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Forum: Post Your Photos!
06-14-2016, 11:03 AM
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Forum: Pentax DSLR Discussion
12-04-2011, 09:35 PM
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For the K-x you either have to enter debug mode or get someone to do it for you (i.e. a service center).
https://www.pentaxforums.com/forums/pentax-dslr-discussion/103446-selective-a...stment-kx.html
What you need to do is create a file called MODSET.492 in the root of the SD card with the following contents:
[OPEN_DEBUG_MENU]
Make sure there is a carriage return at the end of the line (i.e. hit enter after the last ] ). Then, turn on your camera while holding the AV button. You will see the text "debug mode . Press the right arrow button and it will become enabled.
Next, press ok, go into the menu, and scroll past the 4th tab of the setting menu. Instead of going to custom function tab #1, a debug menu will open.
Then, select "AF Test" and you will see the same screen that is now publicly accessible on newer SLRs.
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Forum: Pentax DSLR Discussion
05-05-2010, 12:04 PM
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Old Think: never resize upward, maximum print size is dependent on what you get from the camera
New Think: modern resizing algorithms in quality software can do a creditable job of upsizing your images. In addition, comercial printing companies, e.g. MPIX, Costco, many others, seem to be using printing equipment that can do a remarkable job upsizing/smoothing at relatively low resolution. For example, this table was quoted from a help view out of the Costcon online printshop:
For the 20x30 poster, the pixels listed equate to only 115 ppi resolution. I've printed 12X36" from my local costco. I always resize my images to 300 ppi myself using Lightroom before submitting them.
Whether Kx or any camera, you need to try to get the sharpest photos you can. My standard is that at 8X LCD magnifcation on my K20, it should look reasonably sharp. Faster shutter speeds, monopods, tripods especially can really help your printing results because they result in a sharper image. I'm sure your Kx can print to 24 x 36" because i've printed to 12 x 36 with a K10.
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Forum: Pentax DSLR Discussion
05-05-2010, 10:02 AM
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Ok, lets calculate (width)
Assuming that normal photolab prints 300-400 dpi --- 4288 / 300 ~= 14,3 inches or 36,3 cm
That is slightly (by 6,5 cm larger in width than A4 paper size).
But that size is for close viewing - looking at photo in your hands.
If you wanna expose your photos on the wall - 150 dpi is enough. So you get 28,5 inches or 72,5 cm in width (larger side). That is between A1 and A2.
In practice - even *ist D.. resolution is enough for making A3 prints for expositions.
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Forum: Pentax DSLR Discussion
05-05-2010, 09:51 AM
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Good looking prints depend on a lot of things, including the ISO of your shot, as well as the image resolution you shot it at.
According to the imaging experts at Imaging Resource, who looked at print quality in their very extensive review of the Kx...
So I wouldn't necessarily restrict myself to 8x12 prints with the K-x.
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Forum: Pentax SLR Lens Discussion
07-25-2011, 05:04 PM
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I didn't find the DA 55-300 to be significantly better optically, if at all it is better. But the bottom line would be around how you prefer to focus. If you use AF, go for the DA/DAL - it has a shorter focus throw, so it should focus faster. If you use MF, go for the FA - it has a longer focus throw, which makes it easier to focus manually. The FA also has a distance scale on the focusing ring, unlike the DAL. Finally, the DA/DAL should be a tiny bit more compact than the FA.
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Forum: Digital Processing, Software, and Printing
06-08-2011, 12:42 AM
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Print size is determined by the dpi you chose to print at, the lower the dpi the lower the resolution but larger the print.
For standard paper photos the recommendation is 300dpi. But when you print to canvas you also lose some of the detail anyway, so around 200dpi can yield good results.
The image size your camera produces is about 4288x2848 I think, so you just divide those by the resolution you want (ie. 300 for 300 dpi). At 200dpi the print size is about 20x14", to get 20x30" your down at 140dpi. There would be a discernible loss in quality but if your viewing distance is at 5ft then it may not be an issue.
Just bear in mind I haven't printed to canvas so as to whether 140dpi is acceptable, others should chime in.
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Forum: Pentax SLR Lens Discussion
05-11-2011, 07:59 PM
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Did you set the aperture ring to the 'A' position? You may have to push a button on the aperture ring to move it to the 'A' position.
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