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Forum: Post Your Photos! 12-15-2014, 04:07 PM  
Macro Macro Abstracts
Posted By shooz
Replies: 42
Views: 3,606
Gotta love that last one. Gorgeous pastels.

Here's one in a more neutral color motif.


Forum: Post Your Photos! 11-13-2014, 01:37 PM  
Landscape Dyffryn Mawr
Posted By bychan
Replies: 24
Views: 1,586
This is part of my daily (or nightly), dog walking route. Known locally as Dyffryn Mawr (roughly translated as large valley), it's a great example of a glaciated V-shaped valley.

It was very gloomy when these were taken, with the camera perched on a gate's pillar.

K5 and Sigma 18-50 and Cokin GND.

1


2


Regards
bychan
Forum: Post Your Photos! 11-12-2014, 03:04 PM  
Night Different Jerusalem
Posted By Pablom
Replies: 5
Views: 814
Taken from the light rail bridge in Jerusalem, camera over strap over railing.
C&C from the experts here in the forums is very welcome.


Busy Jerusalem
by Pablo Margulies, on Flickr
Forum: Post Your Photos! 11-11-2014, 12:54 PM  
Abstract Not a cloud in the sky
Posted By MSL
Replies: 26
Views: 1,449
that would fall under the emulsions guess earlier since detergents are used to stabilize them.

another hint (sorry I'm enjoying this too much to quit) - the white stuff disappears completely with time
Forum: Post Your Photos! 11-11-2014, 11:10 AM  
Abstract Sunset Giraffe
Posted By johan kruger
Replies: 13
Views: 556
Forum: Mini-Challenges, Games, and Photo Stories 11-11-2014, 11:00 AM  
Alphabet Race (a very quick game)
Posted By crewl1
Replies: 45,867
Views: 1,717,874
Should also be F for freaky!

F Fangs

Forum: Pentax SLR Lens Discussion 11-11-2014, 10:58 AM  
Wide angle on a tightish budget!!!
Posted By jk333
Replies: 28
Views: 2,103
I vote for a used 16-45; here you can get one for $168 - https://www.keh.com/241816/pentax-16-45mm-f-4-smc-da-ed-al-k-mount-autofocus...ensor-dslrs-67

My logic is, you mine as well get a wide(ish) lens the can also cover the normal range at the same time. The 16-45 is sharp at almost all settings and the image quality will be better than many competing zooms. It's also cheaper and lighter than the f2.8 zooms.

My honorable mentions are a used 18-55 or for a prime, the plastic DA 35. 35 is a good focal length for landscapes. Most landscapes are taken in the 25-35mm range on a crop sensor. Many people think they need a wide angle, like 15 or 18mm but often that's not best for landscape photos.
Forum: Post Your Photos! 11-11-2014, 09:16 AM  
Abstract Not a cloud in the sky
Posted By MSL
Replies: 26
Views: 1,449
Anyone want to guess at what you are looking at? It isn't the sky.
The images have been cropped and sharpened, but no color corrections were applied.

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2.

3.

4.
Forum: Post Your Photos! 11-10-2014, 09:52 PM  
Macro Low key Spider
Posted By johan kruger
Replies: 12
Views: 447
Forum: Post Your Photos! 11-10-2014, 08:54 PM  
Nature Sun ray at the Nature Center
Posted By nicoprod
Replies: 5
Views: 815
Sun ray at the Nature Center
Forum: Flashes, Lighting, and Studio 11-11-2014, 08:58 AM  
Flash sync speed.
Posted By maxfield_photo
Replies: 63
Views: 4,715
The easiest way to understand the problem is to get out there and try it yourself. Go out on a bright sunny day with a friend, and bring your camera and a HSS capable flash unit. Now, put the sun behind your subject to give a nice glow to the hair, and to keep him/her from squinting. Put your camera in Shutter priority and set, oh 1/4000th as the shutter speed, and take a shot. That's about the shutter speed you'd like to use to get a nice portrait, but obviously you won't get a flash and your friend will be completely backlit.

So now switch over to manual and start stopping down your lens until the point where you can activate your flash. 1/4000th>1/2000th>1/1000th>1/500th>1/250th>1/180th That's 4 and a half stops (1/180th is half a stop under 1/250th by the way) So if you started at f/1.4, your lovely portrait will now be at an uninspiring f/6.7.

Now that you are at (or below) your max sync speed, you can begin to compress the dynamic range of the scene with a flash and get some blue back into those blown out skies. Unfortunately your lens is at f/6.7 which has reduced your guide number from 50 meters down to 7.5 meters. Now that's at full power, but for reasons that I won't go into (but you can read up on it), you really don't want to shoot at full power if you can help it. You really want to be at quarter power or less. So that brings your working distance down to 3.7 meters. Did you want to add a softbox to make those shadows a little less harsh? That will cost you another stop. Are we done yet? Nope. The light from the flash is cooler than the ambient light, so that will require maybe a 1/2 CTO gel to keep your subject from looking cyanotic, that's another half a stop. So our final working distance is about 2.2 meters, hope you only wanted a headshot.

BUT, you say, there's always High Speed Sync! Well, try it. As soon as you cross the max sync barrier, your guide number drops to about a quarter of the full power of the flash. As you crank your shutter speed higher to cut out more ambient light, more and more light from the flash is wasted bouncing off the ever-widening shutter curtains, and very little actually makes it to the sensor. By the time we get back up to our original 1/4000th, you working distance is about the end of your lens, so hope you brought a macro lens (hey, they're good for portraits... of nose hair)

Ok, so what is the point? Well as you have observed some users complain that Pentax has a slower max sync speed than Canon or Nikon, these folks are also missing the point. The point is that Canon and Nikon's sync speeds are also too slow, but when trying to balance ambient light, every stop counts. Ideally there would be no such thing as max sync speed, you'd be able to sync all the way up to the camera's maximum shutter speed. There are some cameras, like the Nikon D70s, that can do that by using a hybrid electronic/mechanical shutter, but there are some problems getting that trick to work with a CMOS sensor. Leaf shutters in lenses would be a good compromise, but there are far too few of those out there and none for the K-mount. Those who say 1/180th should be good enough are obviously not trying to take the same types of images as those who advocate for higher sync speeds.

[edit: Oh, almost forgot, because of Pentax's implementation of HSS, you need a HSS flash attached to the hotshoe. This means that unless you have multiple flashes, you won't be able to stand back with a telephoto lens, you need to be close to the subject. Don't get me started on the Pentax flash system]
Forum: Mini-Challenges, Games, and Photo Stories 11-11-2014, 07:33 AM  
Thematic The Macro Flower Club
Posted By Mr Bassie
Replies: 1,559
Views: 103,089
_IGP7753.jpg by DWO630, on Flickr

K-01 not sure what lens. Might be a M100 Macro.
Forum: Flashes, Lighting, and Studio 11-11-2014, 02:58 AM  
Flash sync speed.
Posted By LensBeginner
Replies: 63
Views: 4,715
I won't shoot you down, I promise ;) but I'm struggling to understand here...
The point of time in which you capture the splash (and hence the moment in the "life cycle" of the splash itself) should have only to do with when you press the shutter...
Then again if you exclude natural light (dark studio, small aperture, ND filter etc...) the only factor that affects movement blur is flash duration, and that is very very short, especially on lower power settings...
Forum: Mini-Challenges, Games, and Photo Stories 11-10-2014, 05:12 PM  
Thematic The Macro Flower Club
Posted By stormtech
Replies: 1,559
Views: 103,089
This one needed a tad more depth of field.....

Untitled by sterling2424, on Flickr
Forum: Post Your Photos! 11-08-2014, 07:33 AM  
Machinery Campagnolo shifters
Posted By LensBeginner
Replies: 7
Views: 838
Some vintage levers...

campagnolo by LensBeginner, on Flickr
Forum: Photo Critique 11-08-2014, 01:56 PM  
Nature Seedpod
Posted By BrianR
Replies: 27
Views: 2,016
I'm always afraid it's just a lack of imagination cop-out to toss an object on a simplistic background and I do it pretty often so I'm looking for any general feedback here. Is it an interesting enough object to stand out of context from nature? Does it give a sense of exploding? Does the tone of the backdrop compliment the pod well? Does the floating nature feel just strange?

Thanks for any input:).

It's from common milkweed, Asclepias syriaca, a host plant for Monarch butterflies when they're larva (and a few other things:)).



Milkweed Seedpod by Jelly Brain, on Flickr
Forum: Lens Clubs 11-08-2014, 10:05 AM  
The Sigma Lens Club- All lenses
Posted By womble
Replies: 2,295
Views: 355,507
K-3, Sigma 17-70mm f/2.8-4.


Fishermans cabin par Kris Lockyear, on ipernity
Forum: Mini-Challenges, Games, and Photo Stories 11-07-2014, 04:58 PM  
"I Spy" Photo Challenge
Posted By Bud
Replies: 30,956
Views: 1,414,383
I spy eyes with catchlights…

Forum: Post Your Photos! 11-07-2014, 01:34 PM  
Black & White Full Steam Not Ahead
Posted By rfaucher
Replies: 2
Views: 941
Part of the bridge for an old tugboat on static display in Port Burwell, Ontario.

This is a DNG file from the K-3, processed in lightroom and then some burning done within lightroom as well.
Forum: Post Your Photos! 11-07-2014, 10:41 AM  
Black & White highway to hell
Posted By olegp
Replies: 12
Views: 604
Forum: Post Your Photos! 11-06-2014, 05:43 PM  
Macro Friday fly
Posted By old4570
Replies: 8
Views: 480
Forum: Photo Critique 11-06-2014, 09:41 PM  
Abstract chains
Posted By Goosey
Replies: 1
Views: 404
gday guys
back to stuff in old sheds thought this is a little different
let me know what you think
thanks goosey
Forum: Welcomes and Introductions 11-07-2014, 02:04 AM  
Hello forum!
Posted By gor80
Replies: 7
Views: 453
Good day.
In this topic, I want to present themselves and meet with members of the club.
I registered a long time ago, but I did not create threads in this discussion
Now, with the intensification of competition - I decided on the site more actively communicate and present their photos.
My name is Igor Petrov, I am 34 years
I live in Russia, my city is called Balashikha - is 7 km from Moscow.
I work professionally for more than 4 years, namely commercial shots.
On a forum I got thanks to Google search - I enjoy manual lenses and old at the time very actively used them.
Shoot on Canon and PENTAX, but lately my faithful friend - PENTAX lays aside.
From its hand-lens, I can boast of
takumar fisheye 17mm 4.0
Olympus Zuiko om 100 / 2.0
Soligor 135 / 1.8
super takumar 50 1.4
takumar 135 2.5
Fujinon EBC 50 1.4
this is my favorite lens
part of my work you may have seen in various topics in the forums.

I like this friendly forum, there are very good people, this is true.

---------- Post added 11-07-14 at 02:23 AM ----------




Forum: Post Your Photos! 11-07-2014, 02:01 AM  
Black & White like a movie frame :)
Posted By olegp
Replies: 4
Views: 301
Forum: Post Your Photos! 11-07-2014, 02:21 AM  
Machinery Vintage but not so shiny!
Posted By robjmitchell
Replies: 17
Views: 1,639
Came across this lovely old beast on the nature strip. Sporting a bit of rust so I thought I'd try to give a bit of shine back with Some PP love.
Cars are not my normal subject so any tips on photography are appreciated.


Vintage Car-1 by Robjmitchell, on Flickr


Vintage Car-2 by Robjmitchell, on Flickr
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