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Forum: Non-Pentax Cameras: Canon, Nikon, etc. 02-16-2019, 04:08 PM  
Canon Full Frame Mirrorless $1,299
Posted By madbrain
Replies: 129
Views: 4,082
What did you find underwhelming about it ? I don't see the bit rates.
It does 4K video, and more. The 30 minute limit is present though, which is a PITA.

One thing I found odd is that it only goes to 40,000 ISO in standard mode, 102,400 extended. While I would probably never use that high of an ISO, I have done great shot at 25,600 ISO on my K-1 II. I have had very poor noise results on my old Canon T3i .
The relatively low range for current camera generations tells me they might still have noise issues. Or maybe they are just being conservative.



250 shot is likely because of the screen having to be on all the time on mirrorless.

Agree the USB 2 is useless nowadays. You won't be using it to transfer RAW files, much less your 4K video files. They are just checking a box for their specs most likely. But they may as well remove it, if they are not going to upgrade it to 3.0 or 3.1 IMO.
One useful thing they could do would be to add 802.11ac wireless support. It probably won't come in their entry-level full-frame model, though, if it ever does.
Forum: Repairs and Warranty Service 02-06-2019, 02:03 PM  
My K1 shell is cracked. Will Precision Camera replace that?
Posted By madbrain
Replies: 18
Views: 1,219
I had damage on my K-1 II shell as well, but more minor. The quote for replacement was a total of $439.04 :
Labor : $200.21
Parts : $193.84
Shipping : $45

I didn't have the work performed in my case. The quote was purposes of getting my insurance to pay for the damage. I was without the camera for over a month.
Forum: Pentax Price Watch 12-18-2018, 03:28 AM  
Western Digital 12 Days of Deals
Posted By madbrain
Replies: 18
Views: 1,022
Brands I have used that failed : Western Digital, Maxtor, Seagate, Quantum, Micropolis, Conner, CDC, MiniScribe, Hitachi, Samsung.

When I used to run a BBS in my teens, I had a 100% failure rate on all hard drives. It was only a matter of time until they would fail. Didn't matter the brand, or the controller type. MFM, IDE, SCSI, Fast SCSI, Ultrawide SCSI. Some would fail at 2 years, some 4, some more than that. The capacities weren't growing as fast as they have been lately.
My first PC had a 20MB HDD in 1987. This Sunday, I picked up five 10TB HDDs for $189 each at Best Buy. Have yet to build the NAS, though. Not done with the full surface test on all of them.
Forum: Video and Pentax HDSLRs 11-19-2018, 05:18 AM  
Pentax K-1 Video Quality - Dynamic Range/Matching with other cameras/Best Practices
Posted By madbrain
Replies: 24
Views: 2,364
OP in this thread was asking about picking up a K-1, he hadn't bought it yet.



4K is normal video these days on most cameras, including smartphones. I agree with you handheld footage is often hard to watch, especially without stabilizers.
But even on tripod, my K-1 II clearly was no match in video quality for the much cheaper Panasonic GX85. See my previous comparison at Mirrorless 4k video option for Pentax lenses - Page 6 - PentaxForums.com .
It was also no match for my Galaxy Note 8. So this is really about saving money - if one wants to do video, just skip the K-1 / K-1 II, and buy a cheaper m4/3 camera.



I mostly bought the K-1 II for stills. I didn't expect any miracles from it in terms of video. I am not a gifted enough musician and my recordings take a very long time to get decent footage, sometimes multiple hours. I record the audio separately . I just want to keep the camera and audio recording until I get what I think is a good take. I can't be thinking about the camera or audio recorder running past its recording limit . Even if the K-1 II had great 4K quality today, the 30 min recording limit would still make it problematic for me. The GX85 replaced my camcorder as it can record long enough (almost 2 hours in one uninterrupted 4K take on battery).
The main thing that really bugs me on the GX85 is the lack of IR remote control sensor or wired remote input port. Smartphone app remote is the only thing that works with it. The GH5 fixes that, but $1000 more is just too much for a missing 50 cent IR sensor part. It's not as compact, also.
Forum: Video and Pentax HDSLRs 11-18-2018, 06:16 PM  
Pentax K-1 Video Quality - Dynamic Range/Matching with other cameras/Best Practices
Posted By madbrain
Replies: 24
Views: 2,364
What is "normal" use ? Your own use case ?
With a lot of effort, you may be able to get acceptable results in some cases with the K-1 video, but it won't be easy. And in the vast majority of situations, it will under perform other cameras at much lower price points, including even smartphones. The op chose the GX80 as a B cam . They haven't chimed in a while. But IMO that should be their A cam for video. I own the nearly identical GX85 and it trounces the K-1 II for video in every way.
I wouldn't even consider the K-1 II as my B video cam. It would be my C video cam. The B cam would be my Galaxy Note 8 .
Forum: Video and Pentax HDSLRs 11-16-2018, 07:56 PM  
Pentax K-1 Video Quality - Dynamic Range/Matching with other cameras/Best Practices
Posted By madbrain
Replies: 24
Views: 2,364
I'd like to know as well. However, one thing that is clear is that the camera was on a tripod in every single case. This dramatically reduces the amount of difference between frames. Thus, the low bit rate of the Pentax doesn't show as badly. If the camera was hand-held, the quality of the footage would look dramatically different, IMO.
In fact, if you look carefully, none of the objects that are in motion (mostly vehicles) look sharp. That's partly because they are out of focus, and partly because of the low bit rate. For the most part, what's static and in focus looks good. Everything else is not.
Forum: Video and Pentax HDSLRs 11-14-2018, 10:34 PM  
DA* 300mm and Sony FS5 at 240fps
Posted By madbrain
Replies: 30
Views: 2,344
That's not overly practical if one a desktop PC needs to be nearby as the external recorder. I would hope for a recorder box. Maybe one that records to a hot pluggable SATA SSD instead of SD card.

I'm trying to move away from using a PC for audio recording so I can remove the snake cable between my home office and computer. And not need to turn on the PC when playing / recording.
Getting this bad boy tomorrow :
DA-3000 | OVERVIEW | TASCAM

Should fit in a rack underneath my grand piano, and completely silent. Though that will depend more on how well the rack is built and vibrations when playing the instrument than noise originating from the recording device itself.
PCs as external audio or video recorders could not completely be noise-free, IMO.
Forum: Video and Pentax HDSLRs 11-13-2018, 09:07 PM  
Pentax K-1 Video Quality - Dynamic Range/Matching with other cameras/Best Practices
Posted By madbrain
Replies: 24
Views: 2,364
FYI, here is a quick comparison I did in May of 5 cameras, including the Pentax K-30 and K-1 II :

Mirrorless 4k video option for Pentax lenses - Page 6 - PentaxForums.com

I will not bother shooting video with the K-1 II . GX85 all the way for me when it comes to video.
My K-1 II will be used mainly for stills. The video bit rate on the K-1 II is just too low, there is no 4K, and the 16 min recording limit is extremely impractical.
The full frame sensor is just wasted on video because of these limits.
Forum: Video and Pentax HDSLRs 11-13-2018, 08:57 PM  
EU recording time penalty coming to an end
Posted By madbrain
Replies: 10
Views: 1,066
Yes. However, smartphone manufacturers who are not in that business might. At that point, the camera mafucturers would look pretty silly.

I'll believe it when I see it, though.

---------- Post added 11-13-18 at 07:59 PM ----------



Not before :
a) some lawyers get paid to figure out if the new rule can be retroactively applied to existing devices that were imported, but for which no duties was paid at the time the rules were in force.
and
b) an incentive develops for manufacturers to issue such firmware updates. It will only cost them money to remove the limit, including lost new sales, if new devices no longer have the limit
Forum: Digital Processing, Software, and Printing 10-21-2018, 10:47 PM  
Printing at home - what's the real cost?
Posted By madbrain
Replies: 23
Views: 1,815
CISS on a Canon printer are a big no-no. You risk ruining the expensive print heads, which cost as much as the printer - often more, since the printers often have rebate deals, and the printer heads don't. Some people just buy a new printer when their print head fails ...

Re: Canon Pro-100 and CISS System?: Printers and Printing Forum: Digital Photography Review
Forum: Pentax Price Watch 10-18-2018, 12:54 AM  
2 Pack 128GB Lexar cards on sale
Posted By madbrain
Replies: 10
Views: 807
If it's really 5-10MB/s, you more than likely have a fake card. Where did you buy it from ?

---------- Post added 10-18-18 at 12:56 AM ----------



Third party vendors are not "backed by Wal-mart".
Forum: Troubleshooting and Beginner Help 10-09-2018, 04:32 PM  
Corrupted Raw Files Pentax K-1
Posted By madbrain
Replies: 21
Views: 935
Where did you buy those SD cards ? Are you sure they are genuine ? There are a lot of fake cards out there, that are actually 2 or 8GB cards masquerading as much larger cards.

HappyBison.com: tech, research and bison

Have you used and filled those cards in other device besides your K-1 before ? Fake cards will work fine until you exceed the real capacity. And then the files get corrupt.

If you have another unused SD card from the same batch, please run h2testw on the card.
Download H2testw 1.4
Forum: Video and Pentax HDSLRs 09-28-2018, 05:13 PM  
DA* 300mm and Sony FS5 at 240fps
Posted By madbrain
Replies: 30
Views: 2,344
Right, and the non-portable part doesn't really bother me. Not being able to quickly start recording with decent audio does. Having to go to the home office, stop every process on the PC, turn on the firewire interfaces and mic preamps, etc. And then of course the time afterwards to transfer and sync.



Not clear what the BMD Intensity would accomplish for me. The specs say it's only HD, also, while the GX85 internally already records at 4K / 100 Mbps.
Forum: Video and Pentax HDSLRs 09-25-2018, 08:47 PM  
DA* 300mm and Sony FS5 at 240fps
Posted By madbrain
Replies: 30
Views: 2,344
My external recorder is a pair of Firewire interfaces, Echo audiofire 8 and Audiofire 12 . Total of 20 XLR in :) Both connected to a desktop PC, running Reaper software.
I run a 12-channel XLR snake cable from the music room to the home office.
I have a bunch of mic preamps in the home office also. The one I use the most is an ART Pro audio MPA II tube preamp.
I used to record with more than 2 mics at a time, but eventually found which ones work best for piano or harpsichord, and the proper placement, and now I only record with 2 at a time.



Right.



Agree. But the phones still have a short recording limit, far shorter than my practice sessions. And since I'm an amateur, what I end up posting is always whatever the best footage is from long practice sessions. I only interrupt the recording manually if I have something I feel is worthwhile, so that I know to look at the end of that file. Otherwise, I can keep it going for 1hr+.



Have not looked at those models. I guess the price must have been way over my budget when they were new.
I have a K mount adapter to m4/3 for my GX85. I mostly use the Panasonic 12-32 lens pancake, though, as I need something wide due to recording harpsichord in the corner of the room.
I don't have any wide Pentax prime to mount . DA 35 is the widest prime I have. I do have the Sigma 10-20 APS-C in K mount.
I like the form factor of the GX85 very much. I dislike the touch screen, though. No IR sensor is a pain. I can use my phone as a remote, but it runs out of battery way sooner than the camera does. IR remote lithium battery lasts 5-10 years.
It's hard to justify spending $1500 extra on a GH5/GH5s for a 50 cent missing IR sensor part . Those do have audio inputs, though, but not XLR. Looks like there is a $400 DMW-XLR1 adapter to attach 2 XLR via hot shoe. Rather pricey, but I guess it's also a built-in stereo mic preamp and stereo A/D, so that explains the cost.
Still, wish there was also a plain XLR adapter since I have spare mic preamps. And it could go through the camera's built-in A/D in a pinch. Ideally the camera itself could feature dual mini XLR connectors It would remain compact that way. The mini XLR connectors only cost $3 each and could fit even on a GX85 if the manufacturer wanted to fit them on that chassis.



Sorry, not gonna happen. Baroque music only for me. And it takes me forever to learn stuff as an adult music student.
Forum: Pentax K-1 09-23-2018, 03:04 AM  
Does Pentax K-Mount DA 18-270mm work well with Pentax K-1 Mark II
Posted By madbrain
Replies: 11
Views: 1,022
Yes, it was long quest to find the right lens, though. See :

Full frame superzoom ? - Page 7 - PentaxForums.com

I settled on the Tamron A061P model, which is the last full-frame version Tamron of the Tamron in K mount, which was designed not for film but for digital. It was released over a decade ago, even though Pentax didn't have a full-frame camera at the time.
IQ is good. Focusing in low-light indoors is very slow. Acceptable in daylight. The optics are the same as their other mount versions for full-frame Canon DSLR at the time. The specific lens model was really hard to find. I ended up ordering it from Japan on Amazon. Looks like he has another one available still.

https://www.amazon.com/gp/offer-listing/B00067ILIA/ref=dp_olp_used_mbc?tag=p...condition=used

Looks like someone on Ebay has it for less now :
Tamron AF 28-300mm F3.5-6.3 XR LD IF Macro PENTAX K AF KAF From Japan N Mint F/S | eBay

There are other older versions like the A06 which are easier to come around, but not made for digital, and may not have the same coatings and produce some CA / PF, of which I see none on my A061P.

There are also even older Tamron of the 28-300 like the 185D, which I would recommend avoiding.
Forum: Video and Pentax HDSLRs 09-23-2018, 02:50 AM  
DA* 300mm and Sony FS5 at 240fps
Posted By madbrain
Replies: 30
Views: 2,344
Yes, I have got an external recorder. No mic input on the camera though, so has to be synchronized in post. Sometimes I would prefer to shoot a quick video with good sound and no editing, but it's not to be on this camera.
The AGC makes the built-in audio miserable.

Example during this practice session :















You Tube



Anyone who knows about harpsichord is aware that there are no dynamics. But the camera's AGC takes about 4 seconds to ramp up the volume, from quiet to normal level. I haven't found a way to turn off AGC.



My testing shows the sensor stabilization , even dual IBIS, to be very poor for stills compared to Pentax SRII on K-1 II. Can't do video comparison, but the Pentax doesn't have it, so this would be with dual IBIS turned on/off in the GX85 only. Since I use the GX85 on tripod only, it is fairly useless.



Panasonic and Sony do have camcorders. Unfortunately, very small sensors only. I tried a Sony FDR-AX33 a few years ago and returned it. Terrible indoor performance. IQ was awful, which I think is because it couldn't even AF properly in my music room at night. Even my 10 year old Canon camcorder could. No other camera has failed like that. The AX33 IQ was great for outdoors. I didn't have it in my to try the Panasonic camcorder offerings. The reviews online stated the IQ was worse than Sony, and Sony IQ wasn't good enough for me.
Forum: Pentax DSLR Discussion 09-16-2018, 03:04 PM  
Is there a single feature that would prompt you to upgrade?
Posted By madbrain
Replies: 29
Views: 1,210
It's a very small tax to begin with . Panasonic has chosen to make different versions for different markets. For example, the US version of the DC-GX85 can record nearly 2 hours i 4K at 100 Mbps. The video qualit yruns circles around my K-1 II, at 1/4th of the price.

---------- Post added 09-16-18 at 03:05 PM ----------



In a Pentax ? I wish, but I wouldn't hold my breath.
Forum: Digital Processing, Software, and Printing 08-09-2018, 07:05 PM  
Printing at home - what's the real cost?
Posted By madbrain
Replies: 23
Views: 1,815
I have both an Epson Workforce-7110 and a Canon Pixma Pro 100 . There is a massive difference in photo quality between the two. The former is not professional quality, while the later is.

I use Precision Color inks instead of Canon inks to save costs.
Forum: Pentax Price Watch 08-08-2018, 09:21 PM  
Is this too good be true? Pentax K-1 Mark II Full Frame Wi-Fi 4K HD DSLR Camera & FA
Posted By madbrain
Replies: 18
Views: 1,121
The K1 II is not a 4K camera.
Forum: Pentax SLR Lens Discussion 07-21-2018, 02:17 PM  
Full frame superzoom ?
Posted By madbrain
Replies: 106
Views: 4,688
Yes, the K-1 II is an excellent low-light camera. I have it setup on auto ISO 100-25600 usually.

Here is one more cat pic at ISO 25,600 with the Sigma 18-300 , APS-C shot. 220mm, 1/80, f8.

Forum: Pentax SLR Lens Discussion 07-21-2018, 01:56 AM  
Full frame superzoom ?
Posted By madbrain
Replies: 106
Views: 4,688
So, I just compared the Sigma 18-300 in APS-C and the Tamron 28-300 XR Di in FF. This time I shot the inside of the piano again.

Comparing the field of view, it is close (but not exactly the same) for the FF lens at 300mm and APS-C lens at 143mm. But obviously the FF lens offers much more resolution for the same field of view.

I get more center resolution with the 28-300 FF . At the longest focal length, the strings on the piano take up more pixels in the FF image at 300mm than the same strings in the Sigma APS-C image also at 300mm (450mm in FF equivalent).

I can't quite say which one is sharper as the focus is very critical and only part of the strings are in focus. The live view & manual focus helps with that, but it's not possible to get exactly the same section of strings to be in focus on both lenses. I would need to be shooting parallel to the strings, and I'm shooting at an angle.

I can't do it with my tripod, even with the pistol head. The camera can face straight down and is high enough, but doesn't extend into the piano - it can only shoot the floor this way. I would need an extension between the tripod head and camera. And I don't think I would trust it to hold the camera. Maybe cinematographers would know what kind of rig is suitable. I don't have it.

Anyway, the point is that the very old FF lens still provides more resolution when zooming close.

The focus speed difference is very major, however. The Tamron is very slow to focus in CDAF. The K-1 II ends up doing 2-3 revolutions of the focus ring before finding focus on the strings, and this can take >10s with the Tamron lens, and is quite noisy. With the Sigma lens, it still can take 2-3 revolutions, but it is much faster, and also almost completely silent. In PDAF (not in Live view), the AF speed is much more tolerable, and the difference isn't nearly as dramatic.

What remains dramatic is the sound of focusing. One of my cats certainly noticed when I was using the Tamron lens last night and autofocusing. Her ears did something funny :


My cats don't seem to mind the very slight noise of the Sigma lens as much.
Forum: Pentax SLR Lens Discussion 07-21-2018, 12:10 AM  
Full frame superzoom ?
Posted By madbrain
Replies: 106
Views: 4,688
I really meant 16,000 .
Forum: Pentax SLR Lens Discussion 07-20-2018, 01:20 AM  
Full frame superzoom ?
Posted By madbrain
Replies: 106
Views: 4,688
So I got the Tamron A061 28-300mm XR Di FF lens . Seems to be OK. I didn't do any exhaustive IQ comparison tests yet. Probably this weekend. It seems slightly slower to focus than the Sigma 18-300 APS-C.

Took a whole bunch of cat pics at night in borderline lighting conditions.

One of them was the following at 180mm, f/5.6, ISO 16000 .



Not all the picture were this sharp. It seems worse on wide end than tele end. But will have to conduct more tests.
Forum: Pentax SLR Lens Discussion 07-13-2018, 02:30 PM  
Full frame superzoom ?
Posted By madbrain
Replies: 106
Views: 4,688
Would be interesting to compare all these.
I haven't tried my A06 yet, still waiting for return label from the Amazon seller.
I ordered an A061 from Japan as I couldn't find it anywhere else. Will not have both on the same day to compare directly on tripod as I did before with other lenses.

Rain is not a major concern for me. I am rarely in those conditions. Would use the D-FA 28-105 if I was.
Forum: Pentax SLR Lens Discussion 07-11-2018, 10:26 PM  
Full frame superzoom ?
Posted By madbrain
Replies: 106
Views: 4,688
Received it today. Unfortunately, it's model A06, not A061 as it was advertised to be. A06 is the non-Di version, unfortunately. So, I'm sending it back. This is getting tedious as it's the 3rd FF K-Mount superzoom that I buy which is not as advertised. First one was defective, second one was a Canon mount, third one wrong model. Sigh.
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