Forgot Password
Pentax Camera Forums Home
 

Showing results 1 to 25 of 300 Search:
Forum: General Photography 5 Hours Ago  
Ansel Adams Exhibition
Posted By AggieDad
Replies: 14
Views: 787
Today I went to the Ansel Adams exhibit at the Crystal Bridges museum in Bentonville, Arkansas. It was thoroughly enjoyable.

Along with Adams' work there was the work of other photographers, from pre-Adams right through to our contemporaries. It was very instructive to compare and contrast the styles of these different artists.

If you can get to Bentonville, I heartily recommend seeing this exhibit.
Forum: General Photography 3 Days Ago  
As Photographic "Oases" Keep Disappearing, Are You Turning "Inward"?
Posted By AggieDad
Replies: 53
Views: 1,381
I think, unfortunately, we are all facing similar issues in these uncomfortable times as we head out to do our photography.

About a year ago I posted about how I have taken to wearing a yellow safety vest whenever I am using my camera. The vest – sort of like walking around a plant or office building with a clipboard – seems to make you "okay" or at least only semi-visible. It works for me. For a $5 or $10 investment, it might be worth a try for you.
Forum: General Photography 5 Days Ago  
Recommended YouTube Channels for Photography
Posted By AggieDad
Replies: 57
Views: 3,829
Rob,

I tried this YouTube show – it is very good. I have now binge-watched the series to bring myself fully up-to-date. Many thanks for pointing out this really fine show.

Don
Forum: General Photography 10-06-2020, 04:19 PM  
Ansel Adams Exhibition
Posted By AggieDad
Replies: 14
Views: 787
I just made my reservations. We'll stop on our way to St. Louis to visit our grandkids. I am very excited to see this.

Note: If you want to see this exhibit, due to the Covid-19, the museum is admitting on a scheduled basis. Check the museum website for the schedule and ticketing.
Forum: Pentax K-3 10-04-2020, 07:43 PM  
Quick Question About Bracketing
Posted By AggieDad
Replies: 8
Views: 531
Steve,

Thanks for following along with me. The skips happen right from the "get-go," so I knew it was not a buffer issue.

Anyway, we adjust and move on. Perhaps I can figure out a better method in my next pano design.
Forum: Pentax K-3 10-04-2020, 08:52 AM  
Quick Question About Bracketing
Posted By AggieDad
Replies: 8
Views: 531
Steve,

Thanks for your thoughts.

There should be plenty of time for shutter reset under any circumstances. I have programmed in about 7-1/2 seconds time per image. This includes the camera moving, settling time, shutter firing, etc. It should be more than enough time for the camera to be ready for another shot. The pano rig is agnostic as to what is happening with the camera; it simply is firing the shutter after x amount of time.

You are correct that everything was the same for all my trials. The only variable was viewfinder or live view mode. The camera was in M mode with a manual lens and set at ISO 100, and f/16 at 1/160 sec shutter speed. The bracketed shutter speeds were 1/125 and 1/250. My Slow Shutter Speed NR was set to automatic and really should not have been a factor. But this morning I tried it again with the SSSNR turned off and nothing changed.

My main reason for the original post was to know whether this was a normal issue or not. From your responses, I am going to guess this is simply my camera. It is not a problem as long as I remember to switch off the live view when i am ready to start the pano.

Don
Forum: Pentax K-3 10-03-2020, 07:32 PM  
Quick Question About Bracketing
Posted By AggieDad
Replies: 8
Views: 531
There was no pixel shift. The camera is set at f/16, ISO 100 and a relatively slow shutter.


The camera is set up for a single shutter press through the remote cable.



I am bracketing shutter time. I am using an old manual SMC Pentax-M 100mm F4 lens, so aperture is set on the lens.


The designed interval time is fine when there is no lag in the reset time. It is this extra-long lag time that caused the skip. When I changed from live view to viewfinder there was no problem with using exposure bracketing.


Then my camera is performing differently than yours. With live view I am experiencing approximately a 3 second lag between shutter presses. With the viewfinder it is just one after another. Ideas?

Many thanks for thoughts and ideas.

Don
Forum: Pentax Camera and Field Accessories 10-03-2020, 09:47 AM  
CS-205 and CS-310 cable release
Posted By AggieDad
Replies: 5
Views: 452
You are correct. It is not powered. It is simply a 3-wire cable and a two-stage switch in which the first stage engages for the auto-focus and the second stage fires the shutter. It will also have a slide on the switch for holding the shutter down (bulb mode).

You can pretty much buy any remote cable that has the same size jack as your camera. I bought a random third party (Pixel brand from Amazon $10.50) remote cable for my pano rig because all I needed was the cable with the jack. I bought two of them. I keep one in my camera bag and modified the other I modified for my pano rig.
Forum: Pentax K-3 10-03-2020, 08:55 AM  
Quick Question About Bracketing
Posted By AggieDad
Replies: 8
Views: 531
I was doing a panorama yesterday with my automated pano rig, and I set my K-3ii for bracketed exposures. When I started the pano I noticed that the shutter was only firing every other time it received a signal from the pano rig. Fiddling around, I switched from live view to the viewfinder and it solved my problem.

This morning I did some experimenting, and, sure enough, when the camera is set for live view there is a considerable reset time from one shutter firing sequence until the next. With the viewfinder, every shutter press will fire off the multiple images of the bracketing immediately after the previous. This occurs no matter how many images to the bracket (2, 3, or 5).

My questions: a) Is this typical behavior? b) If so, what causes this?

Many thanks,

Don
Forum: Do-It-Yourself 09-30-2020, 02:00 PM  
Automated Panoramas – with Rows!
Posted By AggieDad
Replies: 8
Views: 871
Big Mack,

My programming experience was limited to a short time in the early 1990s with Visual Basic (I'm just an old retired math teacher). Then I got involved with the Arduino microcontroller when I built an automated macro rail in 2017 when I was recuperating from lung surgery and couldn't be outside much. So the pano system is my second project. I started with stepper motors but learned they like a bit more power than a small battery pack can provide. So then I had to learn about servos.

Those membrane keypads are a great bargain. I must have a half-dozen of them. In fact, its amazing how many bits and pieces I have collected over the past few years. Trust me, I doubt if I saved any money building this project myself rather than just calling B&H. By the way, you might want to get an I2C board to use with the keypad so you don't end up using a lot of your Arduino pins.

It has been great fun on many levels. Being retired, I am trying to keep my brain from becoming Jello. It also extends my photography hobby. So it is a win-win for me. In fact, I could even talk with my neighbor's boy (a Python user) about some tech stuff without him saying, "Okay Boomer!" But then I am actually too old to be a boomer – I'm a war baby. :lol:
Forum: Do-It-Yourself 09-29-2020, 07:27 PM  
Automated Panoramas – with Rows!
Posted By AggieDad
Replies: 8
Views: 871
Sometime in mid-July I posted (here) Phase 1 of my automated panorama photography rig – a microcontroller-based motorized camera mount. It allows taking a series of images designed to be stitched together just by entering the focal length of the lens and the desired width (in degrees) of the final panorama.

Now I have completed Phase II – rows. With the addition of a second servo-motor and some additional code for the microcontroller, my system will now take multiple rows of photos to allow the panorama to be as tall as you might wish it to be.

With this rig, I enter the lens focal length, the desired width of the panorama, the number of rows of images, and whether or not the camera is in landscape or portrait attitude. The microcontroller then calculates the width and number of images per row and the row height. Then it moves the camera to a starting position and begins taking pictures while I enjoy a cooling beverage.

The big black box holds the electronics along with a keypad and an LCD display. I enter my info on the keypad and it displays on the LCD so I can confirm that I entered things correctly. The servos are heavy-duty with 9:1 reductions for plenty of torque – a K-1 with a 500 mm lens should be no problem. In fact, I plan to put my Sigma 150-500 on my K-3 during my next trial just for kicks. Everything runs off of 5 AA batteries (7.5 volts).

The photos show the unit set up on a boardwalk at a small nearby lake. the first two photos show a closeup of the display to give an idea of the prompts for entering setup data. Following are two photos of the unit on the tripod during a pano sequence. Finally there is an example of a panorama along with a small section to give an idea of the detail that shooting panos with a long lens can achieve.

The example shown here was shot during my first trial run of the new system. It is 75º wide and 3 rows high. The camera is in portrait attitude with an SMC Pentax-M 100mm f/4 lens. The final pano image is 45,255 px x 12468 px (printed at 300 dpi that’s 12 feet x 3½ feet!). On my 27” iMac a full screen the pano image displays at only 9% of its actual size.



Close-up showing the Whole Rig



One of the Opening Screens



Example of an Entry Prompt



A 3 Row Panorama (45,255 px x 12468 px) - Note the Red Box



Red Box from the Pano Above Showing Detail a Longer Lens Pano Allows
Forum: Photographic Technique 09-22-2020, 03:04 PM  
How to support a helmet for product photography?
Posted By AggieDad
Replies: 28
Views: 927
How about a simple adjustable height hat stand? You can clone out the post or not. See this.
Forum: Pentax News and Rumors 08-23-2020, 11:19 AM  
2020 Pentax Forums T-shirt Contest!
Posted By AggieDad
Replies: 55
Views: 5,920
T-Shirt Contest Time!

Ah! The time of my annual rejection. :(

This is my annual Charlie Brown kicking the football moment; my "Eddie the Eagle" soaring for England (if I were English) moment; it's my annual "bro-time" with good old Don Quixote when we go off to tilt at windmills together.

I design and design and design. I enter and enter and enter. And lo, I buy t-shirts created by others.

Of course I realize that regardless of the final results, my designs are the most creative and attractive. After all, I am a photographer. And just like all photographers, I understand that the judging is flawed when the ribbon isn't pinned on my work. ;)

When the flawed process of voters not having my particular sense of taste or style is complete, and all the votes are counted, I will, again, buy t-shirts designed by others. And I will wear them with great pleasure and pride.

Someday my design may be a winner. But do I care? Not really. I enjoy the challenge and the opportunity to try and be a little creative. And I take great delight in seeing all of the designs created by others. :D

Good luck everyone! I look forward to your creativity.

Don
Forum: Pentax News and Rumors 08-04-2020, 08:41 PM  
Meet the new flagship
Posted By AggieDad
Replies: 765
Views: 73,968
I am closing in on 78 and have been retired for quite a while. In other words, I have a bit of time on my hands, so “Pentax-speed“ auto-focusing can help fill the day when I am out shooting old gravestones at cemeteries. However, I must admit that the dead are much more cooperative than birds in flight (or the demands of those fast-moving folks at weddings). :)
Forum: Pentax DSLR Discussion 08-02-2020, 06:25 PM  
10 reasons I will not buy K new
Posted By AggieDad
Replies: 53
Views: 3,125
Does she know AggieMom?
Forum: Pentax DSLR Discussion 08-02-2020, 05:24 AM  
10 reasons I will not buy K new
Posted By AggieDad
Replies: 53
Views: 3,125
Lists. Schmits.

There is really only one consideration: Will I be able to loosen the purse strings enough to reach my hand in?

So if (or when) I buy the K-new is dependent on one - and only one - underlying factor: AggieMom.
Forum: General Photography 07-31-2020, 09:17 AM  
Happiness in selfie almost looks real
Posted By AggieDad
Replies: 11
Views: 1,049
Okay. I thank everyone for cluing me in.

While I was an early adopter with computers – back to the Apple //e with 128k floppies – I am a complete Luddite about social media and the world of texting and selfies.

I have heard of The Onion and I think I even looked at the site once or twice any number of years ago. If I remember correctly, it is sort of like an online version the old Mad Magazine. But I think I last read Mad in my freshman year of college which would have been 1960-61. So The Onion was not anywhere in my active mind.
Forum: General Photography 07-30-2020, 11:59 AM  
Happiness in selfie almost looks real
Posted By AggieDad
Replies: 11
Views: 1,049
I am confused. What does the title “ Happiness in selfie almost looks real” mean? What am I missing?

Golly, it’s terrible to be old.
Forum: Pentax DSLR Discussion 07-29-2020, 12:00 PM  
The Kingdom of DSLR
Posted By AggieDad
Replies: 51
Views: 3,026
13. Because I am closing in on 78, and it is no worse than an even bet that I am gone before Pentax. :)

---------- Post added 07-29-20 at 02:03 PM ----------



I think I would consider Apple - one of the world’s most valuable companies - an alternative rather than a niche.
Forum: Pentax News and Rumors 07-28-2020, 12:34 PM  
Meet the new flagship
Posted By AggieDad
Replies: 765
Views: 73,968
I have a question rather than a comment.

Somewhere in the midst of all this discussion, there were comments (and cheers) about still having 2 SD card slots. I am wondering if there is really any reason for this anymore. Today SD cards are available in very large capacities – up to 512 GB. I have two 64 GB cards in my K3-ii. That's about 2200 RAW images.

With this kind of capacity why bother with a second SD slot?

Just wonderin' on a hot summer day...

Don
Forum: Mini-Challenges, Games, and Photo Stories 07-25-2020, 08:30 AM  
Panorama-orama - Post your Panos
Posted By AggieDad
Replies: 2,388
Views: 215,696
I was doing some tests of my home-built automatic pano rig and took this pano with a 100mm lens. It is a 120º pano stitching together 30 frames. The pano is 70,500 pixels wide and only about 5,350 pixels high as I was not taking any multi-row panos that day. I know it looks absurd, but my purpose was only to test my pano rig with 30 images and a small (4º) camera move.

The second image is a crop of just over 5% of the pano's width – 3600 pixels – which shows the detail that a longer lens can yield when used for panoramic pictures.
Forum: Pentax News and Rumors 07-22-2020, 01:41 PM  
Meet the new flagship
Posted By AggieDad
Replies: 765
Views: 73,968
Ah! Thank you for that information, Wheatfield. I did not know that.
Forum: Pentax News and Rumors 07-22-2020, 12:05 PM  
Meet the new flagship
Posted By AggieDad
Replies: 765
Views: 73,968
It's a chuckle to me to read all the comments and excitement about the silver and black camera body. If my memory serves me, it used to be (way back when) that silver/black SLR bodies were for consumers and all-black bodies were for the pros. Guys wanted all-black to "look pro."

Also, why all the dither over the silver and black? Do you care what color your electric drill is? It's a tool. Isn't the camera also just a tool?

What am I missing? Is it just because I'm a grouchy old man? Yeah, probably. Okay, I've answered my own question. You should just ignore all the preceding stuff. :o
Forum: Mini-Challenges, Games, and Photo Stories 07-22-2020, 08:20 AM  
Just Black and White-ur B/W Monochrome photos here
Posted By AggieDad
Replies: 21,072
Views: 1,508,420
I should have been posting here before this, but...

Anyway, I work quite a bit in monochrome and like inanimate objects as I find they are more cooperative for an old man who is often a bit slow setting up for a shot. Consequently, I really like old cemeteries and headstones – you can't get much more inanimate. :)

So here are a couple of old graveyard shots.
Forum: Do-It-Yourself 07-16-2020, 10:26 AM  
Pano-Riffic -- Automatic Panoramas
Posted By AggieDad
Replies: 4
Views: 585
Not yet. Adding vertical movement will be Phase 2 of the project. When I do add the vertical move, the commercial pano head will go away and the camera arm will rotate on a vertical channel. It will use an identical servo and geartrain as I have for the horizontal rotation. The idea will be to allow multiple rows of images that can result in really large images with great detail – or just taller panos.

I expect I will start messing around with the vertical movement come the end of summer.
Search took 0.02 seconds | Showing results 1 to 25 of 300

 
Forum Jump


All times are GMT -7. The time now is 02:29 AM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top