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Forum: Pentax K-3 12-06-2014, 09:34 PM  
ISO 6400 Comparison K-3, X100s, RX100
Posted By LeeRunge
Replies: 42
Views: 3,501
It's looking good for the K-3. I probably bugged the software when I initially got it changing all kinds of settings. Reinstalling firmware seems to have fixed it, or the 5.7 LR update although the older shots look the same so I'm guessing firmware.

As for the X100s, yes! It's got one hell of a 16mp sensor. I'm looking forward to the 24mp sensor coming out soon.
Forum: Pentax K-3 12-06-2014, 04:01 PM  
ISO 6400 Comparison K-3, X100s, RX100
Posted By LeeRunge
Replies: 42
Views: 3,501
Well I have been obsessed with this all day trying everything to see if the camera is physically defective or it's something software related. I ran everything up against the lens calibration tool, Lenses are all functioning fine with AF, so no issue there. The DA*60-250 just isn't fast enough to catch my dog running right at me.

I reinstalled 1.11 firmware and upgraded LR to 5.7 from 5.6. Something happened when I did that. I honestly feel the AA filter was bugged and stuck in the AA on setting as I tried bracketing them and they all looked the same. This is what they look like now, more like a sensor with no AA filter. I think the AA filter was stuck on somehow in the software. This looks even more clear on my monitor. Big improvement.

Another thing when I was checking all this. The K3 is outresolving the 16-50 at F2,8, it's soft in this area and you can't really see any improvement between the K5. When you stop down you see the increase in detail. Looks like we are hitting the limits on some of these lenses. The K-3 IS out-resolving the X100s now, although that Fuji sure holds it's own.
K3/K5 Firmware reinstall
K5 K3 fixed by leerunge, on Flickr

K3 X100s 5.6

K3 X100s fixed by leerunge, on Flickr
Forum: Pentax K-3 12-06-2014, 01:56 PM  
ISO 6400 Comparison K-3, X100s, RX100
Posted By LeeRunge
Replies: 42
Views: 3,501
I'm returning this K-3 for another monday. I'm convinced something's not right with it. I ran every lens I own through checks against the K5 and X100s with a Spydercal lens focus adjustment tool. Only one lens needed a fine adjustment, the DA* 16-50. I don't think it's an AF issue though. It acts like the AA filter simulator is stuck on. Seems to make very little if any difference when you switch it on or off. The X100s has no AA filter and it's substantially sharper which is what I'd expect from the K-3. I tried live view, through the viewfinder and manual focus, they are just soft in everything. It just looks like an enlarged version of the K5. From the other photo's posted it looks like something is wrong with the sensor. I even reinstalled the Firmware to check if that would help. V 1.11 which was on the camera.

What I expect from the K-3 is the same level of resolution you see in the X100s shots having no AA filter.

Norm I should be getting more keepers, I've used the 60-250 with a K7 and then the K5 and it's pretty bad, but this is really bad.


From the Spydercal using the DA 16-50 at 23mm. Keep in mind the Fuji is a F2.0 lens and it's stopped down to 2.8. The DA* isn't it's best at 2.8. At any rate the K-3 looks pretty fuzzy.

23mm F2.8 ISO 100

K3/K5.



K3 X100s



K5 X100s

Forum: Non-Pentax Cameras: Canon, Nikon, etc. 12-05-2014, 05:56 PM  
Nikon D750
Posted By LeeRunge
Replies: 535
Views: 38,023
12mp is plenty for just about everything other than cropping and huge prints. A7s also is excellent in low light. If sony rounds out the lens lineup and keeps putting out A7's that cover everything they will have a strong FF brand. They are also very competitively priced.
Forum: Pentax K-3 12-05-2014, 05:16 PM  
ISO 6400 Comparison K-3, X100s, RX100
Posted By LeeRunge
Replies: 42
Views: 3,501
Yep, I'm focusing in manual in live view to eliminate any AF issues. I think I'm going to exchange this one for another. If that doesn't work out I think a Nikon D750 is in my future.

I just tried it out with the dogs running around. Like the K7, K5 that came before it AF-C is near worthless with the DA* 60-250. I think I got 5% keepers and the rest hopelessly out of focus. I didn't come to Pentax for AF. If you are in need of a camera that can track a running dog I would head strait for Nikon and Canon. This was an act of frustration. AF performed absolutely unacceptable with a dog running either strait or 45 degree angle crossing in your direction. This is not an action camera, that is for sure.

9/10 look like this in AF-C



Once and a while you get a keeper, honestly your better off using MF.

Forum: Pentax K-3 12-05-2014, 03:11 PM  
ISO 6400 Comparison K-3, X100s, RX100
Posted By LeeRunge
Replies: 42
Views: 3,501
Yeah I'm not getting that. It's almost like mine has the AA filter simulator stuck on or something. I'll try checking under some other conditions and my 100mm prime. If I don't get a better result I'll send this one back for an exchange. You're obviously getting a huge resolution boost with yours.

Thanks so much for checking Norm.

---------- Post added 12-05-2014 at 03:22 PM ----------

60mm, F8 1.0" and 1.3 on the K5 for the same exposure, WB looks different, SR off and Tripod with delay.


I think somethings not right, it looks like the AA simulator is stuck on (it's set to off).

Forum: Pentax K-3 12-05-2014, 02:38 PM  
ISO 6400 Comparison K-3, X100s, RX100
Posted By LeeRunge
Replies: 42
Views: 3,501
I don't think I missed anyting but I'm a human.


I'm not trying to bash the K-3 at all, just worried mines not quite right. It's new, just arrived from Adorama this week. I guess I just expect it to outresolve the older K5 with an AA filter. I'm loving everything about this camera except for the sensor right now.

Thanks for checking against your K5, I'm curious to see the result. I'm pixel peeping to get a feel for the differences, normally I don't worry about the 100% magnification as you generally never look that close at a photo.
Forum: Pentax K-3 12-05-2014, 02:21 PM  
ISO 6400 Comparison K-3, X100s, RX100
Posted By LeeRunge
Replies: 42
Views: 3,501
I'm thinking something's not right with mine. It *should* be outresolving my K5. I would expect more from no AA filter and 24mp.


Note I'm not PP anything in these RAW's. They are strait from the cards into Lightroom and then set grabbed with a screenshot tool. Those are manual focus, so AF has no input and the DA 60-250 has a collar sleeve tripod mount which I used. So basically I focused and switched body's with the same settings.


Should I return this one? Still looks mushy when PP. Maybe the DA* cannot resolve 24mp? I wish I had a supersharp prime.


I added some black, reduced exposure 3/4th's of a stop and added sharpness to both, same settings on each. I usually run minus a third to half stop of EV on Pentax's to avoid overexposing clouds and highlights.


Forum: Pentax K-3 12-05-2014, 01:42 PM  
ISO 6400 Comparison K-3, X100s, RX100
Posted By LeeRunge
Replies: 42
Views: 3,501
Same settings, both in RAW at 250mm. The K3 exposes brighter than the K5 at the same setting. I'm seeing this across the board on my DA* 16-50 and the 60-250 which are the best lenses I have. The K3 is overexposing when the meter says it's exposed. The images look like washed out versions of the K5 that have been blown up larger. I would have though the lack of AA filter would have been a boost to resolution but it's not looking like that at all.

I disabled the SR function on both and they are on a tripod with a delayed release so no shake, also no wind to shake it. Both are manual focused to eliminate that which was done in live view zoomed in very carefully.

---------- Post added 12-05-2014 at 02:14 PM ----------

Heres another set

200mm 1/50th F11 ISO 100 SR off, tripod 12 second delay. Body switched while lens was on tripod, focus exactly the same for each.





Forum: Pentax K-3 12-05-2014, 01:29 PM  
ISO 6400 Comparison K-3, X100s, RX100
Posted By LeeRunge
Replies: 42
Views: 3,501
I was testing the low ISO on the K3 and my other camera's to see how it looks, honestly I think something may be wrong with mine. It's looking worse than my K5, very soft in all photo's. I thought is was a lens issue with the 18-250 then I took some side by sides with the DA*, this K3 is mushy.

1/50th F16 ISO 100 RAW Sunny day at noon. Using the DA* 60-250. Shake reduction off and on a tripod with a delayed release.

Forum: Pentax K-3 12-05-2014, 10:54 AM  
ISO 6400 Comparison K-3, X100s, RX100
Posted By LeeRunge
Replies: 42
Views: 3,501
This may be true. Another point on AF speed, while I had my 7d, the 17-50 with USM was a fast focusing lens, substantially more the the DA*. On the other hand the Tamron superzoom I also had was quite slow, really the same as the Sigma 18-250 I have for the Pentax now. If you were comparing a 7d with that Tamron and the Pentax with the Sigma the speeds would be very close. I guess what I'm trying to say is not everything is lightning fast AF in Canikon land. You have to pay lots of money to get the faster USM lenses that take advantage of that AF system.

Anyone out there had a Sigma model that was as fast as a Canon 17-50 2.8? It would be interesting to see a comparison of a fast third party lens on a 7dii and K-3.
Forum: Pentax K-3 12-04-2014, 07:12 AM  
ISO 6400 Comparison K-3, X100s, RX100
Posted By LeeRunge
Replies: 42
Views: 3,501
Fixing the lens motors would improve AF speed greatly. The DA* lineup should be upgraded to something on par with Canon USM given the prices.

I'd like to see a few faster primes as well. Fuji's making me jealous.
Forum: Pentax Forums Giveaways 12-03-2014, 05:15 PM  
Win an FA 31mm Ltd: PF 3 million post giveaway!
Posted By LeeRunge
Replies: 2,237
Views: 102,390
;)

Rolling the dice!
Forum: Pentax K-3 12-03-2014, 12:56 PM  
ISO 6400 Comparison K-3, X100s, RX100
Posted By LeeRunge
Replies: 42
Views: 3,501
The D4s would be awesome, but I think I'd rather use a A7s for the compact size. I take a lot of photo's at night or dawn/dusk as I work overnight hours a lot. The A7's are very attractive, I'm just waiting on the lens lineup to pan out, or the Pentax FF to appear. One thing that I like about the A7 is the evf. I have that on the x100s and it's much much better for low light use. EVF looses during the day but win's at night.

And a 645z would be pretty nice for landscapes haha. Lottery ticket...where are you!

---------- Post added 12-03-2014 at 12:58 PM ----------




I've mentioned before that If I were starting from scratch I would look very seriously at the XT-1. Fuji has a really nice lens lineup with a few key high end zooms coming to round it out very soon. I don't think it's worth the switch if you have Pentax gear but a good option if your starting in APS-C.
Forum: Pentax K-3 12-03-2014, 07:01 AM  
ISO 6400 Comparison K-3, X100s, RX100
Posted By LeeRunge
Replies: 42
Views: 3,501
Downsizing the 24mp to 16mp doesn't seem to make much difference. K3/5 and X100s are very close anyway in RAW. Fuji just has a small advantage unless your using Jpeg's.

One thing I'm noticing is you really need to hold this camera steady to get sharp images. This will probably get worse when the even higher (50mp) resolution camera's come out.

---------- Post added 12-03-2014 at 07:09 AM ----------



Norm I see what your saying. ISO 6400 (or really anything over 1600) should be avoided if possible. I tend to do a lot of shots in low light or in the dark hence my comparison. Really it's just a look at the outer limits of performance. DR is a much more important trait in a sensor and the K3 and K5 do very well in that regard, better than the X100s. Fuji in many ways saves itself with it's Jpeg production, its really good.

At low ISO levels the 24mp K3 should be better than the other options in RAW. Even the RX100 performs 90-95% of what the K5 does at low ISO (without the depth of field and less DR). Honestly I've seen comparisons of the K3 and Nikon D610 which look nearly the same at low ISO. For landscapes it really shouldn't matter if your using APS-C or FF. Birding seems to favor APS-C for the telephoto crop factor because that 400mm L glass is kinda pricey!
Forum: Pentax K-3 12-02-2014, 06:47 PM  
ISO 6400 Comparison K-3, X100s, RX100
Posted By LeeRunge
Replies: 42
Views: 3,501
updated with manual mode 1/20th 5.6 ISO 6400 RAW. K3 and K5 are using a DA* 16-50 at 22mm (tried for 23 to match the Fuji) RX100 is at 28mm as that's as wide as it goes.

K3 X100s


K3 K5



K3 RX100




I've got to say after comparing these camera's that the X100s produces the best images by a tiny margin in RAW. Fuji's Jpeg's blow away the K3 and K5 by a large margin. K3 and K5 are VERY close in iso performance. Honestly don't buy the K3 for the sensor, buy it for the other upgrades.

As you can see the the X100s isn't faking it's ISO at all. I'm actually a bit let down by the 24mp sensor in the K3 right now. I do however love all the other upgrades and it's worth it for those at the lower price they go for now.

I'm still amazed at how well that RX100 point and shoot does vs APS-C, that's one bad ass little sensor in there.

X100s get's the best sensor and Jpeg engine IMO
RX100's are amazing point and shoots.
K3 has a great WB meter. That light was yellowish and it captured it accurately.
K5 is still a great camera with a sensor that holds up all these years later. The K5ii without filter probably equals the X100s in RAW. (X100s is the same sensor as the XT-1)
Forum: Non-Pentax Cameras: Canon, Nikon, etc. 12-01-2014, 12:23 PM  
Nikon D750
Posted By LeeRunge
Replies: 535
Views: 38,023
95% of people couldn't tell if a shot came from a D750, K3, Sony A7, Nikon D7100 etc. 75% probably couldn't tell if it came from a point and shoot or iphone without exif.


The photographer is the best piece of equipment available. If the images suck, upgrade that part.


FF still is a better tool for shallow DOF. ISO and DR differences are pretty negligible from 100-6400 ISO these days. Fast AF is great for a few things but most photography doesn't require it. I'd rather have reliable focus in the dark.
Forum: Pentax DSLR Discussion 12-01-2014, 11:55 AM  
Switched from Canon to Pentax
Posted By LeeRunge
Replies: 45
Views: 5,068
We definitively need some new DA* lenses with fast motors to get the most out of the body's AF. Canon/Nikon are way ahead there. And your right about the NX1, it looks really good and has a pretty good set of lenses. The primes are inexpensive. The Camera Store just reviewed it and had good things to say except for the AF. They said the 28mp BSI APS-C sensor is "FF like" in iso performance and the best available for APS-C. So much for more pixels being worse for that!
Forum: Pentax DSLR Discussion 12-01-2014, 11:09 AM  
Switched from Canon to Pentax
Posted By LeeRunge
Replies: 45
Views: 5,068
I initially went Pentax as my first DSLR (K7). I then picked up a 7d with 17-50 2.8 to try out Canon. I sold it in 6 months for nearly what I paid during the shortages associated with the tsunami. The only thing I missed from Canon was the autofocus and the fast lens motors. Pentax isn't even close to catching up to those two features yet. Unfortunately you have to pay big dollars to get the best lenses for Canon. If I wanted the same weather sealing as the kit lenses and a K7/5/3 I would need to buy L glass for over 1k a peice.

I've been happy with the K7/5/3 over the years despite a few drawbacks vs the other brands. If I had to start fresh I'd be seriously tempted by the Sony A7's and Fuji XT-1 though. I wish we had the 56mm 1.2 and 23mm 1.4.
Forum: Pentax K-3 12-01-2014, 09:49 AM  
ISO 6400 Comparison K-3, X100s, RX100
Posted By LeeRunge
Replies: 42
Views: 3,501
I'll post some at what the light meter suggests. I don't think the noise pattern's will change much from using each of them, It's interesting how underexposed the meter's were for the K-5 and RX100 compared to the K-3 and X100s . In RAW Fuji/Pentax are very very close. In JPEG Fuji's engine is just much better at dealing with noise. I ran some other comparison's with the K-5 and Fuji and they are nearly the same (little smaller grain on Fuji) in RAW to iso 6400 (Fuji's max in RAW). I wonder how close we are to the physical limits of sensors and noise these days as the gap between APS-C and Full Frame is very close with some point and shoots making large leaps (RX100's).

---------- Post added 12-01-2014 at 09:51 AM ----------




That Samsung sensor seems to perform very well in ISO, hopefully the DR is impressive as well. Full Frames really don't have much advantage in ISO like they used too. It's just DOF difference these days.

Shame the AF is not great. I wonder if that's compared to a 7d ii or a K-3. Pretty impressive from Samsung anyways.
Forum: Pentax K-3 12-01-2014, 09:42 AM  
Almost bought a K-3
Posted By LeeRunge
Replies: 34
Views: 3,028
I held out until this deal for the grip and camera came along. 796 for the grip/cam/32gb sd card was too much to resist.

The K-3 images are very similar to the K-5 in iso and DR performance. The rest of the K-3 is more refined. It's much faster to operate, has more accurate and decisive autofocus. The AF is also much improved in dim light. Dual card slots are very nice. I have mine set one for jpeg and one for RAW. Video is much improved if you care for that as well. Metering is also more accurate. It's overall a great refinement but not a large leap. I found the K-7 to K-5 jump more dramatic with the big boost in sensor performance. This one is just a resolution bump in that dept.

Pentax for me has the best handling out of any camera I've used. I've owned Canon/Sony/Fuji/Olympus camera's and I prefer the layout and use of Pentax by far.

At the lower prices it's a worthy upgrade until the FF comes along. I'm seeing Sony A7's going for 1298 now so I hope Pentax prices it competitively.
Forum: Pentax K-3 11-30-2014, 07:08 PM  
ISO 6400 Comparison K-3, X100s, RX100
Posted By LeeRunge
Replies: 42
Views: 3,501
Light meter says 4.4 EV/ 52 LUX. 1/20th at 5.6 ISO 6400. Interesting that the Fuji picked the same exposure as the meter and the Pentax/Sony underexposed by a certain degree, that explains the darker exposure on the others.

4 EV is candlelight so not a lot used in those photo's. The K-3 got the most accurate white balance, the light is actually yellowish to the eye. The others made it looks white.
Forum: Pentax K-3 11-30-2014, 04:17 PM  
ISO 6400 Comparison K-3, X100s, RX100
Posted By LeeRunge
Replies: 42
Views: 3,501
It produces excellent images. The meter goes for brighter settings though, note the 1/20th vs 1/30th for the K-3. The K-5 and RX100 went for 1/50th and 1/60th with darker results at 0EV.

I'm sure someone will chime in with Fuji fakes everything on the X100s but I haven't seem that. They are all very close in exposure if you use the same settings in manual. I'd say Fuji even has a *slight* edge in high ISO over both the K-5 and K-3. In real world shooting they are all about the same once you go through post processing.

Pentax camera's have a far better menu/control setup vs Fuji. Fuji gives me some "wtf" moments when I'm trying to find something.
Forum: Pentax K-3 11-30-2014, 03:40 PM  
ISO 6400 Comparison K-3, X100s, RX100
Posted By LeeRunge
Replies: 42
Views: 3,501
I recently picked up a K-3 to upgrade from my K-5. I figured I'd post a few comparison RAW's with my other camera's for those who are curious.

I'm happy with the camera, it's very very close to the K-5 for low light but with a big boost in resolution. More importantly though it's much faster to operate and more refined in general, a great upgrade. And for 796 with the grip a steal.

Here's some RAW captures with the K-5, X100s and RX100 for comparison. Note the RX100 and X100s only go to ISO 6400 in RAW.

I used each camera's meter to 0 EV and ISO 6400. Some very different settings where picked. In general the K-3 and X100s are a much brighter exposure and used longer shutter settings while the RX100 and K-5 picked faster shutter and are a bit darker. Had I used a standard shutter they would have all been similar in exposure.

Overall noise for the K-5, K-3 and X100x are very very close. The noise looks worse on the K-3 at full magnification but great at normal crops. It's very much like a 24mp version of the K5. The X100s exposes much brighter with it's meter than any of the others. Had I used -.5 EV or so the shutter speeds would have fallen in line with the K-3 as would the exposure. The little RX100 is a great point and shoot as you can see from it's much smaller sensor.

I should add the JPEG engine on Fuji is far far better than either the K-3 or K-5 , I keep the Pentax's in RAW and the Fuji to Jpeg. Sony's JPEG engine is the worst however turning everything to that smooth plastic look if you get anywhere near a high ISO. All of them produce excellent low ISO shots with the K-3 and X100s being the best. Fuji honestly does have some mojo in the colors of those jpegs and you really need to work the Pentax RAW's to get them where you want it in post.

35mm equivalent or as close as I could get it was used for each. DA* 16-50 for the Pentax's.

K5 1/50 5.6
K-3 1/30 5.6
X100s 1/20 5.6
RX100 1/60 5.6


K-3 X100s



K-3 K-5



K-3 RX100

Forum: Non-Pentax Cameras: Canon, Nikon, etc. 09-30-2014, 07:28 AM  
Trip through the Rockies
Posted By LeeRunge
Replies: 17
Views: 858
Great shots!
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