Forgot Password
Pentax Camera Forums Home
 
Log in or register to remove ads.

Showing results 1 to 25 of 30 Search: Liked Posts
Forum: Pentax DSLR Discussion 03-11-2013, 12:13 PM  
Extension Tube K 100
Posted By LaurenOE
Replies: 8
Views: 1,433
I can't stand the video that was here.
So I took it down.
Forum: Lens Clubs 05-22-2014, 04:24 AM  
The Sigma Lens Club- All lenses
Posted By Pablom
Replies: 3,224
Views: 497,529
a few panos with Sigma super wide 24mm F2.8

View from Ponte Buriano by Pablo Margulies, on Flickr

Ponte Buriano by Pablo Margulies, on Flickr

Ponte Buriano by Pablo Margulies, on Flickr
Forum: Pentax Q 12-18-2012, 02:33 PM  
Original Pentax Q>PK adapter arrives! Mini review.
Posted By snostorm
Replies: 140
Views: 24,697
Hi SonDA5,

It really depends on what you want to do with your Q and adapted lenses.

Here's where I stand -- I want to use the Q mostly for super telephoto and handheld macro shooting with flash (and secondarily as a high quality pocket compact). The very significant advantage of the Pentax adapter with the integral shutter is for the macro stuff.

With a 3rd party adapter, the Q defaults to 1/13 sec shutter speed with flash. This is because it can only use the electronic shutter in the sensor since only Q Quality Line lenses have mechanical shutters (leaf shutters in each lens). When shooting outdoors during daylight, the ambient light overpowers the flash at 1/13 sec, so using flash to freeze either camera shake, subject motion, or both in macro shooting is ineffective. The Q, with adapted dedicated macro lenses has a lot of potential, because the crop factor adds almost 4x perceived magnifcation, and the camera and lens combination is comparatively small and light -- macro shooting is often done in very awkward positions so the light weight is very convenient.

The Pentax adapter helps this situation, which I had tried to work around for the better part of a year. The shutter in the adapter allows me to use external P-TTL flashes with adapted lenses at up to 1/250 sec, which effectively can eliminate ambient light for outdoor daylight handheld macro shooting, and it seems that i can use external manual or auto thyristor flashes at 1/160 sec, which will also accomplish the same effect.

For super telephoto shooting, flash is not often a requirement, so the advantages of a mechanical shutter are a bit more esoteric. Electronic shutters are prone to "rolling shutter effect". This is visible as essentially a bending distortion of a subject that moves laterally in relation to the camera while the shutter is "open". It isn't really evident in most situations because shutter speed is usually pretty high during daylight, but I've seen it as a very subtle rippling in what should be a dead straight line on some shots taken with 3rd party adapters, even at relatively high shutter speeds. Granted, I had to really look for it at very high image magnifications, and it really didn't effect the viewing of the image at normal sizes -- but digital photographers, especially on forums like this can be a particularly picky lot when we choose to be. . .:o If this were the only advantage, I'd stick with the 3rd party ones and be satisfied.

Bottom line, to realize the Q's potential for getting very high perceived magnifications in handheld macros with flash, the high price of the Pentax adapter is worth it to me. I've got over 6x the price of this adapter already sunk into dedicated macro lenses, and though I'm not pleased to have to spend a lot more money to use them as I had originally envisioned, I'm happy that Pentax came up with a solution. Putting a precision shutter mechanism into an adapter is not an easy proposition, and the cost is justified IMO. Also, the aperture adjustment mechanism is easily the most precise and easiest to use of all the adapters that can adjust apertures so far, and the anti internal reflection treatment is also the best I've seen, so it appears they didn't spare much expense in building this adapter. I'm happy they didn't price it higher. . .

Bottom line, extrapolate your possible uses for this camera and adapter. It's better to buy the one that will meet all of your projected needs than to get the less expensive one, then find that it falls short, and have to buy the more expensive one in addition. YMMV of course.

Scott
Forum: Lens Clubs 03-09-2013, 04:11 AM  
SIGMA 10-20mm CLUB
Posted By disco_owner
Replies: 3,844
Views: 934,691
will post another thread before I plan on coming to singapore for a trip :)

1.Palm Beach



2. Marine bay sands - Singapore

Forum: Lens Clubs 02-24-2013, 08:10 PM  
SIGMA 10-20mm CLUB
Posted By dcBear78
Replies: 3,844
Views: 934,691
Woohoo.... A cropped and corrected version of one of my beach shots up there just got accepted into the Exclusive Gallery. Might celebrate my first decent photo and order a canvas print of it.

Forum: Lens Clubs 02-18-2013, 09:03 AM  
SIGMA 10-20mm CLUB
Posted By asp1880
Replies: 3,844
Views: 934,691
10mm, Vibrant colour setting.

Regards,
--Anders.
Forum: Lens Clubs 02-12-2013, 02:03 PM  
SIGMA 10-20mm CLUB
Posted By disco_owner
Replies: 3,844
Views: 934,691
Thank you Chester , That is an awesome B&W shot of the spatial Invasion, Instant Fav for me on Flickr:lol:

ok some more from recent holidays








I call the last shot " The Hands which Held the sun"
Forum: Lens Clubs 02-11-2013, 12:24 AM  
SIGMA 10-20mm CLUB
Posted By disco_owner
Replies: 3,844
Views: 934,691
Shot from a recent trip.






Camel Head Rock by Flameborghini, on Flickr
Forum: Lens Clubs 01-29-2013, 07:53 AM  
SIGMA 10-20mm CLUB
Posted By drivingback
Replies: 3,844
Views: 934,691
A few shots from Pulau Ubin island where I had shot with the Sigma last Saturday. :)


Abandoned Jetty by drivingback, on Flickr


Sunset's Lullaby by drivingback, on Flickr


Finisher by drivingback, on Flickr
Forum: Lens Clubs 07-08-2013, 03:04 AM  
SIGMA 10-20mm CLUB
Posted By disco_owner
Replies: 3,844
Views: 934,691
K5 II s + Sigma 10-20 3.5 + Lee 1.2 ND + Lee 0.9 ND




Welcome to the Sigma 10-20 Club Decoteau and Kcupp.
Forum: Lens Clubs 06-23-2013, 09:08 PM  
SIGMA 10-20mm CLUB
Posted By disco_owner
Replies: 3,844
Views: 934,691
Forum: Lens Clubs 06-19-2013, 06:09 PM  
SIGMA 10-20mm CLUB
Posted By Sagitta
Replies: 3,844
Views: 934,691
Forum: Lens Clubs 06-16-2013, 08:17 AM  
SIGMA 10-20mm CLUB
Posted By kengoh
Replies: 3,844
Views: 934,691
CBD skyline sunset


Skyline sunset from ArtScience Museum by kengoh8888, on Flickr
Forum: Lens Clubs 04-28-2013, 05:44 PM  
SIGMA 10-20mm CLUB
Posted By Sagitta
Replies: 3,844
Views: 934,691
My younger boy is at that age when he just wants to be held, and he'll crawl over and tug on your pant leg until you pick him up. As can be seen here, its kind of hard to say no when he does. <3


You ARE going to pick me up, right? by Jody Roberts, on Flickr
Forum: Lens Clubs 03-26-2013, 05:05 AM  
SIGMA 10-20mm CLUB
Posted By Falke
Replies: 3,844
Views: 934,691
Some sunrise the other morning:



10mm f/9 ISO100 3s - with tripod, 3 stop soft grad ND filter and 3 stop reverse grad ND filter.
Forum: Lens Clubs 07-13-2013, 05:35 AM  
SIGMA 10-20mm CLUB
Posted By disco_owner
Replies: 3,844
Views: 934,691
There are some Awesome Waterfall and Landscape locations around Cairns by the look of things Kcupp:)

Some of the images from this morning

all with Sigma 10-20 3.5 Lee Filters 1.2 ND and 0.9 GND







Forum: Lens Clubs 11-16-2013, 01:12 AM  
SIGMA 10-20mm CLUB
Posted By kengoh
Replies: 3,844
Views: 934,691
Test shot with K3


MBS Laser Show by kengoh8888, on Flickr


Blue Hour Skyline by kengoh8888, on Flickr
Forum: Lens Clubs 11-21-2013, 09:12 PM  
SIGMA 10-20mm CLUB
Posted By Sagitta
Replies: 3,844
Views: 934,691
Double posting, but meh. Shot this one at the same time as the above, but decided to go opposite with the post work. I like how it came out.


The Pier; Old Orchard Beach, Maine by Jody Roberts, on Flickr
Forum: Lens Clubs 01-04-2014, 06:53 AM  
SIGMA 10-20mm CLUB
Posted By dcBear78
Replies: 3,844
Views: 934,691
This might not seem like it but this was 10mm with the Sigma 10-20 f3.5. My original intention was a wider picture but in post I decided to crop it down.


Marina Silhouette by dcBear78, on Flickr
Forum: Lens Clubs 01-01-2014, 12:57 AM  
SIGMA 10-20mm CLUB
Posted By kengoh
Replies: 3,844
Views: 934,691
Year 2013 has ended, this pic is some of the sunrise/sunset shots taken by K5/K5-IIs + Sigma 10-20 in year 2013


Sunrise/Sunset 2013 by kengoh8888, on Flickr
Forum: Lens Clubs 12-30-2013, 02:37 AM  
SIGMA 10-20mm CLUB
Posted By Sinister
Replies: 3,844
Views: 934,691
The siggy is just great:

Forum: Lens Clubs 01-20-2014, 09:23 AM  
SIGMA 10-20mm CLUB
Posted By kengoh
Replies: 3,844
Views: 934,691
Recent sunrise shot with K5-IIs (prefered over K3) for extended bracketing.


Merlion sunrise (2014) by kengoh8888, on Flickr
Forum: Lens Clubs 01-09-2014, 03:24 PM  
SIGMA 10-20mm CLUB
Posted By Sagitta
Replies: 3,844
Views: 934,691
A shot of the recent ice storm. :)





Frozen Messalonskee; Waterville, Maine by Jody Roberts, on Flickr
Forum: Lens Clubs 01-25-2014, 11:22 AM  
SIGMA 10-20mm CLUB
Posted By kengoh
Replies: 3,844
Views: 934,691
Shot with K3, 10mm and long exposure


Skyline + "Runway" by kengoh8888, on Flickr
Forum: Lens Clubs 01-22-2014, 10:20 PM  
SIGMA 10-20mm CLUB
Posted By kengoh
Replies: 3,844
Views: 934,691
Another shot of the Merlion from a different angle, with K5-IIs again.


Another view of the Merlion by kengoh8888, on Flickr
Search took 0.00 seconds | Showing results 1 to 25 of 30

 
Forum Jump


All times are GMT -7. The time now is 07:48 AM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top