Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
07-27-2013, 04:18 PM - 2 Likes   #976
Site Supporter
ramseybuckeye's Avatar

Join Date: Apr 2009
Location: Elida, Ohio
Photos: Gallery | Albums
Posts: 8,114
QuoteOriginally posted by cali92rs Quote
Onandanga Caves here in Missouri (these were handheld, but they offer once a month photography tours which you can set up your tripods and take as long as you want...i am really interested in that. All my shots had to be at ISO 6400).
Back when I first got my K20D one of the first places I took it to was Mammoth Cave. I realize how difficult it is to shoot in a cave, you did very well!

cali92rs
Those both get a "wow" from me, excellent.











Last edited by ramseybuckeye; 07-28-2013 at 05:44 AM.
07-27-2013, 09:30 PM   #977
Site Supporter




Join Date: Jun 2013
Location: Newcastle
Photos: Gallery | Albums
Posts: 1,443
For Jim and those who are interested - the test results are in!

Conditions:

Lens: Meyer Optik 300mm f4
Weather: Partly cloudy and 20 degrees celsius. Sun at 45 degrees to lens and in front. Very light breeze. Sublime!
Subject: a Eucalypt flower at about 4 metres
ISO: 100 for all photos
Av mode

All photos taken on a tripod.

No post processing

Order of photography:
- K01 (no tele)
- K30 (no tele)
- K01 (tele)
- K30 (tele)

Results for the K01

Best sharpness was achieved at f4 and f5.6. Stopping down beyond F5.6 was very hard to handle even on a tripod. Much can be said about having a good grip!



K01 f4



K01f5.6

Photos taken with the teleconverter are clearly not as sharp. There appears to be some halo effect around the flowers filaments.



Results for the K30

Best sharpness was at f8 - bokeh was great too. F8 seems to be the best compromise between sharpness, bokeh and shutter speed. You choose which is the best.



K30 f4



K30 f5.6



K30 f8

Focusing when stopped down was much easier than the K01 - handling! I could manage a f22 shot with relative ease.

Again the images taken with the teleconverter showed reduced sharpness and halo effect.




My future use of the big Meyer Optik will be as follows:

- Shoot at F8 for action shots, or lower if light is not good.
- K30 body.
- Tripod if shooting above f11 no matter what the lighting conditions.

My lovely K01 clearly has trouble from a handling perspective and may only get used with the Meyer Optik 300mm if the conditions are really bright and I want to have a little fun.

Mark
Attached Images
View Picture EXIF
PENTAX K-01  Photo 
View Picture EXIF
PENTAX K-01  Photo 
View Picture EXIF
PENTAX K-01  Photo 
View Picture EXIF
PENTAX K-01  Photo 
View Picture EXIF
PENTAX K-30  Photo 
View Picture EXIF
PENTAX K-30  Photo 
View Picture EXIF
PENTAX K-30  Photo 
View Picture EXIF
PENTAX K-30  Photo 
View Picture EXIF
PENTAX K-30  Photo 

Last edited by Wild Mark; 07-28-2013 at 01:24 AM.
07-27-2013, 09:37 PM   #978
Senior Member




Join Date: Jun 2010
Photos: Albums
Posts: 127
Some scenery from Montreal. Still testing my K30 + 16-45.
Anyone knows how to correct for perspective distortion using LR3 ?

Thanks
Attached Images
   
07-28-2013, 04:52 AM   #979
Site Supporter
JimJohnson's Avatar

Join Date: Jan 2012
Location: Lake Superior - Michigan
Photos: Gallery
Posts: 2,164
teleconverter versus cropping

QuoteOriginally posted by Wild Mark Quote
For Jim and those who are interested - the test results are in!
So to summarize... In the future will you mostly shoot without a teleconverter and crop, or shoot with a teleconverter so you don't have to crop?

07-28-2013, 05:21 AM   #980
Site Supporter




Join Date: Jun 2013
Location: Newcastle
Photos: Gallery | Albums
Posts: 1,443
QuoteOriginally posted by JimJohnson Quote
So to summarize... In the future will you mostly shoot without a teleconverter and crop, or shoot with a teleconverter so you don't have to crop?
Oh yes, no question about that. The teleconverter is very unnecessary to say the least.

It was a great little experiment and one worth undertaking if your interested in knowing your equipment a little better.

Thanks Jim for the challenge.

Mark
07-28-2013, 02:11 PM   #981
Pentaxian
littledrawe's Avatar

Join Date: Jan 2010
Location: Red Rock
Photos: Gallery | Albums
Posts: 2,434
QuoteOriginally posted by JimJohnson Quote
So to summarize... In the future will you mostly shoot without a teleconverter and crop, or shoot with a teleconverter so you don't have to crop?
QuoteOriginally posted by Wild Mark Quote
Oh yes, no question about that. The teleconverter is very unnecessary to say the least.
It was a great little experiment and one worth undertaking if your interested in knowing your equipment a little better.
Thanks Jim for the challenge.
Mark
What tripod and head were you using? What teleconverter? Did you use 2 second timer or a cable release? There are a number of things that could have made the teleconverter shots come out poorly which would be more visible with the increased magnification. Or if you are using an inferior converter it has no chance in the first place of being comparable to shots without it.
07-28-2013, 02:18 PM   #982
Site Supporter
JimJohnson's Avatar

Join Date: Jan 2012
Location: Lake Superior - Michigan
Photos: Gallery
Posts: 2,164
Granted I am generalizing when I state my bias against teleconverters in the digital world.

There are good teleconverters, especially those meant to be matched with a specific lens. However, good teleconverters are not particularly inexpensive. And beginners in particular tend to look for the inexpensive type as a salvation against buying glass with a longer focal length. In a number of cases, a good teleconverter is close enough to the cost of a used longer focal length lens that the money would be better spent on the longer lens. While both well rated, the Pentax AF 1.7X for example, sells for US$400-$500 and the Kenko PZ 1.5X sells for US$200-$300. (those numbers came just now from a quick search via Google).
07-28-2013, 03:49 PM - 1 Like   #983
Junior Member




Join Date: Jan 2013
Posts: 31



07-28-2013, 05:04 PM   #984
Senior Member




Join Date: Jan 2013
Location: Reading, PA
Photos: Gallery | Albums
Posts: 234
A couple of my favorite shots from the last week or so.

First a selfie.



Oldest daughter and me trying to use the pop up flash for fill. I really want to get at least a 560 II or III



Well, just hanging.












This underpass have been the home of some interesting chalk drawings as of late. Was lucky to pass by with cam on hand before it got wiped out. Red is what they call the city of Reading, PA on the streets.

07-28-2013, 08:40 PM   #985
Site Supporter




Join Date: Jun 2013
Location: Newcastle
Photos: Gallery | Albums
Posts: 1,443
QuoteOriginally posted by littledrawe Quote
What tripod and head were you using? What teleconverter? Did you use 2 second timer or a cable release? There are a number of things that could have made the teleconverter shots come out poorly which would be more visible with the increased magnification. Or if you are using an inferior converter it has no chance in the first place of being comparable to shots without it.
Littledraw

I used a fairly flimsy tripod so the stability it offered was questionable (thanks for raising that point). Also, the teleconverter used is a Telmac X2 with M42 mount - I have no idea of its pedigree as I acquired it with a bunch of other camera gear without being interested in it in the first instance.

Mark
07-28-2013, 10:28 PM   #986
Junior Member
JustinThomason's Avatar

Join Date: Jul 2013
Posts: 26
I just got my K-30 a couple of weeks ago, so I'm still playing around with it. So far just some shots around my house. All in all, I'm very impressed with it. I've not really been using anything other than full manual, but I'm starting to play with some of the other options. Right now I just have the stock 18-135mm WR zoom.
Attached Images
   
07-29-2013, 12:51 AM - 3 Likes   #987
Senior Member
Doctor X's Avatar

Join Date: Sep 2012
Location: Bucharest
Photos: Gallery
Posts: 152
From the weekend:



07-31-2013, 11:25 PM - 1 Like   #988
Senior Member




Join Date: Jan 2013
Location: Reading, PA
Photos: Gallery | Albums
Posts: 234
Was marking photographs for deletion in LR and found this one self portrait. I thought it would serve well as the high contrast BW kinda photograph. Here it is.


08-01-2013, 07:43 AM - 2 Likes   #989
Forum Member




Join Date: Nov 2012
Posts: 60
Just a few shots from earlier today
Attached Images
     
08-01-2013, 07:53 AM   #990
Senior Member




Join Date: Jan 2013
Location: Reading, PA
Photos: Gallery | Albums
Posts: 234
QuoteOriginally posted by nfraser Quote
Just a few shots from earlier today
Love that middle shot. For some reason that last one is good but there is a leave that keeps attracting my attention on the right of the frame. The first one is good to, but I prefer that middle one! Keep it up man!
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
1st, april, color, flickr, friends, fun, ice, image, jun, k-30, k-30 photos, k-50, lens, lol, macro, nature, pentax, pentax k30, pentax k50, picture, pm, post, shots, story, tamron70-300mm, week, woods
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Post your 85mm 1.4 Photos! (1.4 ONLY!) PentaxForums-User Pentax SLR Lens Discussion 40 05-08-2014 04:33 PM
Post your Q photos/videos here. Clicker Pentax Q 2 02-08-2012 08:06 PM
Thematic Post your Ricoh photos! johnmflores Mini-Challenges, Games, and Photo Stories 14 07-04-2011 01:01 AM
Where do I post photos that need help? KierraElizabeth Site Suggestions and Help 2 01-08-2011 10:45 AM
Travel 10 photos accepted in PPG (10 photos, larger post) tcom Post Your Photos! 22 01-22-2010 07:37 PM



All times are GMT -7. The time now is 04:05 AM. | See also: NikonForums.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