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Forum: Pentax Full Frame
02-05-2015, 07:41 AM
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Ricoh did a lot to not disgrace name of Pentax. They deserve support.
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Forum: Pentax K-3 & K-3 II
09-02-2014, 12:43 PM
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I just want to say, that after all your recomendations, I will give k3 another chance. First I have to fight with (evil) shop where I bought this one and then I will probably take another one elsewhere. I just hope that you all are true.
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Forum: Pentax K-3 & K-3 II
09-02-2014, 02:59 AM
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Resume
I'm testing it with D7000 with 18-105 set lens and the difference is so huge that I cry inside me. D7000 focus faster and fluently, while K3 with 18-135 jumping front and back around spot. DA50mmF1.8 is even worse. I like that cheap plastic thingie, but focus is even worse than with 18-135. I wanted pentax for years, but now I will return it back. I like many features, awesome Focus peaking in live mode, stabilisation, buffer, speed, low lag and especialy WR. Damn, there is so many great things on this camera. But now, I'm disgusted how it acts when focus. I want fast device which I can trust. Not just for taking pictures of buildings and trees.
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Forum: Pentax K-3 & K-3 II
09-01-2014, 05:13 PM
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2 Stevebrot:
1] "Use AF-S and center focus point for all cameras* - when I compared them, it was.
2] "Be sure AF-S is set for focus priority" - It was.
I didn't use tripod, but these nikons even haven't stabilisation and focused without problem. I've tried similar ranges and targets, tried different focal lengts. Yes, when there is lot of light and object is nice, it focus usually fast. The point is that it won't focus at hard conditions just searching front and back. Tripod would change nothing when I made may be 30 of 30 successful focuses on nikon targeting some area when with k3 at same place and similar focus lengh and only I hear is just brrrrrrr brrrrrrr brrrrrr from lens and see blinking green dot viewfinder in may be 29 of 30 attempts (talking about AFS, center focus mode).
I borrowed cam to my much more experienced colleges whose tried same things, and one told that it's terible for so expensive body and another one told that it's something wrong but he is not sure.
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Forum: Pentax K-3 & K-3 II
09-01-2014, 04:52 PM
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2 Rawr:
First, thx for analyse. Yes, these pictures are not great sample. I've spend hours today trying all AF modes on different scenes, turning on/off SR, AA etc. Nothing changed, where K3 failed, nikons successed. First 3 images was made with DA50 F1.8. When I tested it with nikons, I had 18-135 and checked settings if they are same. I adjusted AF to +/- 2 only on may be last 10 pictures (3 of them are here) as last hope before I started to write this topic. I wanted just to show on which textures and light scenes it have problem.
1st picture) As I wrote. was with manual because in AF it is not able to focus. Even before I've adjusted AF. I've tried to focus on that wall or wall in my office (better lighting, similar texture) for many times before.
2th, 3th picture) I know that it has short depth of focus so it's blured, that is not problem. Even if it is blured because I've incorectly adjusted it to frontfocus. Problem is that it took about 5 attempts which each took few seconds before I finally get focus and same situation was before I adjusted AF. Problems with AF in live mode made me to try adjust it.
4th picture) This picture just shows area where I tested it and compared to nikons which didn't failed single time whilest k3 almost everytime.
May be it sounds chaotic. It was, and now It's 2AM here and I have 3rd coffee inside me in last 4 hours..
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Forum: Pentax K-3 & K-3 II
09-01-2014, 04:16 PM
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That sounds like I really have bad piece. I was suprised that nobody wrote about same issue on whole internet. Focus in dark was one reason why I bought K3 even that it cost 1/3 more than I wanted to put in DLRS. Typical for me. If you put one single chair with broken leg in IKEA warehouse, gues which one I will buy.
I have to test it more and then probably return it (I've bought it with 10% discount from internet shop, nobody sell set with 18-135wr in my town:( Damn, I have some events in next two weeks, where I wanted to make shots. If I keep it and send it to service later, I'm sure that they will say It's ok. 100% chance with our warranty services.
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Forum: Pentax K-3 & K-3 II
09-01-2014, 02:41 PM
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Thank you for answer.
I have two lens, booth acts same. When I look in settings, everything is in default mode. I didn't changed anything important. I'm sure that I use AF.S. I can try reset, but I've reflashed firmware two days ago so it should be reseted. That wall can be sometimes focuset in multisegment, but Nikons take it even in spot without problem, so I would expect that if six years old D90 can do that, new K3 should too. I will have to make some videos how it acts.
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Forum: Pentax K-3 & K-3 II
09-01-2014, 12:52 PM
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Hi,
first, I apologize for my english and words filled with anger and despair.
I've just bought K3 (DA18-135wr, DA50mm f1.8, fw1.11) and I'm really really dissaponted with AF, especially on lower or artifical light. Anybody have same problem?
I've tested nikon D90 and D7000 in same conditions, on same spot, with lenses on same focal lenght, same focus modes and my k3 is so terrible compared to them. Nikons focus on white wall, wooden doors, dark corner of my office without any problem in 1 second with 100% accurancy. Just press and it's focused. K3 at absolutely same condition keep moving from extreme to extreme and when I'm lucky, after 4-6 seconds it get focus, but in about 8 of 10 atempts, it wont. Even on easy patterns it's unsure. I get focus, move few cm left, then press AF button and it 5 moves front and back to get focus.
AF in Livemode is even worse. When I focus on some point and I press focus again, It focus to maximum front and then back. Slow as hell. On the other hand, when it get in focus, it's accurate.
At good light, outside, there is no problem. Problem is inside area with less light. Multisegment is usually better than spot, but it won't focus on places where I want.
I've uploaded 4 ugly, in rage made random test photos (1-3 artificial lighting, 4 daylight).
1) wall - forever problem. K3 wasn't able to focus. Photo is from manual focus. D90/D7000 no problem.
2) focused on third attemt which took few seconds
3) K3 focused but it took may be 4-5 seconds.
4) This was made on multisegment focus on may be 4th attempt. D90/D7000 get it instantly on spot focus. K3 won't. Another problem for K3 is pattern of that cabinet. Nikons get it instantly on spot, K3 never.
I've played with K3 while I wrote this and the sound of $1900 gear focusing front and back, front and back, front and back, front and back while I want to focus on my sleeping cat (photo 3) makes me absolutely crazy. It reminds me my old phone with AF. My latest phone focus faster then K3. I've bought K3 because there was soo good reviews about... everything, especialy great focusing in dark. I'm thinking about returning it, but is that problem of K3 or just my piece. I've bought batteries, lens, flash and I won't return it. If I send it to reclamation, I'm affraid that they say it's "in factory limits" as usually. I have 8 days to return it.
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