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Forum: Pentax News and Rumors 1 Day Ago  
All three FA Limiteds to be updated + K-1 Mark II J-Limited 01
Posted By jatrax
Replies: 420
Views: 24,011
Yes please.........

Really tempted to preorder one of the 'new' limiteds. Those three have been on my list for a long time but I never pulled the trigger for some reason. But which to buy first?
Forum: General Photography 1 Day Ago  
How long can lenses safely survive in a dry box?
Posted By jatrax
Replies: 19
Views: 922
A "dry box" can mean two different things. Either an active dehumidifier such as : amazon.com: Eirmai Digitally Controlled Dehumidifying Dry Cabinet Box 75 Liters?tag=pentaxforums-20&
Or just a sealed box like: amazon.com: Pelican 1120 Case With Foam (Orange): Camera & Photo?tag=pentaxforums-20&
The active type will dry out wet gear. The Pelican case type will keep things dry if they went in dry. But also keep things wet if they go in wet. Putting wet gear in a simple non-active dry box is a sure way to develop fungus unless you also put desiccant packets of some type in. If you often shoot in the wet an active "dry box" set at a humidity level below 50% will dry out your gear and is well worth the money. You can buy one or build one DIY for not much money.
Forum: General Photography 2 Days Ago  
How long can lenses safely survive in a dry box?
Posted By jatrax
Replies: 19
Views: 922
I have any number of Takumar lenses that were stored at room temperature and humidity for 30 years or so with no ill affects. The lenses that I have handled that developed fungus did so (IMHO) not because of storage but because they were put away wet. I cannot prove that but it does make some sense. A normal home environment, healthy to humans is dry enough that fungus does not develop on walls, floors etc. So it is not going to develop on lenses either. But if you get something wet, put it in a closed camera bag so the moisture cannot escape readily, then yes you get fungus.

So rule number one is to never, ever put your gear away damp or wet. Leave everything out on a counter in free air until it is completely dry. The use of a dry box or other mechanical drying system will certainly work also. And if you frequently are shooting out in the wet a dry box would be a good investment to dry your gear when you come in.

According to information published by the EPA mold growth can happen if relative humidity is 60% or above. They suggest keeping home humidity in the 30 to 50% range with 45% being ideal for human health. Too low can cause health issues as well.

So a dry box at 35% will certainly prevent fungus growth indefinitely but it could be set at 40 or 45% to achieve the same result.
Forum: Troubleshooting and Beginner Help 3 Days Ago  
Back-Focusing is it the camera or lens ?
Posted By jatrax
Replies: 11
Views: 557
Check that all the screws on the camera mount plate are tight.
Forum: Non-Pentax Cameras: Canon, Nikon, etc. 3 Days Ago  
Canon R1
Posted By jatrax
Replies: 17
Views: 466
Does the technology exist to record 85MP images at 21fps?

What is the pixel pitch for a 85MP FF sensor?

Those are the two things that stick out to me. 85MP seems to be MF size sensor territory not FF, and I honestly have no idea if current bus and cards to keep up to that.
Forum: Pentax K-S1 & K-S2 3 Days Ago  
New to k-s2. I'll put my questions here
Posted By jatrax
Replies: 18
Views: 396
Can't help on that. Is it addressed in the manual? Some cameras (if I remember right) had a setting that changed the behavior of the pop up flash. I haven't had a camera with a pop up in a long time so I'm no help.
Forum: Pentax K-S1 & K-S2 3 Days Ago  
New to k-s2. I'll put my questions here
Posted By jatrax
Replies: 18
Views: 396
Might help to say what file format you are saving in, jpg or DNG or? Not sure if the K-S2 does PEF or not but changing it to DNG might make things more compatible if you are shooting RAW.

No idea why the camera is saving the files as read only. Are you sure it is the camera and not the card set to read only?
Forum: Pentax K-S1 & K-S2 3 Days Ago  
Blue tint or just me
Posted By jatrax
Replies: 7
Views: 194
Blue window light coming from the left and warmer light from the right. You can adjust your white balance so the blue goes away but then the right side of the box will be yellowish. It is always difficult to get the white balance correct when you have mixed light sources.
Forum: Pentax K-30 & K-50 3 Days Ago  
K50 Problem
Posted By jatrax
Replies: 6
Views: 413
So the images are coming out black? Or very dark? That sounds like an aperture block issue.

Read here:
Dark exposure problems on K-30 or K-50? Discussion Thread - PentaxForums.com
Detection of aperture block/diaphragm-block failure/stuck solenoid K-30, K-50, K500 - PentaxForums.com

Manual solenoid replacement Pentax K30 / Discharge flash-condenser / Solenoid choice - PentaxForums.com

---------- Post added 03-04-21 at 08:36 AM ----------

I did the manual repair on a K-50 a year ago and it is still working just fine. Parts cost $30 but I did have all of the tools needed. The project took about a hour and I do not consider myself all that capable in this area. It was the first time I ever took apart a camera. The instructions in the link are very well done.
Forum: Pentax K-3 6 Days Ago  
Sigma 50-500 4-6.3 APO DG won't work with K3
Posted By jatrax
Replies: 5
Views: 424
Flashing F means the camera cannot detect a lens. That is either because the lens is fully manual, is an "A" type lens but not in the "A" position or the contacts are dirty.

Verify that the lens is in the "A" position, if that does not help try cleaning the contacts on both lens and camera. Usually buffing with a microfiber cloth is enough, but alcohol can be used sparingly if absolutely needed.
Forum: Welcomes and Introductions 6 Days Ago  
HOW to WINS rest
Posted By jatrax
Replies: 4
Views: 296
Hi Atbany, here is the link to the manual: Aficio MP 301SP/301SPF download page

You will need to determine the IP segment your PC is using and change the fixed IP address of the printer to something within that segment. Unless you have a router that is giving out DHCP addresses in which case I think (but not sure) you can just set the printer to use DHCP. Or you can check your DHCP server and see if there are reserved addresses in which case you can use one of those to set a fixed address in the printer that will not be used by the DHCP server.

I do not know how you would set the address on the printer, that will be in the manual.
Forum: Pentax K-1 6 Days Ago  
Pentax K-1 reputation for "bulky and heavy" - is it deserved vs. competing cameras?
Posted By jatrax
Replies: 48
Views: 2,253
+1 on that. Before the K-1 I had a Canon FF body in my shopping cart at Costco. But after handling it again and again at the store I put it back because it felt like a plastic toy compared to the K-3 I had then.

I don't read much in the way of reviews so I cannot help with that. The K-1 is 'dense' to be sure, but it feels solid, well built and professional. I shoot with the K-3II and K-1II and despite the K-1II technically weighing more I can use the K-1II much longer than the K-3II because the grip fits so well. My wrist tires faster with the K-3II because (for my hand) the grip is not quite tall enough. I can run and gun with the K-1II for hours.

As to how "bulky and heavy" it is? Well Pentax says its a "field camera" so bulky and heavy on top of a tripod doesn't matter IMHO.
Forum: Troubleshooting and Beginner Help 02-28-2021, 06:56 PM  
K-x displays "command: 00 hex" on startup
Posted By jatrax
Replies: 24
Views: 908
I thought there was a button sequence to do that but checking the manual and the forum it appears that the reset is a menu item. Which doesn't help if you cannot get to the menu.

If you are getting 'low battery' with fresh batteries you might check the battery contacts in the camera. Cameras that old often have a bit of tarnish on them which prevents full voltage. And the k-x was notoriously finicky about batteries. I suspect it was marginal for use with AA batteries and any drop in voltage caused various unexplained issues. At the time the accepted wisdom was that Eneloop rechargeable ones worked the best as they had a 'flatter' voltage loss curve under use.

Anyway try cleaning the battery contacts. A pencil eraser can work or electronic contact cleaner if the pencil doesn't help. Not sure if that will help with your main problem but if the camera is not getting full voltage its hard to say what that might cause.
Forum: Troubleshooting and Beginner Help 02-28-2021, 02:48 PM  
K-x displays "command: 00 hex" on startup
Posted By jatrax
Replies: 24
Views: 908
Those sound more like low level error messages than anything I have ever seen on a Pentax camera. Certainly not something normal.
You might try a full factory reset but otherwise that doesn't sound good.

Also be aware the k-x maxes out at I think 32gb on sd cards so make sure yours is smaller than that. I do not remember if the firmware changed the capacity at some point so its possible the max card size is even smaller if it has earlier firmware. Latest firmware is 1.03
Manual is here: http://www.pentax.jp/english/support/man-pdf/k-x.pdf
Forum: Pentax K-70 02-27-2021, 12:48 PM  
?#1 k-70 aperture block, which repair service?
Posted By jatrax
Replies: 10
Views: 415
I am old and shakey and never opened a camera before. Took me an hour to very slowly and carefully do the job on a K-50 and put it back together. It has worked flawlessly since.
If your K-70 is under warranty then by all means send it to precision, but if not seriously consider the DIY solution using the incredibly detailed instructions available. Doing so insures you will actually get a good solenoid instead of a replacement part that is the same as the one that already failed.
Cost $30 in parts, I already had all needed tools.
Forum: Pentax News and Rumors 02-23-2021, 11:26 AM  
All three FA Limiteds to be updated + K-1 Mark II J-Limited 01
Posted By jatrax
Replies: 420
Views: 24,011
Some do. Some don't. Personally I think there are a lot of other things Ricoh should be doing rather than re-developing the 31, 43 and 77. if they can only develop 1 or 2 new lenses per year the FA Limiteds are very, very far down on my list to work on. By updating the coatings (and whatever else they worked on) with these versions they push the need for full new lens development slots for these down the road maybe 5 years at least. Which means they can continue to sell three highly praised lenses without taking up a valuable development time slot.
My guess is that the actual replacements for these will be the same design as the DFA 21mm (DC WR and no aperture ring). So we might eventually get 21, 31, 43, 77, 105 Limiteds. But that is 5 to 10 years away at the current pace of development. Ricoh has a lot of other lenses that need development time before they get to all of those.
Forum: Pentax SLR Lens Discussion 02-23-2021, 09:09 AM  
Crazy?? DA 21 (SMC) vs HD 18-50mm for very small walk-around lens
Posted By jatrax
Replies: 81
Views: 2,960
You are not crazy. Even if the image quality of the DA 21 is slightly better than the 18-50, the convenience of the zoom for your intended purpose over rides that. And I am not convinced that you could tell the difference in image quality in real world conditions.

I know this is heretical but the difference between zooms and primes is not so great any more. Back in film days when zooms first came out they were clearly not as good as a good prime. That really is no longer the case unless you are going to carry something like the DFA*50 or DFA*85.


The DA Limiteds are all great, fun, little lenses with excellent image quality. But they are not some magical device that transforms things into wonderful images. I had a full set of DA Limiteds and sold them on because I never used them, preferring the zooms. For what you are asking about as a use case a small light zoom like the DA 18-50 is perfect.
Forum: Pentax News and Rumors 02-22-2021, 09:59 AM  
All three FA Limiteds to be updated + K-1 Mark II J-Limited 01
Posted By jatrax
Replies: 420
Views: 24,011
Actually there are new products: DFA*50, and DFA*85, and DFA 21 and K-3II coming.

And regardless of new products or old the only thing that matters is that Ricoh has kept K-mount alive. I assume they finally sold down FA Limited stock to the point they needed to build more, so instead of just running a new batch they took the time to update coatings and aperture blades. Not something they would do if they did not think there was a future in K-mount. K-1II limited is also very good news, historically the "limited edition" models have come out at the end of the run for a body. Possibly signifying end of production and using up whatever final stock of parts they want to move. Good indications there is a new FF body in the works, though not likely before 2022.

Pace of new products seems to frustrate some but that is the reality in this day of declining volume. With Pentax's market share I think they are doing an excellent job of pacing development with income and staying in business instead of going under. Other brands are churning out a lot of new products which means a huge investment in development cost and inventory. It is exciting to see "new stuff" but very little of that "new stuff" would make any significant difference to the quality of images I produce.
Forum: General Photography 02-20-2021, 03:58 PM  
Multiple dents in SMC-A 24-50/4 filter thread repaired
Posted By jatrax
Replies: 16
Views: 597
I was expecting a thread on "how can I fix my poor lens". Wow, was I surprised. That lens looks like it dropped off the back of a truck and bounced down the road 30mph.

And now it looks remarkably good. Thanks for posting this.

Do you have a source for that tool? I'm not in need at the moment but you never know..............
Forum: Pentax K-30 & K-50 02-20-2021, 12:15 PM  
Best wide angle lens for K-30
Posted By jatrax
Replies: 16
Views: 636
"Best" would arguably be the DA*11-18. At least Ricoh thinks so since they put a '*' in the name................ It even has a groove to connect a heater for cold night shooting as well as a focus clamp, also useful for astro shooting..

This link might be helpful: Lonely Speck’s Ultimate List of Best Astrophotography Lenses – Lonely Speck A little dated perhaps but still valid information.
Forum: Pentax SLR Lens Discussion 02-19-2021, 01:12 PM  
18-55mm lens not working on my K50 but does work on my ist DS(older one)
Posted By jatrax
Replies: 8
Views: 536
Which macro lens are you using?

I hope not but you may be experiencing aperture block failure on the K-50.
Forum: General Photography 02-19-2021, 11:04 AM  
Cost to swap K-1II to Mirrorless
Posted By jatrax
Replies: 64
Views: 2,172
Here is what I have and what I used as a comparison. Admittedly the comparisons are not one to one. I don't currently have the DA*60-250 but I need to either re-buy one or buy the DFA 70-210 so I included it in the list.


DFA 15-30 - RF 15-35
DFA 24-70 - RF 24-70
DFA 28-105 - RF 24-105 f/4
DFA 150-450 - RF 100-500
DA*60-250 - RF 70-200 f/4
DFA 100 macro - RF 85mm macro
FA*85 - RF 85 f/1.2
FA 35 f/2 - RF 35 f/1.8
F 50 f/1.4 - RF 50 f/1.8

My primes are all vintage so replacing them with new RF glass might be a bit unfair. And some of the lenses (24-104 and 85) are faster. But that is the list of glass I use on a regular basis. So if I decided to change systems I would need to acquire that list though not necessarily all at once. It has taken me over 8 years to accumulate what I have so it looks really scary to see it priced out all at once.
Forum: General Photography 02-18-2021, 07:38 PM  
Cost to swap K-1II to Mirrorless
Posted By jatrax
Replies: 64
Views: 2,172
So I was bored today (raining) and idly browsing that internet thingy. I got to wondering what it would cost to swap out my Pentax K-1II system for a (very roughly) equivalent mirrorless system. This is just for fun, I've no intention of switching, just curious. And the lenses do not quite line up one to one anyway. I used the Canon R5 as the closest to the K-1II. I'm not sure that is right camera to compare but its what I used. And I selected RF lenses that were as close to my modern Pentax ones as I could get. Some were "better" / "faster" some were slower, some just different.

Total to get me roughly to the system I have in the bag now? $17,200 before tax. And that doesn't count the dozens of vintage K-mount lenses I have that I use occasionally. Just the modern ones I use all the time.

I'm not trying to say anything in particular. You could use EF lenses and the adapter and get a lower number. Or try a different brand or camera model. It doesn't really matter. I guess the only point is that jumping ship (if you are heavily invested in any system) is very expensive.
Forum: Pentax SLR Lens Discussion 02-17-2021, 03:00 PM  
Buying the DA* 60-250 Used
Posted By jatrax
Replies: 30
Views: 1,179
I believe the cost of repair was $330 plus tax but its been a few years.

I never got the 70-210. @Bdery did his review and it seemed about a draw with the 60-250 even on FF. So I am stuck being indecisive. If I was APS-C only I would get the 60-250 and never even think about it. I think I am waiting for the mythical 80-350 f/4............. But summer is coming and I have nothing long except the F 70-210, so sooner or later I will have to decide.

This is an excellent suggestion. I would not be concerned at all buying a used 60-250 if I could be sure it was from the Ricoh era, not Hoya.
Forum: Pentax K-1 02-17-2021, 12:14 PM  
Should I get the 28-105 kit lens for the K-1 Mark II?
Posted By jatrax
Replies: 42
Views: 1,472
DFA 15-30 f/2.8. It's big, expensive and hard to use filters with. And takes simply amazing images. It is probably on my K-1II 50% of the time. Which I would never have believed before buying it. It has opened up whole new areas of photography for me.

I've never used that lens but by all reports it works fine. Maybe a slight vignette, but no worse than other lenses. Since you already have it I would definitely try it on the K-1 before considering getting a different 50mm. There are a lot of really good, fast 50mm lenses out there. DFA*50 f/1.4 is the leader of the pack, but FA and F series 50's are also available quite reasonably.
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