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Forum: Pentax K-3 11-22-2015, 09:33 AM  
K3 sample shots ... post here !
Posted By LeRolls
Replies: 11,438
Views: 1,435,627
Forum: Pentax K-3 11-19-2015, 12:12 AM  
K3 sample shots ... post here !
Posted By LeRolls
Replies: 11,438
Views: 1,435,627
Forum: Post Your Photos! 08-10-2015, 04:38 AM  
Macro Jumping Spiders Galore!
Posted By lightbulb
Replies: 2
Views: 1,065
K5iis + Sigma 70mm + Yongnuo 560II + Custom Soft Box + Raynox DCR250 ( X-post) Do click on images for EXIF data.

_YH_1757 by Lightbulb2012, on Flickr
_YH_1634 by Lightbulb2012, on
Flickr_YH_1767 by Lightbulb2012, on Flickr
_YH_1759 by Lightbulb2012, on Flickr_YH_1762 by Lightbulb2012, on Flickr
Forum: Pentax K-3 04-26-2015, 05:36 AM  
K3 sample shots ... post here !
Posted By WPRESTO
Replies: 11,438
Views: 1,435,627
Sometimes the chrome is hopelessly shiny and it's impossible to avoid a selfie. Other times a selfie is intended. First image K3 with 17-70 Sigma, next two with 35 macro. Second image cross posted, as it should be shared with everyone.
Forum: Travel, Events, and Groups 02-28-2015, 08:55 PM  
2015 Pentax Forums T-Shirt Design Contest
Posted By PJ1
Replies: 367
Views: 63,343
There are some classy designs here. I have no class. But anyway ....




Forum: Travel, Events, and Groups 02-26-2015, 11:07 AM  
2015 Pentax Forums T-Shirt Design Contest
Posted By Unsane
Replies: 367
Views: 63,343
Here's Mine, could be refined a bit (e.g. placement etc.)
EDIT: Woops! Just noticed I missed a contact, that can be fixed in the final version.

---------- Post added 02-26-15 at 06:17 PM ----------

Sorry for the double post, but would it be possible to have the old t-shirts and new winners available to purchase indefinately? While the competition is an amazing idea, it would be nice to be able to get a wide selection of Pentax themed apparel that would also help to support the forums.
Forum: Travel, Events, and Groups 02-26-2015, 09:57 AM  
2015 Pentax Forums T-Shirt Design Contest
Posted By Rupert
Replies: 367
Views: 63,343
This is Otis' submission.......He wants them made in Extra Small sizes, and promises to order at least a billion of them.

Attachment 260089

Regards!:)
Forum: Pentax K-3 02-19-2015, 07:50 AM  
K3 sample shots ... post here !
Posted By Arne Bo
Replies: 11,438
Views: 1,435,627
For the fun of it. :)

Faces of Madness by Arne Bo, on Flickr
Forum: Pentax K-3 02-19-2015, 10:04 AM  
K3 sample shots ... post here !
Posted By savoche
Replies: 11,438
Views: 1,435,627
The five faces of life? :lol:

One a bit more traditional from me, playing with the DFA 100 and bounce flash.

Forum: Pentax K-3 02-19-2015, 11:08 AM  
K3 sample shots ... post here !
Posted By bobbotron
Replies: 11,438
Views: 1,435,627

Excavator from down the street. Rokinon 8mm fisheye on a gorilla pod tripod.
Forum: Pentax K-3 02-20-2015, 03:25 AM  
K3 sample shots ... post here !
Posted By AdrianM
Replies: 11,438
Views: 1,435,627
Black-fronted Dotterel, Byron Bay, New South Wales, Australia, 14 February 2015.

Pentax K-3, Sigma 500 f4.5 APO DG EX, Pentax HD 1.4x rear Converter, Metz 58AF-2 flash, Better Beamer FX-3, on tripod.
Forum: Pentax K-3 02-20-2015, 12:51 AM  
K3 sample shots ... post here !
Posted By kengoh
Replies: 11,438
Views: 1,435,627
K3 + Sigma 500 F4.5

Cut-Throat Finch

Cut Throat Finch (side view) by kengoh8888 more than 1.4M views, on Flickr
Forum: Pentax K-3 01-18-2015, 01:57 AM  
K3 sample shots ... post here !
Posted By kengoh
Replies: 11,438
Views: 1,435,627
2 kingfishers shot with K3 + Sigma 500 F4.5


Black Backed Kingfisher by kengoh8888, on Flickr


Blue Eared Kingfisher (backview) by kengoh8888, on Flickr
Forum: Post Your Photos! 01-11-2015, 07:05 AM  
Macro Small Anole Lizard
Posted By bluestringer
Replies: 4
Views: 622
K-10, 20mm tube behind 100mm f4 macro, ring flash..........
Forum: Pentax K-3 01-05-2015, 04:47 PM  
K3 sample shots ... post here !
Posted By zzeitg
Replies: 11,438
Views: 1,435,627
Just for fun... my son's sport car :)
(DA* 16-50)


Forum: Pentax Q 01-04-2015, 05:06 PM  
Osprey again- this time with Q7!!!
Posted By SteveNunez
Replies: 9
Views: 1,670
John, I agree with the lower noise levels with the Q7 over the Q.......not a tremendous difference but visible at 100%.
The images were all DNG files then processed to suit in PS.......mainly a little shadow lifting and downsizing.

I think Pentax's newest Q should be shaped just like a mini K5 (or other Pentax DSLR)- I bet that alone would spark sales as people tend to view DSLR's as the best in image quality........I think that would be killer- imagine how cool that would be!

Not quite this small- leave it at Q size~
Forum: Pentax K-5 12-10-2014, 08:08 AM  
Philippines with K5ii and18-135 WR
Posted By timb64
Replies: 11
Views: 1,904
Here's a few shots from my recent trip:-

Philippines Nov 2014 20 by timben64, on Flickr

Philippines Nov 2014 40 by timben64, on Flickr

Philippines Nov 2014 54 by timben64, on Flickr

Philippines Nov 2014 67 by timben64, on Flickr

Philippines Nov 2014 93 by timben64, on Flickr
Forum: Pentax SLR Lens Discussion 12-10-2014, 07:33 AM  
15/4 limited smc and HD version comparison
Posted By stanic
Replies: 19
Views: 3,495
Hi all, I would like to post this comparison aimed at showing the differencies between the "starburst" effect and bokeh of the DA 15/4 limited lenses in smc and HD version. These are screenshots from LR 3.6 and shots were taken in a quick succession.
Personally, I prefer the HD version for its clarity, reduced starburst and lower price :)
Thanks for comments!
Rastislav
Forum: Pentax K-3 11-29-2014, 03:51 AM  
K3 sample shots ... post here !
Posted By kengoh
Replies: 11,438
Views: 1,435,627
A collection of birdie shot by K3 +Sigma 500 F4.5 /DA*300 last year


Bird Portrait Collection 2013 by kengoh8888, on Flickr
Forum: Post Your Photos! 11-27-2014, 03:44 PM  
Macro Bonza Macro ( Super Macro )
Posted By old4570
Replies: 9
Views: 739








:o
Forum: Pentax SLR Lens Discussion 11-22-2014, 02:13 AM  
SMC Takumar 35/3.5 vs 35/2.0
Posted By Wild Mark
Replies: 26
Views: 4,497
From time to time I have noted various commentary on these two lenses, with the faster of the two often the subject of scathing/ praising reviews. The slower is often regarded as super sharp and as such 'better' than the f2 version.

I am lucky to have both and actually enjoy using them in different ways. Yes I can say they are different lenses each requiring their own understanding and application. Here, I am going to attempt a succinct description of those differences with a photo comparison to kick off discussion.

Aperture
Yes, there is the obvious difference (f3.5 vs f2.0) but, when you look closer there are some other notable differences. The 35/2.0 has an extra stop between f4 and f5.6 in addition to the wider apertures f2 and f2.8. The f-stops available on each of these lenses is as follows

35/3.5 35/2.0
- 2
- 2.8
3.5 3.5
4 4
- 5?
5.6 5.6
6.7? 6.7
8 8
9.6? 9.6?
11 11
16 16

Note: ? = unmarked stop and I am unsure what the stop number is.

Set on a tripod I ran though each aperture setting for each lens using Av mode as I was interested to see what the camera metering would do. Surprise surprise, the camera metered each lens differently at commensurate aperture settings. The 35/2.0 version metered a faster shutter speed for f3.5 and f4. At f5.6 both lenses metered roughly the same (1/80 for the 35/2.0 versus 1/100 for the 35/3.5). From f6.7 on the 35/3.5 metered a faster shutter speed. At f8 metering was as follows: 35/3.5 - 1/50 35/2.0 - 1/30 ....... Curious.

Focusing
Interesting situation here. The 35/3.5 is acclaimed to be super sharp, and much sharper than the 35/2.0. Well, my results indicate a peculiar circumstance that may narrow the perceived disparity between the two lenses. At f8, both lenses are meant to be close to their sharpest (although results indicate sharpness is good through to f16). When using the contrast detect focusing mechanism for achieving focus, the 35/3.5 is by far the sharpest of the two lenses. And, if I didn't have a split prism focusing screen, I might have given up there and then (and thrown the 35/2.0 in the bin with disgust). The following photos are taken at f8 with shutter speed for both lenses set at 1/50 with the 35/2.0 using in M mode to achieve the faster shutter speed (as metering in Av mode was 1/30)

SMC Takumar 35/3.5 @f8 1/50




SMC Takumar 35/32.0 @f8 1/50



I have also included the Av metered 35/2.0 photo taken @ f8 for those who are interested. Over exposed!



When using contrast detect with the 35/2.0 I noted substantial focus inaccuracy through the viewfinder suggesting that the lens was not in focus. So I took another photo, this time using the focusing screen ...... I think the results speak for themselves.




Bokeh
Well, the 35/3.5 has fewer elements and aperture blades (5) when compared to the 35/2.0 which has 6 aperture blades. The above photos show that the 35/2.0 is far superior (IMHO) when it comes to bokeh. The aperture blades give a nicer blur when compared to the harsher pentagon shaped pattern of the 35/3.5. Also, it appears that the 35/2.0 handles the highlights much better than the 35/3.5 giving a smoother OOF. Check out the silverbeet in the lower left corner as an example.

Colour
Both lenses seem to render in focus colours the same way. However, it is clear to me that the 35/2.0 renders colour in OOF areas much much better. More saturation and pleasing to the eye.

Conclusion
If I want an easy to focus compact sharp manual lens I would reach for the 35/3.5. It will give dependable results in a variety of conditions and situations. An all rounder.

But, if one were to sacrifice convenience and take the time to focus the 35/2.0 (and get the metering correct) then the faster of teh two lenses is the one to reach for. The 35/2.0 is fickle in focusing and metering is erratic but, get these two elements right and you get fantastic sharpness (quite respectable) combined with great colour rendering and bokeh. The lens has better DoF capabilities giving opportunity to enhance 3D effects.

I think the 35/3.5 is a good utility landscape/ streetscape wide angle (normal), whereas the 35/2.0 is a specialty lens capable of much more, but harder to use.

Comments welcome.
Forum: Post Your Photos! 10-18-2014, 04:48 PM  
Macro Razor Edge
Posted By wildlifephotog
Replies: 1
Views: 1,108
...That's my dream. That's my nightmare. Crawling, slithering, along the edge of a straight razor, and surviving"

Come's from watching that movie too many times. :)
Forum: Pentax K-3 09-02-2014, 09:30 AM  
K3 sample shots ... post here !
Posted By pgamble
Replies: 11,438
Views: 1,435,627
Just a small selection from circa 1500 that I liked.


All lenses got some use. This was the first trip with the Sigma 10-20 which I love - it probably got used 40% of the time for indoor (National Trust etc) and landscape.


Cheers

Paul.
Forum: Pentax K-3 07-06-2014, 06:46 AM  
I need help in processing a K-3 RAW file.
Posted By Stagnant
Replies: 9
Views: 2,111
Thank you, people, for your suggestions ! All of the contributions look great, but I prefer the more "neutral" looking version by Schraubstock and cgchang. When I was shooting this image the sun was right behind my back. Heat shimmer in this case is mostly because the water is too cold right now as opposed to the air. I guess the position of the sun and this slight mist are to blame for a dull-looking (in my opinion) image.
DxO renders it completely different compared to Camera Raw. I have to admit, that I forgot that I had that piece of software on my PC :) The idea of using graduated filters is very nice. SilkyPix renders it again in a completely different fashion and I dare say, worse, with a violet cast.
It seems that with K-3 the telephoto lenses are far more dependant on the position of the sun and atmospheric conditions.
Forum: Pentax SLR Lens Discussion 05-25-2014, 06:57 AM  
Is SDM autofocus better?
Posted By mattt
Replies: 7
Views: 1,095
Muzicantini - the SDM AF accuracy is fine - it is just slow from end to end. If you are shooting an activity which puts your subject matter at a similar distance from you it should perform fine. If you are shooting an activity which causes the AF to rack from MFD to Infinity regularly you will be disappointed because the AF speed is slower than screw drive.

Make sure your expanded AF zone is active.
The hunting of the lens has more to do with the Aperture value than the AF system of the body/lens
Are you using TC's? A 1.4x TC knocks one stop of light off your scene, and a 2x TC knocks two stops.

The other thing to think of is the actual EXIF of your shots. Slow shutter speeds will blur, and might appear to be out of focus but just lack sharpness.

Post a couple of photos with EXIF and identify what lens you are using.

I've posted a couple of examples from my Kr - which arguably is much less featured - the AF-C while not 100% gives acceptible results. All photos where shot in RAW.

Runners in sporting Life 10K in Toronto - AF-C Hi Speed Drive mode - can be found in the album here:






A day at African Lion Safari - a great water park for the kids to cool off Similar to above






And some of my earlier attempts... it is a skill that gets better with practice/experience




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