Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
07-12-2019, 02:24 AM   #1
New Member




Join Date: Jul 2019
Posts: 4
In live view mode with a tripod with a series of frames, they are of different sizes

Help! When shooting with a tripod (column) in live view mode on the pentax 645z and a 120mm 1: 4 macro lens with a series of shots, the object turns out to be a dimly sized one!
I shot without live view with a raised mirror. Just in live view mode with a tripod. I have a very massive tripod column, which in theory should exclude any vibration. However, in the end, if I want to shoot several frames with sharpness in different places (to make stacking later), then the objects in the frame are of different sizes (the object does not move and the camera too). Please help with solving this problem!

07-12-2019, 02:32 AM   #2
Senior Moderator
Loyal Site Supporter
Loyal Site Supporter
BigMackCam's Avatar

Join Date: Mar 2010
Location: North-East of England
Posts: 12,748
Welcome to the forums, Yuri

Could you post two or three captured frames to illustrate what you're describing? It would be very helpful for us in getting to the bottom of your problem.

The behaviour you describe sounds to me like "focus breathing", where the angle of view changes with the focus distance. But I confess I'd be surprised if it was noticeable between multiple shots focused at only slightly different distances for the purposes of stacking...
07-12-2019, 02:45 AM   #3
New Member




Join Date: Jul 2019
Posts: 4
Original Poster
Here is an example of what I'm talking about. Focus on different frames for subsequent stacking. It happens that I take pictures on the 3D table (and do not change the focus point, the object simply rotates around the axis) and stacks with the same problem.
07-12-2019, 02:47 AM   #4
New Member




Join Date: Jul 2019
Posts: 4
Original Poster
Here are the photos

Attached Images
       
07-12-2019, 03:43 AM - 1 Like   #5
Pentaxian
swanlefitte's Avatar

Join Date: May 2015
Location: New Orleans
Photos: Gallery
Posts: 2,245
You need a rail to move the camera back. 1:1 is at the minimum focus distance. Since the lens extends to reach 1:1 as you change focus you are extending your distance and no longer at 1:1.
A work around is to frame at the farthest focus point at 1:1 with what you want in frame. Then as you focus on other parts it gets bigger so you can crop on those frames. Distortion can sometimes be a problem, less if you don't start at 1:1 but maybe 1:1.2

Edit by bigger I meant more stuff in frame. In stack it can resize and that extra can be cropped.

Edit more on focus rail and macro.
www.macrophotobug.com/two-macro-focus-rails-compared/

Last edited by swanlefitte; 07-12-2019 at 03:59 AM.
07-12-2019, 03:57 AM   #6
Site Supporter
Site Supporter




Join Date: Feb 2015
Photos: Gallery | Albums
Posts: 6,516
The stacking software should deal with slight change of subject size/perspective when moving the focus.
07-12-2019, 04:06 AM   #7
New Member




Join Date: Jul 2019
Posts: 4
Original Poster
Thanks a lot! I'll try to do this
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!
camera, column, frames, mode, object, pentax 645z, pentax fa 120mm, pentax help, photography, rised mirror, series, sizes, stacking, tripod, troubles with 645z, troubleshooting, view, view mode
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
K50 Exposure is much different from live view to view finder neptune Troubleshooting and Beginner Help 23 02-10-2018 09:07 PM
live view noise and smc dfa 100mm f2.8 macro lens not focusing in live view tommygunn84 Troubleshooting and Beginner Help 7 11-24-2016 08:59 PM
Typical live view humming, when not in live view. lightsource Pentax K-1 8 05-05-2016 02:20 AM
Do different lenses have different minimum temperatures they can operate at? Sagitta Troubleshooting and Beginner Help 10 05-08-2015 09:09 AM
K5 Live View: Live Exposure Adjustments Visible in "M" Mode? godwinaustin Pentax K-5 6 08-13-2013 08:11 PM



All times are GMT -7. The time now is 04:41 PM. | 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