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Forum: Photographic Industry and Professionals 04-09-2019, 05:44 PM  
Cactus Imaging - Is it still in business?
Posted By JeffBurns
Replies: 8
Views: 865
Cactus Imaging's web page has a bad certification. The page will still load if you tell your browser to ignore the bad certificate. What is up with this company?
Forum: Post Your Photos! 08-21-2018, 05:13 PM  
Best of 2016 Cape Elizabeth
Posted By JeffBurns
Replies: 5
Views: 444
Thanks!
Forum: Flashes, Lighting, and Studio 08-21-2018, 05:12 PM  
AC Powered Flash with Small Bulb
Posted By JeffBurns
Replies: 5
Views: 619
Good ideas, but not good enough for this application. I used a telecentric lens.
Forum: General Talk 08-21-2018, 05:04 PM  
11 days to go, still need 40%. Can we get there?
Posted By JeffBurns
Replies: 301
Views: 5,681
Yes - we will.
Forum: Pentax K-3 08-21-2018, 04:59 PM  
Current K-3ii pricing - as good as it'll get?
Posted By JeffBurns
Replies: 33
Views: 2,150
B&H is out of stock. Best order one soon.
Forum: Flashes, Lighting, and Studio 08-21-2018, 04:39 PM  
AC Powered Flash with Small Bulb
Posted By JeffBurns
Replies: 5
Views: 619
Lumedyne provided what I needed!
Forum: Flashes, Lighting, and Studio 08-21-2018, 04:36 PM  
Cactus V6II Relay mode
Posted By JeffBurns
Replies: 3
Views: 737
The latest firmware fixes this problem.
Forum: Pentax DSLR Discussion 06-21-2018, 03:28 AM  
Roberts camera and k-3 II
Posted By JeffBurns
Replies: 26
Views: 1,875
Roberts is local for me. Good people. Now if they would cary new Pentax gear.
Forum: Flashes, Lighting, and Studio 11-26-2017, 06:00 AM  
Cactus V6II Relay mode
Posted By JeffBurns
Replies: 3
Views: 737
Relay mode worked with my Pentax K-3, RF 60, and V6II with firmware versions:
RF 60 V205
V6II V1.1.013

Now, with with firmware RF 60 VA01 and V6II PEN.A.001, the flash fires too early.

I contacted Cactus, and they replied indicating it should work, but I still cannot get it to work. Has anyone else been able to get relay mode to work with a K-3?
Forum: Photographic Industry and Professionals 09-21-2017, 04:31 AM  
What would you charge?
Posted By JeffBurns
Replies: 8
Views: 1,116
The customer is not happy with his iPhone shots. That’s why he was looking for a photographer.
Forum: Photographic Industry and Professionals 09-20-2017, 06:38 PM  
What would you charge?
Posted By JeffBurns
Replies: 8
Views: 1,116
I just lost a small photo job based on price, and would like to know what you think is a fair price for the job.

A person in my neighborhood created a web page to sell brackets he makes to hang Jeep doors on the wall. He wants better pictures than the ones he took with his iPhone. I went over to look at his garage where the brackets are installed. There are a number of challenges. The garage door track partially occludes the wall, and there are many other things creating reflections and obstacles. If you look closely at the reflections in the doors, you can figure out what is in the room.

How much will it cost to persuade a photographer to take “better” pictures?
Forum: Flashes, Lighting, and Studio 07-26-2017, 08:18 AM  
AC Powered Flash with Small Bulb
Posted By JeffBurns
Replies: 5
Views: 619
I am working on an industrial lighting system that needs a concentrated beam of light. Currently, I am using Flashpoint eVOLV 200. This is the same as a Godox AD200. The flash tube in this light is only about an inch wide. I am able to use a lens to concentrate the light into a very narrow beam.
For the application I am developing, the flash must fire hundreds, perhaps even thousands, of times a day. Recycle times may only be one second. The little battery powered unit is not up to this. Can anyone suggest an industrial strength flash with a small bulb?
Forum: Pentax Medium Format 06-30-2017, 06:41 AM  
K1 vs 645z & Cost
Posted By JeffBurns
Replies: 33
Views: 5,270
I have a K-3 now, and expect if I added a K-1 and 645 my usage would be as you describe. A K-3 and 645z would be a good combination. The K-1 is too big to replace the K-3, but not quite the IQ of the 645z.
Forum: Pentax Medium Format 06-27-2017, 04:38 AM  
K1 vs 645z & Cost
Posted By JeffBurns
Replies: 33
Views: 5,270
In what situations would you prefer a K1 over a 645z and vice versa?

My local camera store has nearly new 645z I may be able to purchase at a good price. They also have several older 645 lenses. It is very unusual for them to have any Pentax gear. I think they purchased the stock of another store. At what price could a 645z be resold after a few months if I decide it is not for me?
Forum: Pentax K-1 01-14-2017, 12:59 PM  
K-1 for scientific imaging
Posted By JeffBurns
Replies: 11
Views: 1,373
Thanks, everyone, for your input so far.

Since this is a work project I cannot disclose much about my application. I can say that nothing is moving, so Pixel Shift will work fine, and the additional color data could be helpful.

What I really need to know is the degree to which a K-1 can be controlled from a computer, and if Pixel Shift is supported. Canon and Nikon cameras are supported by all sorts of programs. Computer control seems to be hit or miss for the mirrorless cameras.

I am involved in a wide variety of imaging projects. For short term projects a camera like a D810, K-1, or some mirrorless model is ideal. As the number of images that must be collected increases, it is important for me to have the ability to automate the process with remote control. Machine vision caneras work well for some applications, but they are expensive for the performance they give. It is also a pain to write the program to control them.

The K-1 has some capabilities that make it extremely attractive for some types of scientific imaging. It would be cool if Pentax released a remote control only camera with the K-1 chip and image stabilization module. This could be very useful for laboratory and drone applications.

Thanks for your input.
Forum: Pentax K-1 01-13-2017, 05:49 PM  
K-1 for scientific imaging
Posted By JeffBurns
Replies: 11
Views: 1,373
What are the options for tethering / remote control of a K-1 when in Pixel Shift mode?

I am setting up an imaging station in a laboratory environment. A C-mount industrial or microscopy camera would be the most conventional chose for this application, but a DSLR has some advantages. A Nikon D810 would be the safe choice. The specialized lenses I may need are available off the shelf in F mount, and there are many remote control options. The one thing the Nikon does not have is Pixel Shift.

Good remote operation is important to me. A technician will be taking hundreds of images a day for several months. I need to set this up so the operator just puts the object in the correct place, and pushes the button. If anyone has experience with this type of setup with any brand of DSLR I would like to learn about your experience. Making this foolproof for untrained personnel is one reason to stick with industrial cameras.

I have a K3, but it is not effectively supported by any remote control software.
Forum: Post Your Photos! 01-01-2017, 01:38 PM  
Best of 2016 Cape Elizabeth
Posted By JeffBurns
Replies: 5
Views: 444
HDR of five images.
Forum: Flashes, Lighting, and Studio 12-20-2016, 12:26 PM  
Cactus V6 II with Metz 48AF-1
Posted By JeffBurns
Replies: 14
Views: 1,220
I want to know if the V6II works as a receiver with a Metz 48AF-1. The V6 is supposed to work with the 48AF-1. No need to spend extra on the V6II if it does not work with my flash. I will probably go with a V6II for the transmitter on camera just for future compatibility with RF60x units that I hope to add later.
Forum: Flashes, Lighting, and Studio 12-19-2016, 07:58 PM  
Cactus V6 II with Metz 48AF-1
Posted By JeffBurns
Replies: 14
Views: 1,220
Will a Cactus V6 II work with a Metz 48AF-1?
Forum: Pentax SLR Lens Discussion 12-04-2016, 05:33 AM  
Grand Canyon Hiking Trip Lenses Recommendation
Posted By JeffBurns
Replies: 25
Views: 2,829
Forum: Pentax K-3 03-31-2016, 03:35 PM  
Movies not correctly time stamped in K3
Posted By JeffBurns
Replies: 1
Views: 874
On my K3 I have Hometown set as London and the destination set as Toronto with DST. This way I set the clock to UTC, but can get correct local time with the destination time setting.

Now I set “World Time" to home, and I take both a still image and a movie. The still image gets a time stamp according the to the home time, and the movie is stamped with the time according to the destination time. This seems to be a bug. Have I missed something?

Jeff
Forum: Pentax Camera and Field Accessories 03-04-2016, 06:40 PM  
Pano-Gimbal Head vs, Ballhead
Posted By JeffBurns
Replies: 9
Views: 2,141
I need the gimbal for multi row panoramas.
Forum: Pentax Camera and Field Accessories 03-03-2016, 09:13 AM  
Pano-Gimbal Head vs, Ballhead
Posted By JeffBurns
Replies: 9
Views: 2,141
Is anyone using a pano-gimbal head for everyday use instead of a Ballhead? I need to upgrade my tripod. Ideally I will get a good bullhead and a pano setup, but this gets very expensive. I also expect that I might leave the pano-gimbal head at home, and not have it when I need it. What would it be like to just use the pano-gimbal head for everything?

Has anyone tried the RRS PG-01 compact pano-gimbal with a K-3?

Jeff
Forum: Travel, Events, and Groups 03-01-2016, 03:31 PM  
Backpacking for a year...What lenses to bring ?
Posted By JeffBurns
Replies: 24
Views: 3,219
Before selecting equipment you need to think through your photographic objectives. Will you be happy with a few selfies, or do you expect a National Geographic quality documentary video? To clarify your objectives, find pictures of the places you plan to go on the internet and make a scrapbook. Think about the shots you want to get. This will help you plan the trip, and guide your gear selection. This process will also help you and your girlfriend align your expectations.

Think of everything you take as a system. The weight of any particular camera or lens is not likely to be a problem - it’s all the accessories! I have gone on vacation with large bags of chargers, power adapters, batteries, etc. This is where standardizing can pay off big time. Since you will be traveling in many different areas over a long time you need to think about compatibility, reliability, and availability of replacements.

Figure out if you and your girlfriend would do well sharing camera equipment. Two cameras that use the same lenses, batteries, and charger would have big advantages, but may or may not work for you. If sharing a system is a possibility for the two of you then this forum is sure to have ideas on the best combination for two photographers to share.

I like to carry my camera in a chest bag using a harness just for the bag. In this position the camera is always available and protected. Some people attach the chest bag to their backpack, but I do not like this arrangement because when the backpack comes off so does the camera. When I travel my camera is always with me, but my backpack comes off often.

You will probably be carrying a smart phone with a decent camera built in. This can serve as a backup camera, and for times when you want to lock up the big camera and go light. Think of your smart phone as part of your photographic system and do not duplicate its functionality.

Low-end compact cameras are often not much better than a smartphone. High-end small cameras can be more expensive than a good Pentax DSLR. Does the compact make sense if you have a phone and a DSLR? Since the compact is for your girlfriend let her make the decision.

I have the WR 18-135 and it would be my first choice for an all around travel lens. Adding the FA 50mm F1.4 gives you an option for low light. Unless you have very specific goals that require other lenses, leave them with someone who can mail them to you if you change your mind.
Forum: Pentax K-1 02-21-2016, 02:18 PM  
Weight with battery and SD card
Posted By JeffBurns
Replies: 4
Views: 852
The 210 g difference in weight between a K-1 and the K-3 is very significant to a backpacker. This is especially true when the added weight of a full frame lens is considered.

Last summer I spent eleven days backpacking at the Philmont Scout Ranch. I worked very hard to get my equipment weight down so I could take good photographic equipment. 210 g would have been over 1% of my total weight. To keep that in perspective I only took one shirt and it weighed 200 g. For that trip I took the K-3, 18-135 lens, polarizer, 5 batteries, cable release, chest case, and a TrailPix tripod adaptor for my trekking poles. Total weight was about 5 lbs. or 19% of my total gear weight. That is a lot to carry for 100 miles in the mountains!

For my Philmont trip I would have loved to use a 645Z for the landscape shots. When the boys were throwing tomahawks at dusk on a cloudy day a D5 would have been great. Carrying either of these heavy cameras would have been nearly impossible.

I would love to have the K-1, but am disappointed it weighs more than a D810.
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