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Forum: Pentax DSLR Discussion 03-03-2019, 08:27 AM  
Are we really THAT rare?
Posted By TheOneAndOnlyJH
Replies: 5,529
Views: 713,717
Pentax is great bang for buck, but sometimes Tamron and Sigma are just cheaper and still plenty good enough. No shop pushed anything on me since I buy my gear online, but after the DA 18-135 my second lens was a $30 Sigma 70-300. (I eventually upgraded to a DA 55-300, but it cost a bit more.) I also bought a broken Sigma 18-200 that I repaired for fun. Even though I prefer the 18-135 I could see the appeal of the Sigma that would sway someone to buy it for the extra range and lower price on the used market.

In particular the Tamron and Sigma 17-50 f/2.8 are both such great performers that I can't justify the extra cost for the Pentax DA* 16-50. (Especially with the worry that the SDM could fail and turn the Pentax into a manual focus lens until I could get it converted.)

That said, I've found that official Pentax lenses are the cat's pajamas if you can afford them. My DA* 50-135 is one of my favorite lenses to use. (I just had to wait a long time to score a good deal on eBay.) I do appreciate that Sigma and Tamron provide Pentax users with extra options though.
Forum: Pentax KP 12-10-2018, 02:51 PM  
Recs wanted, 3rd party D-LI109 batteries & travel charger, memory card
Posted By TheOneAndOnlyJH
Replies: 17
Views: 1,087
Back when microSD first came out that was good advice, but I've only ever had issues with two SD cards. One old and well used one I was trying to make bootable and messed up somehow, and another I had in my rooted android phone being used as an extension for the internal storage, so many repetitive writes for app cache. That one was still readable but wouldn't allow writes, which is a failsafe when the card controller senses a major fault. Both were microSD, but what killed them was my abnormal use, not the card size or shape.

That said, for important things like pictures I only trust mainstream brands at medium capacities. Cutting edge capacities like the 256gb would make me nervous, but the tech is pretty stable now and I'm quite comfortable with Samsung and SanDisk cards 64gb and smaller. 128gb are pretty good too, but that's way too many pictures to trust to one card.

---------- Post added 12-10-18 at 05:54 PM ----------

The aftermarket chargers often charge at a higher voltage to increase charge rate and apparent total capacity. Seems useful, but it can decrease battery life over time, so I second the idea to use the Pentax charger when possible.
Forum: Pentax KP 12-10-2018, 12:08 PM  
Recs wanted, 3rd party D-LI109 batteries & travel charger, memory card
Posted By TheOneAndOnlyJH
Replies: 17
Views: 1,087
Definitely agree here. I use a pair of 64gb in my K-3 and haven't had a card loss yet, but even a single full 64gb card failure would be a big loss for me. (I'm just tempting fate somewhat.) I always empty the cards off after an important event though.

I really like the Samsung Evo Select cards on Amazon. (Basically Amazon's private version of the Evo Plus) They're microSD but come with a full size adapter and they're some of the best cards I've used. Read / write speeds are 100 / 90 mbps so they are plenty fast. Low price too!
Forum: Sold Items 08-12-2018, 04:14 PM  
For Sale - Sold: FREE D-LI90 battery with wasabi charger, Pentax remote control and a flash diffuser
Posted By TheOneAndOnlyJH
Replies: 13
Views: 814
Direct message sent!
Forum: Pentax KP 07-30-2018, 02:57 PM  
How Weather Proof is Pentax KP + HD DA 21mm Ltd?
Posted By TheOneAndOnlyJH
Replies: 20
Views: 1,526
I don't think I'd be okay with a sunroof being only WR, and definitely wouldn't settle for less... I'd be pretty pissed if my sunroof dripped, even in a complete downpour! [emoji6]

On the other hand, I wouldn't expect my door seals to be impervious to river or flood waters, so I do my best not to submerge them. In an emergency they'll handle some severe splashing though!
Forum: Pentax KP 07-30-2018, 01:14 PM  
How Weather Proof is Pentax KP + HD DA 21mm Ltd?
Posted By TheOneAndOnlyJH
Replies: 20
Views: 1,526
It's like an umbrella. An umbrella is advertised to keep you dry but there's no guarantee, especially if the wind and rain pick up. You're a hell of a lot more likely to stay dry than without it though.

The big difference is that a little moisture won't kill us, but even the tiniest leak can wreak havoc inside an electronic device.
Forum: Sold Items 07-06-2018, 01:42 AM  
For Sale - Sold: Sigma 28-300mm, f3.5-6.3 DG macro (full frame). Aperture mechanism not working
Posted By TheOneAndOnlyJH
Replies: 1
Views: 491
PM sent!
Forum: Pentax KP 07-03-2018, 12:45 PM  
Going from a biplane to a jet should I ?
Posted By TheOneAndOnlyJH
Replies: 9
Views: 735
I agree with Mikesbike on a bunch of those. (You don't have to buy any new lenses, but he's right about some old lenses showing their age on these newest 24MP cameras.)

The 18-135 is a great do-anything lens in good light, and it has the best auto focus performance of any of my lenses. The 55-300 PLM is a perfect compliment for a long range lens and is said to be the fastest focusing Pentax lens. (I only have the old 55-300)

For medium and low light I love my f/2.8 combo: Tamron 17-50 (Sigma when I need quiet focusing*) paired with the Pentax 50-135. I just used these over the weekend at a wedding and I love 'em. The output of the 50-135 is probably my favorite of all of my lenses.

For ultra low light, the cheap 50mm f/1.8 is great. That's the one I always pull out around the campfire, I just have to remember to step back. (My 35mm f/2.4 is a better field of view on APS-C, but f/1.8 is more useful when it's that dark.)


*Pentax 16-50 is a great lens too and has Weather Resistance (WR), but it's more expensive to begin with and is known for SDM issues so I passed. The Sigma 17-50 has quiet AF but sometimes overexposes unexpectedly in certain lighting. The Tamron 17-50 is my workhorse, but the screw drive AF can be distracting, which is why I kept the Sigma for when I need quiet AF. (I bought both used at very good prices.) They're all great lenses though, so pick the one that fits your style.
Forum: Pentax KP 07-03-2018, 09:01 AM  
Going from a biplane to a jet should I ?
Posted By TheOneAndOnlyJH
Replies: 9
Views: 735
One thing to know in advance is that 24mp images are quite a bit larger than what you're getting currently, so if you have a small hard drive you may fill it up quickly. Think around 10-15 MB per jpeg and 30MB for RAW. (45 MB if you shoot raw+jpeg, but that's a debate for another topic.) You can get a 2TB USB hard drive for $70 though, so that's an easy fix.

If you're processing raw files you'll find that the larger files will take longer to process as well, but if you make adjustments all at once and leave your computer to export overnight that shouldn't matter too much.

I'm sure you'll love the KP though. Definitely look at setting up custom user modes. My favorite thing is that after I've changed settings I can turn the camera off / on and have my favourite defaults reloaded instantly.

---------- Post added 07-03-18 at 11:21 AM ----------

Another note is that the higher resolution will SEEM to amplify flaws in lenses, technique, noise, and focus if you zoom in to 100% on your computer, so just be mindful of that.

When the K-3 first came out with 24MP some people thought the auto focus wasn't that good, etc. but it was just because the resolution allows you to zoom in further and see when something is slightly out of focus or blurry or noisy where before it was hidden by the lower resolution of earlier cameras. When viewed at intended magnification you should only see improvements with a KP.
Forum: Pentax KP 04-28-2018, 01:30 PM  
My 65 year photography journey ends with the KP !
Posted By TheOneAndOnlyJH
Replies: 46
Views: 6,568
Yeah, but with film you could upgrade to a 'newer sensor' just by changing a roll of film, and 'focus improvements' were developed by improving the photographer behind the camera. [emoji23] I think auto metering was a big jump initially, but today metering only improves incrementally.

Today you buy a new camera for improved high ISO, more resolution (megapickles[emoji39]), and AF performance. Unfortunately that means replacing the whole shebang, but at least the old lenses are still compatible!

That said, I'll drool over the K-1 and KP, but I'm still quite satisfied with my K-3. (At least for another year or two [emoji6])
Forum: Pentax KP 03-20-2018, 05:48 AM  
KP not recognizing SDM lenses
Posted By TheOneAndOnlyJH
Replies: 8
Views: 946
Did you go anywhere humid or shoot in the rain with your camera recently? My first K-3 had issues with my 18-135 DC auto focus after some Niagara Falls humidity got in. It worked after I dried it out but wouldn't focus if the battery was over 7.8 volts, so there was a minor short issue inside the body. Screw drive lenses worked fine. I didn't have any other DC or SDM lenses to try at the time, but the 18-135 works great on my current K-3.
Forum: Pentax KP 03-14-2018, 05:08 PM  
Can anyone help me calibrate my lenses with the KP
Posted By TheOneAndOnlyJH
Replies: 16
Views: 1,978
A good point worth highlighting. Some zoom lenses require different adjustment at different focal lengths and for different subject distances. Most lenses work decently all around if you adjust for the middle of the zoom range and at a normal subject distance, but some need extra attention. I have one lens in particular that requires extra adjustment when the subject is within three feet, so I just dial it in when I know I need it.
Forum: Pentax DSLR Discussion 03-13-2018, 06:09 AM  
Are we really THAT rare?
Posted By TheOneAndOnlyJH
Replies: 5,529
Views: 713,717
Must've been a really big dog! [emoji16]
Forum: Pentax KP 03-13-2018, 06:03 AM  
Can anyone help me calibrate my lenses with the KP
Posted By TheOneAndOnlyJH
Replies: 16
Views: 1,978
Just to clarify, fine focus adjustment only applies to the phase detect focus module which is separate from the image sensor. It doesn't affect contrast detect focus, so it doesn't affect live view focusing. Live view focusing uses the image sensor, so if there is enough detail on the subject it should be accurate.

A quick test to see if you even need to adjust af for a lens is to take a few shots on a tripod with the viewfinder and then a few in Live View. (Use two second delay to avoid camera shake, and ISO 100 with the appropriate shutter speed so you get the clearest detail.) If they're basically the same you don't need to adjust anything. If the live view ones are obviously better you probably need fine AF adjustment.
Forum: Pentax KP 03-12-2018, 04:46 PM  
Can anyone help me calibrate my lenses with the KP
Posted By TheOneAndOnlyJH
Replies: 16
Views: 1,978
Technically yes, but many are off so little you wouldn't know if you didn't look for it. Sometimes you have to pixel peep to see it too. It makes the most difference with wide aperture lenses that have narrow depth of focus, or with very large prints.

If you'd never heard of fine adjustment you might never even realize a lens is slightly off. If it isn't bothering you you don't need to adjust anything. Some of us just like to be as accurate as possible.

---------- Post added 03-12-18 at 06:48 PM ----------

Think of it this way... Do you need your ruler to be accurate to 1/64 inch or are you happy with 1/16 inch? Different strokes for different folks!
Forum: Pentax KP 03-12-2018, 04:23 PM  
Can anyone help me calibrate my lenses with the KP
Posted By TheOneAndOnlyJH
Replies: 16
Views: 1,978
If you search there are plenty of other threads that go into detail in methods for how to perfectly fine tune your lens, but basically it's because light travels two different paths to get to the sensor and the AF module. If there is a slight misalignment the paths will be different lengths and cause focus error. The fine adjust setting allows you to input an adjustment factor to correct this, either per lens or for all lenses. If your camera and lens are perfect examples you would just leave it at zero, but most tend to be just slightly off, and at 24MP it's easier to notice missed focus. Positive adjustment brings the plane of focus towards the camera, negative adjusts the plane is focus farther away.

Here's a good place to get started learning how to adjust your lenses
https://www.pentaxforums.com/reviews/lens-align-front-back-focus/the-remedy.html

If you don't want to spend money on a focus chart you can try building your own. There are other methods too, so search around the forum a little if you're interested.

---------- Post added 03-12-18 at 06:30 PM ----------

Another thing to mention is you shouldn't base your decision on only one shot since there's always some variability. Take multiple pictures and un-focus between each one to give the AF system another chance.
Forum: Pentax DSLR Discussion 02-27-2018, 02:25 PM  
Acceleration Chip (K1mkII, KP and K70) - What's the Difference
Posted By TheOneAndOnlyJH
Replies: 45
Views: 4,680
Call me silly, but that was my favorite line in your post. :lol:



If it's before the A/D converter it can make a big difference where in the pipeline it's located,* but based on ISO invariance displayed by most Pentax sensors I believe the A/D converter is already on chip (so before the Image Accelerator). It also seems like the image accelerator works magic on JPG processing but not on RAW files. (At least, that's the impression I get from the KP review since they don't show any examples of processed RAW's being better than the K-3 processed RAW's.)

I would say that the main advantage is improved JPEG processing in camera. It reminds me of computers and graphics cards. Sure, some games can be played with the main CPU processing the graphics, but at limited resolution and frame rate. Pass that processing off to a dedicated graphics card instead and you can increase resolution and frame rate substantially while letting the CPU focus on opponent AI, etc. The new image accelerator seems to do the same thing for the camera. Perhaps by offloading some JPEG processing the Prime IV engine might even be able to dedicate more processing power to the auto focus algorithms. (Just thinking out loud here, don't quote me on that!)

*Similar to using an amplifier for a TV antenna 50 ft away from the TV. Putting the amplifier right after the antenna will give the best signal. If you put the amplifier at the TV instead it will have less original signal to work with due to wire resistance, as well as also amplifying any noise generated in the 50 ft of cable.

---------- Post added 02-27-18 at 04:29 PM ----------

While I have a K-3, I don't have a KP (unfortunately!:lol:). If someone has both it would be interesting to get their thoughts on processed low light RAW files from the KP vs the K-3. I wouldn't be surprised if the KP is somewhat better just from sensor improvements over time, but if the Image Accelerator is doing it's magic on RAW files then you should see large improvements similar to those shown on JPEG's in the review. (And if it doesn't, I'll feel better about not having a KP yet.:o)
Forum: Pentax KP 02-21-2018, 09:20 AM  
Showstopper level issue with star trail stacking
Posted By TheOneAndOnlyJH
Replies: 7
Views: 940
When you say it fires faster at shorter shutter speeds, have you tried 25s? I know its might not be ideal, but that doesn't seem like that much of a tradeoff if you're stacking later anyway.

I'm don't have a KP or I'd try it myself, but is there any difference in delay between 5s or 25s exposures? If there is it might suggest some background processing involved that relates to exposure time. If there is no difference at any speed other than 30s I would guess it's a software glitch or designed delay. It might be to let the sensor cool slightly and completely discharge before each exposure since 30s is the longest exposure available and implies people want the most sensitivity the sensor can get.
Forum: Pentax KP 02-08-2018, 05:55 PM  
Using KP: Raw vs JPG?
Posted By TheOneAndOnlyJH
Replies: 34
Views: 3,948
If you're happy with the jpeg output straight from the camera, you don't lose anything. The 14-bit advantage only really matters of you want to adjust the picture after the fact.
Forum: Pentax DSLR Discussion 02-08-2018, 09:25 AM  
Are we really THAT rare?
Posted By TheOneAndOnlyJH
Replies: 5,529
Views: 713,717
You forgot twist! Then you can have the best of both on one cone! [emoji16]
Forum: Pentax DSLR Discussion 02-08-2018, 05:47 AM  
Are we really THAT rare?
Posted By TheOneAndOnlyJH
Replies: 5,529
Views: 713,717
Those savings would exhaust my 'wish list' and move on to my 'only dreaming' list. Hello, three ladies! (31mm, 43mm, 77mm) I could even throw in a K-1, but then I'd have to spend more on hard drives. [emoji16]

Though in all honesty I'd spend the savings on home improvements and other things first. [emoji849]
Forum: Pentax KP 02-08-2018, 05:41 AM  
Using KP: Raw vs JPG?
Posted By TheOneAndOnlyJH
Replies: 34
Views: 3,948
I'll just add to what others have said.

Color, sharpness, etc. are applied and permanently 'baked in' with jpeg. When shooting raw, the settings don't impact the actual raw sensor data but they are recorded in the raw file. Most software will use those as a starting point when you first open the image. (for example, if your white balance was wrong it would look wrong in Lightroom at first, but be easy to fix.)

Highlight protection works by underexposing 1 stop and brightening the jpeg, so all the raw images taken with it enabled would need a 1 stop increase to reach 'correct' exposure ('correct' as decided by the camera's meter).

If you have a large enough memory card you can just shoot RAW +JPEG. If you're happy with the jpegs just delete the raw files when you get home, but you'll have the raw for post processing in case things don't come out quite right.

I'd also suggest trying the Natural color setting. On my K-3 Natural gives colors closest to what I've remember in person. (Bright overemphasized red/orange to much for my taste, especially in wood tones.)
Forum: Pentax DSLR Discussion 02-04-2018, 09:18 AM  
Are we really THAT rare?
Posted By TheOneAndOnlyJH
Replies: 5,529
Views: 713,717
The smart phone fad will only 'pass' when we can do it all with something better.

I'm thinking electronic contact lenses with built in high definition displays controlled by hand gestures, and off course an integrated camera that shoots exactly what you see. Add in wireless earbuds (impants?) for phone calls and music and nobody would want a clunky old fashioned cell phone anymore. 🤣
Forum: Pentax KP 02-02-2018, 12:18 PM  
Shutter Release failed in cold weather
Posted By TheOneAndOnlyJH
Replies: 26
Views: 1,663
I just want to clear up a point here. Was the battery grip with battery attached to your camera the whole time, or did you attach it to the camera after the built in shutter button stopped working?

People have mentioned it might be a battery related issue, but if you had the grip on the whole time then cold batteries can be ruled out. It would also be mean that both shutter buttons saw the same temperatures, so it would indicate that maybe the grip's button is a little bit more cold proof.

Either way, from what I've seen it looks like you've probably snapped some real cool pictures. [emoji23] (pun intended!)
Forum: Photographic Technique 01-26-2018, 02:35 PM  
Action Best lens for firefighting shots
Posted By TheOneAndOnlyJH
Replies: 12
Views: 1,265
Depends on how close you need to get to the action. (ie: will you be a bystander hanging back, or geared up at the front lines?) I would definitely go for weather resistant lenses if I were you. I'd be worried about spray from the hoses blowing onto the camera, and also maybe smoke or soot. The Pentax 16-50 f/2.8 and 50-135 f/2.8 are both dust resistant as well as weather resistant. The DA 18-135 is weather resistant, though not specifically dust resistant.

If you'll be covering fires at night, definitely consider the f/2.8 lenses since you'll need the additional light to keep your shutter speed up and avoid blur. The 50-135 would allow you to get a decent overview from further back while letting you zoom in for shots showcasing individual firefighters. If your goal is to focus only on the overall fire (like a news reporter) you would be better with the 16-50 so you can fit it all in the frame. If budget is a concern look at the 18-135. It won't be as great in low light but the versatile zoom range is very useful, especially in an urban environment where you may not be able to back up so much.

You should also consider upgrading your camera instead. The K-3, K-70, KP all have much better high ISO performance than your K10D and even with your current lenses you'll see a large improvement in auto focus, resolution and low light performance. A new body paired with the 18-135 may even work out better than putting an f/2.8 lens on your K-10D.
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