300s for sports etc where the reach is desirable.... although a 20meg something D800 would cover both of those bodies with the 1.5 crop resolution equal to the pixel density of the D300s sensor ....but for now I reckon Im better off with two bodies that will do the job of one....at least thats my thinking at the mo...

one thing I miss is the damned fine handling of the K5,,everything was so easy to operate with that body and button placement was spot on.....with the Nikon gear you have to look at the camera to change the ISO...something I did with my pentax while still at my eye....its things like that where the K5/K7 shine......and the dynamic range of the K5 is a pleasure to be sure

anyway I digress....and its clear to me that this thread is showing a huge discrepancy between fully functioning K5's and faulty K5's......I still think that the faulty K5's are in the vast minority ....but none the less its something to ponder..the brand lost me due to its inconsistency and Id venture a few more will fall to the wayside before its over ......

im truly happy that some have been fortunate to get lenses and bodies that work well with each other....I keep coming back to the forum for a look....mainly cause im interested to see a positive outcome for K5 users...possibly with FW 1.04.....plus theres a good few decent members here , and to be honest..I dont give a toss what camera/brand we all shoot...first and foremost we are aspiring photographers and mutual support should be our first requirements

I have no idea if you are correct in your assumption that most K5 owner have faulty cameras? It might be just the opposite, how can you know? How can I know?

Regardless, I will go back to the initial complaints months ago when I was hammering away at the K5 like many others. One thing that puzzled me was why I was seeing shooters that were on their 2nd, 3rd, 4th, or even 5th K5 body in an attempt to get a "good one". I just chalked it up to insanity. But....when I got my K5 and took a few shots, I promptly realized that this is no ordinary camera, and if I had a specific problem, I would go through a dozen to get one that was right. So what was happening was that those shooters were "hooked" on the fantastic abilities of the K5, and did not want to give up.......and it is now easy to see why!

My K5 is near perfect, no focus issues with any lens I have used and I have over two dozen lenses, no stains, no flash problems ( flash never worked this well on my K10D or K20D) and nothing but fast and easy shooting with my K5.

If I got a "bad" one, I would try again, and again, and again....I would climb the tallest mountain, swim the deepest sea, kiss the ugliest toad, or sacrifice a dozen Squirrels to the Pentax camera gods....(you're safe Otis!) if necessary. Would it be worth it...you bet it would!

Best Regards!
05-08-2011, 08:17 AM   #138
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QuoteOriginally posted by jstevewhite Quote
but 1.03 fixed that ( mostly )
in my case the word "mostly" is acurate....
05-08-2011, 09:00 AM - 1 Like   #139
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I haven't had my K5 long but it's one of the rare cameras that have made me happy that I bought it. I started on DSLRs with a Canon D30 10 years ago, and then owned Canons, 350D, D60, 20D, and Nikons, D200, D300, and a number of non-SLR cameras, plus m4/3 cameras from Panasonic. Some I liked much better than others. I am very often disappointed by what I buy, which I think rarely lives up to my expectations. I usually take a long time before "pulling the trigger", because I am very aware of my propensity for disappointment and remorse.

That said, the K5 makes me *very* happy. It's all there for me, the handling, the quality, the size and weight, the lenses. So I'll join Rupert in saying I'm ready to work through, or even around some issues so I can continue to use this camera and be happy with it, although I have no intention of sending any camera back unless it is truly broken and does not work as designed.

This all being said, I too have noticed some focus inconsistencies, but at this point nothing that should come in my way with the type of photography I usually do. I've found the following, which appears during testing. I was firing a few tests shots with my new 21mm DA lens, which I thought was back focusing.

I've noticed that in low light and at close focus distances (but not so close that they go below the minimum focus distance of the lens), the AF can become a bit unreliable at times, and start focusing behind of in front of the intended focus point, but more often to the back.

Now this is not based on expertise of optics or rigorous testing (because I hate setup, testing and all that jazz), but just my experience and guessing, but I have a feeling that in certain cases where the camera might have a bit of an issue finding a strong enough spot to focus on, instead of just coming back and say it can't find focus, it might go beyond and focus on something else. I've seen this behavior before, especially in the Canon 20D (which I really disliked) and its too large focus areas/points. That camera was at the same time much quicker to AF than my old D60 but much less reliable.

When the kind of issues I'm describing happened during testing, I've also noticed that by moving the camera to focus on another point in front or behind the previous spot, the camera would confirm AF without actually modifying the focus (no lens movement), in situations where it should absolutely have done so, like moving the focus point a couple inches at close range. At that point, there was no doubt in my mind that it hadn't achieved focus on the proper spot.

Anyway, just mentioning this. I might be way off but this is what I think I've found, and probably the kind of stuff that could be fixed in firmware.

05-08-2011, 09:08 AM   #140
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Just a quick question: Didn't Pentax remove the check/double check feedback from the AF on the K5 in order to boost AF speed?
05-08-2011, 09:40 AM   #141
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QuoteOriginally posted by Wheatfield Quote
Just a quick question: Didn't Pentax remove the check/double check feedback from the AF on the K5 in order to boost AF speed?
Maybe for accuracy purposes? Just guessing.....could it be made an option?
Regards
05-08-2011, 01:15 PM   #142
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QuoteOriginally posted by Rupert Quote
Maybe for accuracy purposes? Just guessing.....could it be made an option?
Regards
Just thinking out loud, but if they did, it might explain why so many people find the AF to be off just a smidge. My standard method of AFing is to let the AF lock, and then almost always lock it again before I shoot. I notice that quite often the camera corrects slightly.
05-08-2011, 03:08 PM   #143
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QuoteOriginally posted by LeChuck Quote
I'm ready to work through, or even around some issues so I can continue to use this camera and be happy with it, although I have no intention of sending any camera back unless it is truly broken and does not work as designed.
This is a good premise to go by, and I agree with you and Rupert - it's worth the effort to work through the little AF and flash imperfections that seem to be surfacing on some people's K-5s. The K10D and K20D also had its nuances, particularly with P-TTL flash, but their focusing was usually spot on. I can only hope that the K-5 will be worked around to do at least as good as this.

QuoteOriginally posted by Wheatfield Quote
My standard method of AFing is to let the AF lock, and then almost always lock it again before I shoot. I notice that quite often the camera corrects slightly
I'm with you also on this technique Wheatfield, and I can convince myself that even after the third AF confirm without any movement from the lens focus ring that it is right on the money without any adjustment. And I haven't found an instant where this is not the case.

I also entertain the thought that the check and recheck AF algorithm that gave more positive reassurance to the K10D and K20D focusing has been done away with in the K-5, at the cost of possibly being more accurate, just to speed things up. I wouldn't like to think this is the case given that focus accuracy (to me at least) is more important than speed.


Last edited by Ash; 05-08-2011 at 03:40 PM.
05-08-2011, 03:11 PM   #144
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Last night at my daughter's house, I borrowed her Canon Rebel 2 (550D) camera to compare its low light focusing with the K-5. I used the K5 with my 43mm Limited f/1.9 lens, and the Canon with its kit zoom set to about 40-45mm, both set to the same exposure settings. I tried the autofocus of both for various light intensities indoors, and compared the focus accuracy. Both cameras were, to my eye, identical in their focus accuracy, over most of their range. Only in the dimmest light did I see the K-5 begin to falter, refusing to actuate the shutter, for a distant object, or turning on the LED for a closer subject and hunting. The Canon exhibited some difficulty too. Both worked well in a light range I would consider normal for an interior room. The firmware for the K-5 was 1.03. I noticed that 1.03 inhibits the LED for objects which are further away than some limit which appears to depend on illumination. Not too sure about that. However the point is that both worked quite well in my side to side test. I didn't see the K-5 at a disadvantage, except at the lowest level, where I am OK with setting focus manually anyway.
05-08-2011, 03:31 PM   #145
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QuoteOriginally posted by Rupert Quote
I have no idea if you are correct in your assumption that most K5 owner have faulty cameras? It might be just the opposite, how can you know? How can I know?

Regardless, I will go back to the initial complaints months ago when I was hammering away at the K5 like many others. One thing that puzzled me was why I was seeing shooters that were on their 2nd, 3rd, 4th, or even 5th K5 body in an attempt to get a "good one". I just chalked it up to insanity. But....when I got my K5 and took a few shots, I promptly realized that this is no ordinary camera, and if I had a specific problem, I would go through a dozen to get one that was right. So what was happening was that those shooters were "hooked" on the fantastic abilities of the K5, and did not want to give up.......and it is now easy to see why!

My K5 is near perfect, no focus issues with any lens I have used and I have over two dozen lenses, no stains, no flash problems ( flash never worked this well on my K10D or K20D) and nothing but fast and easy shooting with my K5.

If I got a "bad" one, I would try again, and again, and again....I would climb the tallest mountain, swim the deepest sea, kiss the ugliest toad, or sacrifice a dozen Squirrels to the Pentax camera gods....(you're safe Otis!) if necessary. Would it be worth it...you bet it would!

Best Regards!


I dont think I said that the faulty K5s were in the majority...I said Minority..!!

I only base my assumptions on complaint threads such as this...and other threads that have satisfied K5 owners , such as the thread " no more tests, show us your pictures"

it seems to me that the positive threads outweigh the non positive ones ?..thus faulty K5s are in the MINORITY
05-08-2011, 07:09 PM   #146
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QuoteOriginally posted by Tommot1965 Quote
I dont think I said that the faulty K5s were in the majority...I said Minority..!!

I only base my assumptions on complaint threads such as this...and other threads that have satisfied K5 owners , such as the thread " no more tests, show us your pictures"

it seems to me that the positive threads outweigh the non positive ones ?..thus faulty K5s are in the MINORITY
Hey, my mistake and I regret the day I took those speed reading courses.....it causes me problems way too often. Anyhow, what can you expect from a guy that talks with Squirrels?
Best Regards!
05-08-2011, 11:27 PM   #147
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QuoteOriginally posted by Rupert Quote
Hey, my mistake and I regret the day I took those speed reading courses.....it causes me problems way too often. Anyhow, what can you expect from a guy that talks with Squirrels?
Best Regards!
true enough
05-09-2011, 02:49 AM   #148
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QuoteOriginally posted by Wheatfield Quote
My standard method of AFing is to let the AF lock, and then almost always lock it again before I shoot. I notice that quite often the camera corrects slightly.
I tend to do that a lot as well and I'm wondering if it's adding to the problem. Sometimes I'll notice that the focus "corrects" slightly but maybe these are the images that are actually the problem ones?

bazz.
05-09-2011, 05:02 AM   #149
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QuoteOriginally posted by Wheatfield Quote
Just thinking out loud, but if they did, it might explain why so many people find the AF to be off just a smidge. My standard method of AFing is to let the AF lock, and then almost always lock it again before I shoot. I notice that quite often the camera corrects slightly.
I tend to do this too. I have had some shots I have not been happy with and wonder if it is largely me expecting too much. getting the K5 in January meant the light was not good, meaning I was tending to use high ISO or perhaps 'too low' shutter speed. My 43mm went from bad to excellent after I gave it +10 adjustment. I, like others, have even wondered if the SR was working against me, or my central AF point wasn't properly centered. Then there's the general fact that K5 output needs more than default LR sharpening too.

On top of that the higher pixel count exaggerates any camera shake.

So, what gives? With regard to the focus accuracy, we know the central point is much bigger than the little red light, so it can be hard to know exactly what it has focused on. I have also witnessed the behaviour where I have locked focus, not really moved position, re-locked and the lens moves a little. I have also witnessed the behaviour where I have locked focus, then moved the camera to focus on something 'beyond' and it has not moved the lens!

I have also tried placing the camera in AFC mode and keeping the AF button down and gradually moving the camera - focus should change as soon as it detects something further or closer right? Well it does *most* of the time but it does not always change as soon as I would expect.

I even wonder if I need to throw the focus way off to give it more to work with, when re-focusing on objects that are not that far apart.

It's as if the AF system sometimes gets a little 'sleepy'. On the other hand I am also prepared to believe there are few real faults but something about the way some of us actually take shots that makes some difference. I tend to 'dither' - focus with the AF button, maybe recompose a little, maybe refocus, maybe hold the shutter button down half way until I am convinced I am steady enough.

I have to say though that following a little AF calibration and the use of higher shutter speeds, the keeper rate has climbed ...

Lee
05-18-2011, 08:16 AM   #150
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Hi Lee, I have just purchased my second Pentax lens for the K5, the 43mm FA. I've spent the last couple of hours rushing outside every time the sun comes out to try to calibrate this lens! I began with the +10 as a few people seemed to use this but I've gradually worked down to -2. I'm going to stick with this for a day or two and see how it goes. I've also noticed the things that you describe with the AF. Perhaps we should have a new thread where everyone can log what calibrations they are using for each lens!
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