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Forum: Pentax Full Frame 10-30-2011, 07:21 PM  
Pentax Full Frame - An official statement from Pentax (they listened!)
Posted By dmdctusa
Replies: 3,121
Views: 306,465
When I click the update link, I am taken back to the forum page; not to the reply?
Forum: Post Your Photos! 01-17-2008, 09:16 PM  
Great doggie portrait setup
Posted By dmdctusa
Replies: 11
Views: 1,435
This was made with a single Sunpak 383 into a Wescott silver compact umbrella high and to the right. The K10D with the Voightlander 90mm did its usual good work.

No one but Cosmo is allowed to sit in this red velvet chair....his throne so to speak

David
Forum: Pentax DSLR Discussion 10-06-2007, 01:30 PM  
K10D Questions re Voigtlander 90mm APO f3.5 in KA mount
Posted By dmdctusa
Replies: 4
Views: 1,808
I have learned to live with it since the exposure is ok and as the 90 CV is my all time favorite portrait lens!!

My exif data is just blank as to aperture but I do get a focal length setting of 85, the nearest to the 90mm of the lens.

I was very lucky, the next week after I bought it the 90KA mount was sold out. I find the mechanical and optical quality equal to similar Leica and Zeiss lenses I used in my film days.
Forum: Pentax SLR Lens Discussion 10-03-2007, 06:20 PM  
In Praise Of The 18-55 Kit Lens
Posted By dmdctusa
Replies: 21
Views: 5,895
Please see the note I added to my Vivitar 285HV post above re the eBay trigger model numbers.
Forum: Pentax SLR Lens Discussion 10-02-2007, 07:13 PM  
In Praise Of The 18-55 Kit Lens
Posted By dmdctusa
Replies: 21
Views: 5,895
Thanks to the Stobist.com (David Hobby) blog site, I become a convert to manual (and off camera flash).

Based on the favorable comments on David Hobby's site, I bought the Vivitar 285HV. The general street price seems to be $90US ($89.95 at B&H). I could not be more pleased and will be adding two more to my kit...three flashes for less that the price of one high end name brand flash.

The auto performance is also very good but I mostly use the manual settings which go form Full to 1/2, 1/4 & 1/8.

Added notes:

1. With NiMH batteries the recycle performance is much improved.
2. The 4AA batteries are held in a plastic clip....extra clips are available and spped up battery changes.
3. For maximum performance the flash should be charged and flashed 4 or 5 time at the beginning of a session.
4. It works reliably with the eBay 16 channel RD616 radio slave set, providing the capacitors are formed (see 3 above).
5. The the 16 channel trigger connection can be improve by a FlashZebra.com connector which mates to the Vivitar proprietary cable connection and has a 1/4 phono to mate with Pocket Wizard, MicroSynch and the RD616 triggers.

Although many complain about the Vivitar connection it is a vast improvement over the standard PC connector.

Added note: The radio slave model number is RD616; the matching radio trigger is model number RF616...the box for the set is label in chinese and does seem to have ay arabic numerals model number on it.
Forum: Pentax DSLR Discussion 09-27-2007, 03:03 PM  
K10D RAW File Support AT LAST in latest Corel® Paint Shop Pro® Photo X2 !
Posted By dmdctusa
Replies: 32
Views: 5,697
Last week I downloaded PSP Photo X2 for the free trial. Overall I liked what I saw until I went into the layers mode with a 16bit Tiff. I go an error message indicating that the function was only available for 8-bit files.

I went back to the Corel web site but could find no definitive answer to the 8 vs 16 bit issue.

Perhaps someone will clarify this for me.

Thanks
Forum: Pentax DSLR Discussion 09-27-2007, 02:40 PM  
Camera asks for focal length each time?
Posted By dmdctusa
Replies: 22
Views: 2,990
An added point re manual focus lens....

The neat thing about the SR focal length setting is that the camera remembers and shows the selected settings each time you turn on the camera until you change lenses again. Just a touch of the shutter release ends the message display.
Forum: Pentax DSLR Discussion 09-20-2007, 07:08 PM  
Advice - Equipment selection
Posted By dmdctusa
Replies: 5
Views: 1,596
For a good introduction to flash use check out the stobist.com blog-site. Just about everything you need to know about flash photography can be found there or through the site links.

There are some good tutorial as well as a series of assignments and follow up discussion.
Forum: Pentax DSLR Discussion 09-13-2007, 11:39 AM  
Transfering images from to K10D to a Portable Hard drivre
Posted By dmdctusa
Replies: 41
Views: 4,619
Picking up on the point re low price of memory cards and the fact that you want to keep a back up as opposed to just more cards.....

Bushell makes a device that lets you transfer from one SD card to another and it as a veiwing screen so you can confirm the transfer (B&H photo carries them...see portable storage and viewers). I am considering getting one and and a couple more 4 gig SD cards reseved as backup cards. I am very wary of carring a hard drive on a trip where it may get banged around at airport security checks. I am far more trustful of solid state memory once its be formatted and tested a few times.
Forum: Pentax DSLR Discussion 09-13-2007, 10:49 AM  
Vivitar 2500 on K100D
Posted By dmdctusa
Replies: 7
Views: 3,653
If you want to use a flash with an unknown voltage, you should check out the Wein Safe-Sync hotshoe adapters. These reduce higher voltages to a safe level (6 volts). My local store carries them and if your's doesn't the major mailorder photo outlets do....like B&H, Adorama, etc.

Wein's link is: Safe Syncs
-------------------------
Forum: Digital Processing, Software, and Printing 09-02-2007, 11:06 AM  
Post Processing - Copyright & Data Management
Posted By dmdctusa
Replies: 1
Views: 1,657
If like me, you want to protect your legal rights in your photograph with metadata in the image, I recommend that you check out the recently published IPTC meta data road map entitled Photo Meda Data White Paper 2007 . The link is here:

IPTC Web-photo metadata

The download link is at the right side of the page under Resources.

I found it particularly helpful in understanding the ongoing battle to protect a photographers legal right.

Also, there seems to be pressure to change the copyright law to provide that if a user makes a reasonable attempt contact the owner but can not find the the copyright holder then he can use the image without prejudice. I have started putting my email address directly in the body of copyright notice. That's the one place I can be sure I can be contacted no matter where I am at any given time....I am using gmail and am betting on Google being around at least as long as I am.
Forum: Digital Processing, Software, and Printing 09-01-2007, 08:42 PM  
if you've tried all the rest, would you say Lightroom is the best?
Posted By dmdctusa
Replies: 20
Views: 5,000
I beta tested Lightroom from the first beta to preview version 1.0. However, after trying and comparing Lightzone (from Light Crafts) with Lightroom, I chose it over Lightroom or an upgrade from PS7 to PS CS3.

I found working with Lightzone was far more intuitive and Lightzone's conversion of PEF and/or DNG's is excellent in my opinion. Also since Lightzone uses templates to make the intial conversion adjustments, you can see the template adjustment settings. Normally I don''t adjust the original settings but add my own adjustment tools to the tool layers. However, if I want to save a particular tool stack for future use with other images I can do so.

Like Lightroom, Lightzone is a non destructive editor and the edited image format is very compact. It does not use xmp files but rather incorporates the tool stack into it lzn format which is very compact which shows up in the bowers as the modified image and multiple versions of the same image can be stacked.

The only thing I miss in Lightzone is the print formatting features of Lightroom. The actual prints from Lightzone are spot on in my setup using the Adobe RGB 1998 profile from camera to final image.

Lightzone 3.0 is available for a 30 day free trial. I would recommend giving it a test drive before making a final decision.

Mike Hughes in his Online Photographer blog when discussing Adobes new personnel additions which appear to be taking Adobe further into the hyper technical realm of photography concluded with this statement "I suppose that technology does make sense for Photoshop, but it makes me wish I'd started out with LightZone and nothing but LightZone."
To to me that is food for thought.
Forum: Pentax DSLR Discussion 08-27-2007, 06:14 PM  
Anybody having problems with PEF files over 16,5 MB?
Posted By dmdctusa
Replies: 11
Views: 2,786
All my PEFs run between 10 and 13M. Since the problem has occurred in both 1.1 and 1.3, I wonder if the problem is with a particular brand of card? Any commonality of make between those reporting problems?

If it occurs with a particular type of image....very light or very dark, etc. could be a sign of in camera processing problem....though I have taken some 2000 images and not seen the problem.

Last some people have reported problems if the card is maxed out capacity wise....the last images have problems....just a last thought.
Forum: Photographic Technique 08-27-2007, 11:52 AM  
K10D at 6 months - ISO and Kelvin matters
Posted By dmdctusa
Replies: 2
Views: 2,456
This post was of result of the this forums previous thread about images showing high kelvin temps.

As a result of the notice that a new version of Silky Pix was available I downloaded it and ran a comparison of the kelvin temps of a pef from my K10D

My principal computer for editing is a WinXP Intel 1.8ghz Core Duo, 2gb memory, Nvidia Geforce 7000LE card feeding a Sony Triniton monitor and an Epson 2200 printer.

I took the PEF and converted it to a DNG using Adobes DNG converter. The PEF and DNG version showed the same kelvin temp in all the following tests:

All images were processed at the software's default conversion settings. No sharpening or Noise reduction was applied by me. The results are as follows:

Software Kelvin Temp.

Silky Pix 3.0 5908
Lightzone 6958
UFRaw Converter 7952

I could not test with PS or Lightroom as I only have PS7 and my Lightroom beta gave way to Lightzone.

My comparison of the images in the three tests showed no drastic differences in the processed image's appearance despite the temperature variations indicated by the software. Conclusion....don't worry just follow your eyes and taste.

The difference between a PEF conversion and DNG conversion did that Adobe's DNG is NOT completely neutral as to the DNG conversion process. The DNG had a very subtle decrease in saturation and contrast...and was to my taste in the right direction with respect to the default PEF version.

My attempt to illustrate falls short of seeing the images on a monitor, but the image below is an Epson jpeg (100%) scan of glossy 4x6 prints of the PEF (top) and DNG (bottom) printed from Silky Pix to the Epson 2200 at default color settings and at 2880dpi. The original monitor views were closer than what you see. Clearly the Epson scanner had its effect also...not the best or most scientific way but a least a clue.

The result of this test confirmed my choice of the K10D the EXIF data for the PEF reminded me just how good the K10D is despite all the comments about noise, auto focus, etc. etc.

This image was shot with my new C-V 90mm f3.5 APO Lanthar at f3.5, 1/30sec and ISO 1100.
Forum: Pentax DSLR Discussion 08-27-2007, 11:16 AM  
High kelvin Temperatures
Posted By dmdctusa
Replies: 10
Views: 2,174
Hello all...

I originally intended to post further analysis of this issue here but in view of my findings and subsidiary comment I decided to create a whole new thread.

The link to the post is: https://www.pentaxforums.com/forums/general-pentax-photography/11189-k10d-6-m...n-matters.html


David
Forum: Pentax DSLR Discussion 08-22-2007, 06:44 PM  
High kelvin Temperatures
Posted By dmdctusa
Replies: 10
Views: 2,174
It's not clear if you are shooting PEF and converting to DNG or shooting DNG directly. In any case if your using Windows I would suggest you shoot some PEF's and use UFRaw, a graphic interface version of Dave Coffin's DCRaw, as a test. UFRaw is free and can be downloaded from Sourceforge.net ( UFRaw - Home ).

I shoot PEF but use ImageIngester to download and it converts my PEF's to DNG via Adobe's DNG Converter. I generally use the DNGs as my work files and keep the PEFs as the archive.

I use Lightzone 3.0 as my primary editor and normally find no difference in LZ's default conversion of the PEF vs the DNG. However, the have been instances where I did not get the image I was looking for even with post conversion edits. Here, I found UFRaw to be the answer.

Dave Coffin's DCraw is widely acknowledged as one the the best raw conversion programs and it can handle virtualy every Raw format out there. However, prior to UFRaw it was a Windows command line program (think DOS on 1980's x86PC). Dave deserves kudos for the work he as done and ( Udi Fuchs Udi Fuchs Photography homepage ) for the GUI version. WELL DONE GUYS!!!
Forum: Pentax DSLR Discussion 08-22-2007, 06:15 PM  
Lens for low-light theatre work
Posted By dmdctusa
Replies: 16
Views: 3,914
Since your near Dallas, you could check with some of the pro camera shops and see if you could rent an FA 85mm/f1.4 or a K 85mm/f1.8. These would work if your re shooting from the audience point of view. If your on-stage then the FA 77/1.8 Limited would work. I am near NYC so rental of a special lens is a real option. Since Dallas is also a film and media center, I would think you may have some similar options.
Forum: Pentax DSLR Discussion 08-22-2007, 05:47 PM  
Pentax got it right with the K10D
Posted By dmdctusa
Replies: 13
Views: 1,676
For an introduction to HDR imaging, I would recommend Photomatix Pro's free trial which is unlimted (the images are watermarked however). I found it easy to use with the K10's 5 shot auto bracket mode. The program works with the PEF files and prefers raw files in their linear mode. A quick read of the the help manual will get you started.

The link is: HDR photo software & plugin - Tone Mapping, Exposure Blending & HDR Imaging for photography

I will be adding this program to my workflow as I have decided to skip CS3 in favor of Lightzone (LightCrafts.com.....not Lightroom from Adobe). The combination of Photomatix Pro and Lightzone makes me feel I am back in my wet darkroom again...without the mess and the allergic reactions!
Forum: Pentax DSLR Discussion 08-19-2007, 11:17 AM  
Pentax K10D at ISO1100
Posted By dmdctusa
Replies: 0
Views: 1,537
The following photograph was taken on my K10D (v1.30) with a Cosina- Voigtlander APO Lanthar 90mm/f3.5 I really was not paying too much attention when I took this as the light was only from a 60watt incandescent bulb and the aperture was wide open at f3.5. The shutter speed at ISO 1100 was 1/90th sec.

When I finally viewed the files, I was amazed at the quality of the raw image and set to work with Ligthtzone to convert it to a B&W. For the record the DNG was a) de-noised in Noise Ninja then b) covrerted to B&W using the LZ conversion tool and two separate zone maps before apply the Palladium finish template to the final image. The images shown here are proofs made from Breeze Browser Pro. Also if you look closely, you can see several fuzzies in the artificial flower...must dust it the next time!

I think the camera was also AWB. The exif data is:
File: 20070809_2394.dng
File size: 17.1MB
Camera Model: PENTAX K10D
Firmware: K10D Ver 1.30
Date/Time: 2007:08:09 22:55:56
Shutter speed: 1/90 sec
Exposure mode: Manual
Flash: Off
Metering mode: Center-weighted average
ISO: 1100
Focal length: 85mm
Focal length: 127mm (in 35mm film)
Image size: 3888 x 2608
Saturation: Low
Sharpness: Normal
Contrast: Normal
Forum: Pentax DSLR Discussion 08-04-2007, 04:18 PM  
Problems w/K10D and Sigma Lens?
Posted By dmdctusa
Replies: 16
Views: 2,574
As noted in a previous post the upper left hand area (in the blue sky) exhibits a similar pattern. My best guess that the there is a mis-alignment or other fault in the bayer pattern screen.

If so this would clearly be a warranty issue.

By the way have you upgraded to firmware 1.30 yet? If not, you might want to do so to see if it makes any difference. Sometimes the firmware contains un-documented changes to the image processing software.

I have no similar issue with my K10D @ firmware 1.30.
Forum: Pentax DSLR Discussion 08-04-2007, 03:58 PM  
Anyone Tried this K10D Remote Control ?
Posted By dmdctusa
Replies: 34
Views: 8,114
My dealer did not have the newer "F" remote in stock. The Pentax rep told him that the late model remotes for the film cameras work with the K10D ( and I presume the K100, etc.) I bought the D model and it work fine....$14.95.

One point in favor of the IR remotes...you don't lose the camera's weather sealing as you do when you use the cable linked plug-in remote. A great feature is your doing tripod mounted shots in less than perfect weather.
Forum: Pentax DSLR Discussion 08-02-2007, 02:29 PM  
holding on to the K10D with battery grip
Posted By dmdctusa
Replies: 24
Views: 2,856
Another option I have used is to take an old movie camera hand strap...the kind screws into the camera's (or grips) tripod mount...remove the hand strap then run the regular camera strap from the body's left mount to the ring in the hand strap. If you need to use a tripod just unscrew the hand strap screw.

If you want the best quick release for a strap go to Lutz Konermann's site:

www.leicagoodies.com

The Hook is the best quick release I have found. I use a strap rigged as shown on his home page both on my rangefinder and my K10D using the hand strap screw described above. The camera hangs upside down but this is no problem if you are a fast cross draw expert.

Regards,
Forum: Pentax DSLR Discussion 08-02-2007, 02:01 PM  
K10D Questions re Voigtlander 90mm APO f3.5 in KA mount
Posted By dmdctusa
Replies: 4
Views: 1,808
I just got a 90mm manual focus C-V APO Lanthar 90mm-f/3.5 which is in the K mount allowing auto aperture. The lens is outstanding and focuses to 16 inches for a 1:3.5 image ratio....perfect for flower and still life shots.

Exposure in full manual mode (both aperture and focus) is spot on...no problems. When I switch the lens to the "A" setting and use Av mode and set the lens wide open using the Aperture dial, the setting is registered as f2.4 instead of f3.5. This is also the setting that is recorded in the EXIF information and preview data.

In spite of this erroneous reading the image exposure is correct and is identical to the a manually set f/3.5 image.

I thought I saw a recent reference somewhere that firmware 1.30 is causing some aperture indication problems.

Apparently the lens works perfectly on all Pentax film slr's. The last production run of the lens was in 2001 so maybe something changed in digital K mounts.

All thoughts and comments appreciated.
Forum: Pentax DSLR Discussion 07-30-2007, 06:59 AM  
Have a k10d firmware update failure ,what can i do now?
Posted By dmdctusa
Replies: 40
Views: 6,575
I am now at 1.30 and have had no problems. However, at each up grade I have recharged the battery completely before make the upgrade. Also, I reformated the card in camera before dowloading and I remove and reinsert the card in the PC to check its readability before updating the camera. I also make sure the came rests in a stable (immobile) position during the upgrade to make sure some movement does not cause the card to lose contact.

I noted that Pentax suggests using the a/c adapter when upgrading firmware. I am finding that the K10D battery indicator is not very precise in its level indication and previous experience tells me batteries can be fickle. Next time I will get (and use) the a/c adapter as suggested.
Forum: Pentax DSLR Discussion 07-29-2007, 10:28 AM  
Argh !! Apparent Paintshop Pro XI problem with K10D ??
Posted By dmdctusa
Replies: 24
Views: 3,461
Recenty I saw a web reference to the K10D PEF format which stated that it is the same as the K100 PEF but the file header identifies the camera as the K10D. Unfortunately I did not save the post....can anyone confirm this?

If true the there is no excuse for software publishers for not giving us a K10D update. Also if true, one could try to modify the PEF header file to see if they it be read.

I have the same problem with Breeze Browser Pro, the latest version 1.7.1 will read on the embeded JPEG but will not allow conversion of of the PEF to JPEG or TIFF. I wrote Chris Breeze and got a typical "so?" answer.

Seems to me that these developers are in the pockets of "CaNikon"
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