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Forum: Troubleshooting and Beginner Help 03-19-2014, 10:49 AM  
First SLR Film Camera
Posted By jfdavis58
Replies: 23
Views: 2,091
There is a mildly interesting thought process occurring here: you want to go backward in order to go forward. Somehow shooting a manual film camera will give you a better 'eye' for when you return to do work with a modern digital camera. (Don't read too much into this post as I wish to remain somewhat 'outside' or on the periphery of things--just saying.) You must have some money to burn. Have you ever considered that you could do the same by acquiring a stack of 'picture' books from various era's/photographers/sources and just trying some old fashioned emulation?

Please don't take this wrong, I've got boxes of old film cameras that I still enjoy playing with and I wouldn't dream of denying anyone the opportunity to relive that era, but... Who do you most admire or perhaps most enjoy? Logically, you must have seen their work, so I'm guessing it's published in some form. Pick some aspect of that work and 'shoot for that' outcome. I've found that it's seldom the camera or the capture media or the process that made the photo--it's usually the mind behind it.
Forum: Pentax Film SLR Discussion 03-16-2011, 12:01 PM  
What B&W film?
Posted By jfdavis58
Replies: 49
Views: 6,404
Tri-X/D-76.

Shoot it normal for your camera, process the same.

After 20 years of not shooting B&W film, unless you have plenty of time(/money) to experiment, Wedding 101 says stick to something that works, period.

I'd loan you my cans/reels/equipment, but shipping costs would bankrupt both of us.
(And I'd want something valuable as a deposit :lol:)
Forum: Photographic Technique 10-01-2009, 05:17 PM  
Tips for Balloon Glow photography?
Posted By jfdavis58
Replies: 20
Views: 10,030
Balloon glows (in the Albuquerque Fiesta) come in two forms: A pre-dawn event, typically called a Dawn Patrol where a small group of pilots and balloons launch to further the 'weather picture'--a winds aloft thing and a true Balloon Glow event where (large) numbers of balloons stay tethered to their support vehicles and crew and spectators serve as additional ballast, inflate and purposefully fire their burners, sometimes on command, sometimes to music done either just at total darkness in the evening or as a pre-launch event in the very early morning. The entire envelop 'glows' with a strong yellow-orange light.

Here's a link to the AIBF.

I'm a bit jaded. I live in Albuquerque and have attended some events in all 37 annual Balloon Fiesta's. The launch field has moved and evolved. I live about a half mile from the original site where only a couple balloons made the original event. The current home is able to inflate and launch 200-300 balloons in waves of 20 or so, every minute. Starting this Saturday (weather permitting) as many as 1000 balloons will launch every morning for the next nine days.
Forum: Photographic Technique 09-30-2009, 10:09 AM  
Tips for Balloon Glow photography?
Posted By jfdavis58
Replies: 20
Views: 10,030
How many balloons? How close can you approach? Haw far must you walk?


















How about this: any lens, but fast is good; fully automatic and a support (monopod/pole or tripod helps) but play if you like; tend toward a fast 'film' speed but don't get hung-up on it. It's really hard to miss-take my word for it.


These are from THE BALLOON FIESTA: ALBUQUERQUE INTERNATIONAL BALLOON FIESTA 2006--the morning of THE FLIGHT OF NATIONS-Not exactly a 'glow' but still dark and a target rich environment: about 900 balloons.
Forum: Photographic Technique 07-19-2008, 10:21 AM  
Barbie & Ken Raw Image
Posted By jfdavis58
Replies: 33
Views: 5,694
As a rather typical heterosexual male, my eye naturally seeks the female component in images. Here-in every image to this point-the female is very Barbie-like---plastic, stiff, over dressed---dead. Perfect.

Given that my jaded POV probably has some influence, the male component just isn't plastic enough--too much stubble, too much expression; his eyes are alive, soulful. His clothes are vaguely James Dean-ish not preppy, uppity privileged class.

From the lighting-which has generated some very interesting effects and the set work I can only conclude that this is a HIGHLY personal and STYLIZED vision set in, what, a movie prop for a horror picture???

It's definitely a Kanarek image, from start to finish, disjointed, gaudy, twisted and over-the-top. Some days this will sit well with a person like me, other days it's just 'more of the same'. Today, I'm somewhere in-between.

For me B&K are all about little girls, plastic dolls, stereotypical bright girly colors and childish make believe. You got the girl, some plastic and the make believe--must be nice not having to grow up. HEY! Now I get it! Some guys get all the fun!
Forum: Pentax DSLR Discussion 05-15-2008, 08:18 PM  
To all concerned with K20D/Hot Pixel Issue
Posted By jfdavis58
Replies: 170
Views: 21,204
..........

Wow!

..........
Forum: Photographic Technique 01-10-2008, 03:09 PM  
Cameras and Cold
Posted By jfdavis58
Replies: 31
Views: 4,491
So cold wet air becomes warm wet air--in a bag. With your camera.

Like i said, use your head! It's not about the air; it's about where the water goes.

Not by a long shot.
Forum: Photographic Technique 01-10-2008, 02:59 PM  
Cameras and Cold
Posted By jfdavis58
Replies: 31
Views: 4,491
And you've seen condensation when going from a cold place to a warm place---that defies physics, sir.

What you may have seen is rime icing and subsequent thawing of that ice appearing on the surface.

Regardless, sealing that moisture in a bag with the camera is stil BAD--and you cannot remove it from the air inside the box! Place a warming camera in a stream of warm air to assist in sublimation or direct evaporation of any rime ice.(do not use the direct heat from a furnace or stove--a draft will do--keep the towel handy.
Forum: Photographic Technique 01-10-2008, 02:49 PM  
Cameras and Cold
Posted By jfdavis58
Replies: 31
Views: 4,491
To clarify further: Pentax never says (in the manual) seal the plastic bag or use a sealable plastic bag--they reference your bag i.e. camera bag and as an alternative suggest plastic. Like the film clarification already stated--wait for temperature stabilization, i.e. camera at ambient temperature.
Forum: Photographic Technique 01-10-2008, 02:32 PM  
Cameras and Cold
Posted By jfdavis58
Replies: 31
Views: 4,491
Yeah, yeah, I know the manual says use a plastic bag too-----doesn't anybody ever use their own brain????????????????



You're in your warm house; they are never hermetically sealed, they breathe through stove and furnace vents, ceiling and rafter vents and around doors and windows--just to name a few places. The wet air outside is the same wet air inside--just warmer. And that warm air can actually hold more water---oh, btw chemical engineers can prove this--I'm one! And what's in house air is full of human debris too--goopy sloppy stuff!

So seal your spiffy camera in a plastic bag of nasty warm wet air and take it into the cold---You'll have fun watching it short-out and rust.

Forget the straw and vacuum trick--how you gonna get the air out of the inside of the camera with just lung power????

A towel to dry off the outside; let the condensation on the lens evaporate naturally as much as possible then a good lens cloth; shield it with it's own rain jacket (they make them or you can just use a garbage bag up-side-down cutting a hold for the lens) or an umbrella.






There is one and AFAIK only one use for sealable plastic bags in photography--when refrigerating or freezing film. The atmosphere in the typical home refrigerator/icebox is very much wetter than the surrounding room air. The bag keeps the film dry. You never open the bag until the bag and contents reach room temperature. And you dry the outside before unsealing! If you're using your head.
Forum: Photographic Technique 01-10-2008, 01:47 PM  
Cameras and Cold
Posted By jfdavis58
Replies: 31
Views: 4,491
Accidentally left my K100 in the car a couple nights ago. Daytime temp in the mid 30s, nighttime about 12. 'Found the camera about 1230 the next afternoon, temp in the mid 30s again. Opened case (Tamrac), turned it on, took some shots--worked fine. The K100 manual lists 0 to 40 degrees C--32-104 F as the cameras operating temperature range. I've used both of my K10d's, the K100d and the *ist0D at temps well below zero and above 105 F with no apparent ill effects. Rain and snow too!

The only time I've ever had 'trouble' was with a microdrive above 10,000 feet elevation--prettiest damn green squiggly lines across all the images.

Don't 'seal' the camera in anything--keep it dry with a towel or umbrella---it's needs to 'breathe' to avoid condensation if possible, to allow it to evaporate if it occurs.
Forum: Pentax DSLR Discussion 01-09-2008, 12:12 AM  
Help with White Balance
Posted By jfdavis58
Replies: 18
Views: 3,514
I went much further back with ths discussion-perhaps the beginning (vortout). The discussion was about the K100 not the K10. Even ran the Russian fellows little applets. I haven't been to DPR since late June 07 for more than just a few minutes, general looking so I missed this later work. I knew what Gorden and Ed were up to, but frankly I had already made some conclusions of my own:These guys are talented amateurs intent on 'numbering' the camera to obsessive levels--actual picture taking is secondary to all the pixel hacking and peeping. In general they are working from a self serving set of assumptions whose validity cannot be ascertained.

Very shortly after getting my K10 I had the good fortune to speak face to face with a highly-placed Pentax employee. Someone who knows enough engineering speak to understand what is being discussed. He is also an accomplished photographer in his own right. I don't have permission to use his name-don't like name dropping as a general rule anyway. We briefly discussed the DPR/vortout thread, the VPN threads, general 'flaws' like the flash issue, the cracked body issue and a few others both from the forums and elsewhere. It was very friendly and informal and I didn't take notes.

WRT to the WB issue; advise was "when in doubt, do a custom WB, even in RAW.

I've made no deep or definitive studies, run no experiments. I do enough of that crap for real at another job. I do take a significant number of photographs. And I trust my gut feelings. I get better results with spot custom white balance than with any of the presets--I spend less time in post--I like what comes out of the camera a lot better. It's a simple, fast procedure much like praying. It's my time to waste and if it turns out I wasted both WB and prayer what will it matter? On the other hand if I don't WB and pray and both ARE necessary think of the pile of poo I'll be in if I did neither!




QUOTE=jeffkrol;148794]Yep loved those discussions ... not...!
Anyways Gordonbgood's bottom line: The WB may have small effects on RAW files PRIOR to the k10.
k10 is supposed to be free of said trickery........
Re: RAW Tone Curves: Pentax SLR Talk Forum: Digital Photography Review[/QUOTE]
Forum: Photographic Technique 01-08-2008, 03:25 PM  
Any pros shooting 35mm?
Posted By jfdavis58
Replies: 91
Views: 8,999
Your home or this forum?
Forum: Pentax SLR Lens Discussion 01-08-2008, 03:17 PM  
How does Pentax photograph its own lenses?
Posted By jfdavis58
Replies: 8
Views: 1,552
Computer Aided Drafting-CAD; in 3 dimensions with simulated light (ray-tracing or similar)====>render/rendering.

While a rendered image might be used in preproduction or introductory hype, the 'after' stuff is probably shot by either an in-house group using the same cameras the company sells or farmed out to an agency that uses medium format equipment--make a guess.
Forum: Photographic Technique 01-08-2008, 03:10 PM  
Any pros shooting 35mm?
Posted By jfdavis58
Replies: 91
Views: 8,999
Case in point...









Inexperienced, naive, mis-informed, Perhaps.


Idiots--not a damn chance.
Forum: Pentax DSLR Discussion 01-08-2008, 03:04 PM  
Help with White Balance
Posted By jfdavis58
Replies: 18
Views: 3,514
This statement may not be entirely true:"WB has no effect on RAW files".

Shortly after the release of the K10 some folks over at DP
Review did some testing that seemed to show that WB was affecting the RAW data. In particular the red channel could be shifted significantly by shifting the WB preset. Green and blue channels had smaller shifts. The testing procedure was complex and convoluted, many questions remained and went largely unanswered.

A single fact remained: Few and perhaps no end users know the exact content of the RAW image data; backing up one step, none seem to know the details of how the data is generated. Specifically if the WB is a factor or not.
Forum: Photographic Technique 01-07-2008, 02:26 PM  
Dragging the Shutter
Posted By jfdavis58
Replies: 39
Views: 5,356
"Neil" is using a combination of manual and TTL flash-that article and his equipment are a bit 'dated'==a pair of D100 cameras?!?!?!

I really hate making things like this into a list--you seem to be showing a great deal of tolerance for those that do!! If I was backed into a corner I would summarize the process as flash less than what it calls for on automatic (camera other than manual, flash in any auto mode) this plus a little ambiient light gets the subject; background 1-4 stops more to get the dragging part of the shutter/aperture.

Leading and trailing curtain might come into play when you add the second part of Planet Neils article-motion. Trailing current sync will put the motion on the right side.

The best thing you have going at this point is your willingness to experiment--this technique really requires an intuitive feel approach--that would be the 'pro way'.
Forum: Pentax DSLR Discussion 01-07-2008, 12:13 PM  
Guaranted shutter release count
Posted By jfdavis58
Replies: 4
Views: 1,867
:lol::D:lol::D:lol::D:lol::D

:fedup::fedup::fedup::fedup::fedup:
Forum: Photographic Technique 01-07-2008, 12:11 PM  
Dragging the Shutter
Posted By jfdavis58
Replies: 39
Views: 5,356
Summarizing this technique into a nutshell will lead to a, well a mess. Try this article: from Planet Neil. It covers all the basics and has some examples.
Forum: Digital Processing, Software, and Printing 01-07-2008, 10:17 AM  
Sharpening for unknown print sizes
Posted By jfdavis58
Replies: 6
Views: 2,186
Are you familiar with the material at Pixel Genius? This is both the source and the focal point of 'output based sharpening'. Fraser et al developed a three step sharpening workflow and Photoshop Plug-in that rather completely addresses the issue. You might enjoy reading some of that material.

You could create three different sizes of files; each optimized for a particular output dimension. As an alternative you could size the image for some maximum, say 8 by 10 (inches){300 ppi=>2400 by 3000 pixels}, while sharpening for 5 by 7. The resultant file should be good at both 8 by 10 and 4 by 6 while it is excellent at 5 by 7-a compromise. Another alternative is to give them a full sized JPEG, fully processed and let them worry about downstream difficulties. You could also ask what their output needs might be.
Forum: Pentax DSLR Discussion 01-05-2008, 05:29 PM  
Menu Screen on K10D
Posted By jfdavis58
Replies: 12
Views: 1,613
The LCD goes out whenever one (or more) buttons is depressed--any of several buttons. Start with removing the battery grip and checking to see that all the buttons depress and return to the 'up' position. It will also go out if the lens is not properly mounted; remove and/or remount. Low batteries will also cause a failure-recharge. Try the menu button again and if the camera responds correctly, perform a system reset.
Forum: Photographic Technique 01-05-2008, 05:17 PM  
Watermark
Posted By jfdavis58
Replies: 16
Views: 4,511
Strong-arm tactics only work when the person applying the force--the photographer in this case--has money and courage to carry their convictions AND the person being forced--the thief--has something of value to loose, or no money to fight the photographer and under virtually all conditions a its paramount to have a common jurisdiction from which to fear the long arm of the law.

Repeatedly I see citizens here (and other photo forums) suggest everything from strong demand letters to actual court action--these are part of the same sequence of events as anyone who has actually followed that sequence could make testament to. But all that costs significant amounts of money and takes a great deal of time. A simple watermark won't stop a dedicated thief, but it may head-off a more naive person effectively. And it plants a name in the mind of the viewer; a person who may be searched-out for permission and terms; or just somebody whose work should be watched for.
Forum: Photographic Technique 01-05-2008, 04:48 PM  
Watermark
Posted By jfdavis58
Replies: 16
Views: 4,511
Tastefully applied watermarks can be an encouragement for keeping honest people honest; the dishonest will require more pro-active measures.

I like Watermark Factory for bulk stamping. It runs about $50.00us and has a nice feature set.

You might also want to check-out RoboGeo. This application can leave both a copyright stamp and a geographical location marking--requires a GPSr.
Forum: Post Your Photos! 01-04-2008, 06:31 PM  
What's wrong with this picture
Posted By jfdavis58
Replies: 5
Views: 1,252
I think the correct term for this effect is light-fall-off, not vignetting. Every lens suffers from light-fall-off approaching the edges to some extent but as you can see, special circumstances must be present before it become obvious.
Forum: Pentax SLR Lens Discussion 01-04-2008, 01:34 PM  
basic filter affecting AF function?
Posted By jfdavis58
Replies: 5
Views: 1,470
+1

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