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Forum: Digital Processing, Software, and Printing 03-18-2024, 07:30 AM  
Reminder: Keep your software up-to-date
Posted By CarlosU
Replies: 8
Views: 1,030
Thanks !!
Forum: Digital Processing, Software, and Printing 03-17-2024, 06:18 PM  
Reminder: Keep your software up-to-date
Posted By CarlosU
Replies: 8
Views: 1,030
I'm also a FastStone user and have always thought how convenient it would be to manage RAW + JPG files in conjunction
Can you explain how this "pairing option" is implemented? I haven't found anything within the program settings
Forum: Pentax K-3 & K-3 II 03-09-2024, 09:20 PM  
Weird experience using timer
Posted By CarlosU
Replies: 5
Views: 457
Light entering through the viewfinder when shooting with the timer (no face to block the light getting in) can affect auto exposure. Use the finder cap that came with the camera or some other form of cap to block light getting in.
Forum: Troubleshooting and Beginner Help 03-07-2024, 01:09 PM  
Stacking 2 pentax 1.4x teleconverters
Posted By CarlosU
Replies: 18
Views: 708
I think you are better off buying a used 2X teleconverter.
Forum: Flashes, Lighting, and Studio 10-16-2023, 02:00 PM  
Godox TT600 Diffuser?
Posted By CarlosU
Replies: 6
Views: 767
Take a look at this one Godox ML-CS1625
Forum: Pentax SLR Lens Discussion 09-18-2023, 09:24 AM  
SMC Pentax-FA 50mm F2.8 Macro Lens
Posted By CarlosU
Replies: 6
Views: 942
I have the FA 100 2.8 macro who has the same clamp nob. On this lens the nob don't lock the focus completely, it just add friction to the focusing ring so it is less prone to change focus inadvertently. Also gives a better, more precise feel when manual focusing. Don't know if it behaves in the same way with the 50mm.
It should not be used in AF mode because of the added resistance to the AF motor.
Forum: Product Suggestions and Feedback 07-06-2023, 12:24 PM  
Pentax touch-up pens...
Posted By CarlosU
Replies: 16
Views: 1,128
I have used Flat Black TESTORS enamel paint markers to touch-up silver shine scratches inside metal lens hoods, extension tubes and other parts that require flat black patches. The markers are easy and precise to use. They offer various colors and I think there is a metallic silver.
Forum: Pentax Camera and Field Accessories 06-16-2023, 07:13 PM  
Bag for small prime lenses
Posted By CarlosU
Replies: 25
Views: 1,487
I've seen cases made for bluetooth speakers (the ones with cylindrical shape) that look like a good fit for a set of small primes. They came in different sizes so it would be a matter of choosing the right size for your set of primes. You can use foam discs as separation between the lenses.
Many to choose from and much less expensive than dedicated photo cases.

Just as a reference:


amazon.com: LTGEM Case for JBL Flip 6, JBL Flip 5 Flip 4 Speaker. Fits USB Cable and Accessories. : Electronics?tag=pentaxforums-20&
Forum: Flashes, Lighting, and Studio 03-20-2023, 01:14 PM  
Wireless flash
Posted By CarlosU
Replies: 12
Views: 723
You can use the built-in flash on the K-3 to control the 540 wirelessly with full P-TTL automation. You cannot do the same with the K-1 since the camera doesn't have a built-in flash.
With the K-1 you can use a second Pentax flash with wireless control capability (360 and 540, both I and II versions) to control your 540 off camera.

The Pentax wireless flash control uses an optical path so the camera and the remote flash need to be in sight of each other. Radio triggered flash systems don't need camera an remote flash to be in direct sight.

P.D.: Sorry for the redundancy, didn't saw Peter's answer
Forum: Pentax SLR Lens Discussion 11-17-2022, 01:13 PM  
Can an SMC turn into “HD” with a Hoya filter?
Posted By CarlosU
Replies: 22
Views: 1,038
AFAIK the reason for coating a lens is to increase light transmission through the glass as much as posible, avoiding light reflection on the lens surfaces.
So the ideal situation would be 100% light transmission or 0% reflection, what a "perfect coated" filter would do. And that is exactly what you have in front of the lens without any filter.
In other words, the filter with the best posible coating can only be as good as having no filter (100% transmission, 0% reflection).
Once the light gets in to the first element and pass through the rest of the lens, the lens own coating is what define how much light passes and how much is lost by reflection.
In conclusion, there is nothing a HD coated filter could do to increase light transmission through the lens. Even more, it surely decrease light transmission, at least by a tiny bit.
Forum: Pentax SLR Lens Discussion 08-29-2022, 03:59 PM  
Sigma 10-20mm F4-5.6 EX DC. More than one version?
Posted By CarlosU
Replies: 9
Views: 798
This seems to be the case, and it's in coherence with the first Pentax lens line without an aperture ring, the FA J lenses.
Forum: Pentax SLR Lens Discussion 08-28-2022, 04:44 PM  
Sigma 10-20mm F4-5.6 EX DC. More than one version?
Posted By CarlosU
Replies: 9
Views: 798
Weird, there is one used on sale in B&H and it has the J letter
Forum: Pentax SLR Lens Discussion 08-28-2022, 10:11 AM  
Sigma 10-20mm F4-5.6 EX DC. More than one version?
Posted By CarlosU
Replies: 9
Views: 798
Silly question but one that has bothered me for years.
I have a Sigma 10-20mm F4-5.6 EX DC which I bought new in 2009. The lens is labeled "EX DC" without any "J" letter on the body or in the original box.
But I have seen in many places what seems to be the same lens but labeled "EX DC J". Even in PF database the only Sigma 10-20 4-5.6 shown is labeled as "EX DC J"

Are there two different versions of the lens? What the "J" means?
Forum: Film SLRs and Compact Film Cameras 07-09-2022, 06:13 PM  
Got to try it for fun
Posted By CarlosU
Replies: 4
Views: 860
Pardon my digression. Does anyone have experience with this lens on the K1? How does it compare to the D FA 28-105?
Forum: Photographic Industry and Professionals 05-26-2022, 05:08 PM  
It's time to say goodbye?
Posted By CarlosU
Replies: 253
Views: 12,207
When DPR reviewed the Sony A1 on April they put in the "don't like" list the following:

"Users must manually select between human, animal or birds for Eye AF"

and I commented:

"The time will come when they don't like that the camera doesn't shot automatically when there is a good photo opportunity in front of it."

I have had eight Pentax cameras, from an ME Super in 1980 to a K3 II, my newest one. Not that I not welcomed every improvement on each new model but I always remember with special joy the days with my MX. I learned photography the most with that camera, and enjoyed a lot using it. I think it had much to do with the fact that I had to be involved in every step of the process, and since I always have done photography as a hobby, much of the fun came from the process itself.
It's commendable what todays technologies can do but, at least for the ones who enjoy the craft, how much are we losing from all this automation?
Forum: Pentax SLR Lens Discussion 04-27-2022, 07:58 PM  
Help identifying haze/fungus on internal element
Posted By CarlosU
Replies: 5
Views: 795
From my own experience, probably cement/balsam degradation between two joined elements. If this is the case, the problem is not on exposed to air surfaces but in between cemented elements.
Forum: Pentax DSLR Discussion 02-16-2022, 05:50 PM  
Pentax K-3 III design
Posted By CarlosU
Replies: 69
Views: 4,778
I can do that on my K5 and K3II but only going through a tedious process, and often having to repeat the process after some time.

With the Nikon D500 (and I think with the D5 too) the camera can do it automatically using CD AF as a correct parameter for the adjustment. With those cameras you get only a global correction but I think it shouldn't be difficult to save a correction value for each lens used.
Forum: Pentax DSLR Discussion 02-16-2022, 05:25 PM  
Pentax K-3 III design
Posted By CarlosU
Replies: 69
Views: 4,778
Auto AF Fine Adjustment a la Nikon D500 but, for each lens, not globally.

If they decide to stay DSLR, at least get rid of front and back focus. In my case the most frequent cause of blurry pictures.
Forum: Pentax SLR Lens Discussion 01-31-2022, 08:20 PM  
DA 16-45 F4 iris appears stopped down when wide open at 16mm
Posted By CarlosU
Replies: 18
Views: 897
I agree. It makes sense with the 16-45 and other constant aperture zooms. What I find weird is that it also happens with my FA 28-105 which is a variable aperture zoom.

Maybe my 28-105 has being defective since the beginning and I wrongly asume the "not completely open iris at 28" was by design?
Forum: Pentax SLR Lens Discussion 01-31-2022, 06:17 PM  
DA 16-45 F4 iris appears stopped down when wide open at 16mm
Posted By CarlosU
Replies: 18
Views: 897
As I said above, it happens with my SMC FA 28-105mm F4-5.6, which is a variable aperture zoom. Weird...
Forum: Pentax SLR Lens Discussion 01-31-2022, 05:37 PM  
DA 16-45 F4 iris appears stopped down when wide open at 16mm
Posted By CarlosU
Replies: 18
Views: 897
Exactly the same thing happens with my SMC-Pentax FA 28-105mm F4-5.6 since I bought it new in the 90s, the diaphragm never opens completely at 28 but do it as you zoom in.

I was worried back then but I never saw any effect on exposure so I forgot about it. Seems to be this way by design.
Forum: General Photography 12-15-2021, 06:52 AM  
AGE and GEAR!!!
Posted By CarlosU
Replies: 103
Views: 3,647
Starting in 1980 at 16:

1980 Pentax ME Super
Pentax M 50/1.7
Pentax AF 200SA

1982 Sigma 80-200mm F3.5-4

1984 Pentax MX
Pentax M 28/2.8

1988 Pentax P3n
Vivitar Series 1 28-105/2.8-3.8

1992 Pentax PZ-1
Pentax FA 28-105mm F4-5.6 PZ
Pentax FA 100-300mm F4.5-5.6 PZ
Pentax FA 100mm F2.8 Macro
Tokina ATX SD 400mm F5.6
Pentax AF330FTZ
Pentax K1000

1994 Kenko Teleplus SHQ 1.5x PZ AF

1997 Sigma AF 24mm f/2.8 Super Wide II

2003 Sony Cyber-shot DSC-F717

2005 Sony Cyber-shot DSC-H1

2007 Pentax K10D
Pentax DA 18-55mm F3.5-5.6 AL
Sigma AF 100-300mm f/4 EX DG APO

2008 Pentax AF360FGZ
Sigma 10-20mm F4-5.6 EX DC HSM

2012 Pentax K-5
Pentax DA 18-135mm F3.5-5.6ED AL [IF] DC WR

2015 Pentax K-3 II
HD Pentax DA 40mm F2.8 Limited

2017 Pentax AF201FG
Sony Cyber-shot DSC-RX100 III

2019 HD Pentax DA 21mm F3.2 AL Limited


Some things scape my memory, some don´t worth mention.
Some things got broken, some sold, some never used anymore.

Even at todays state of things, it's hard for me to leave Pentax....
Forum: Film SLRs and Compact Film Cameras 12-08-2021, 11:38 AM  
Problem with Pentax LX Viewfinder
Posted By CarlosU
Replies: 25
Views: 2,091
I don't have an LX but I believe all the viewfinder options for the camera slide from back to front of the camera through groves on each side.
Maybe yours hasn't got all the way to the front, just enough to make difficult to see the aperture number?

Try releasing the prism with the little lever provided for it. Slide a little to the back, and then all the way to the front, making sure it goes all the way in. See if this helps.
Forum: General Photography 11-01-2021, 06:53 PM  
Can anyone tell me what this is?
Posted By CarlosU
Replies: 15
Views: 1,303
From the Marquis de Sade belongings?
Forum: Film SLRs and Compact Film Cameras 10-13-2021, 10:07 PM  
Super A love and hate
Posted By CarlosU
Replies: 20
Views: 1,317
If my memory don't fail, I remember my 1980 ME Super had a backup mechanical shutter of 1/125 that works without batteries. My first Pentax. Last time I had it in my hands was more than 30 years ago.
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