Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
06-12-2020, 05:31 PM   #1
Pentaxian
swanlefitte's Avatar

Join Date: May 2015
Location: New Orleans
Photos: Gallery
Posts: 3,231
Why can i do macro without my reading glasses?

I can't read a newspaper but if i look through my camera it is crystal clear. I don't have to change the diopter from distance to close focus. When it is sharp to me, the picture comes out sharp. If i change to live view i can't see clear.

06-12-2020, 06:05 PM   #2
Pentaxian
photoptimist's Avatar

Join Date: Jul 2016
Photos: Albums
Posts: 4,424
The lens focuses the image of the subject onto the focusing screen. No matter whether it's macro or infinity focusing setting, the focused image is sharp on the focus screen.

The focus screen image is relayed by the pentaprism through the viewfinder optics and into your eyeball. Those viewfinder optics can have a fixed focus setting (the diopter setting that you chose) and they don't have to change because the distance from the focus screen to your eyeball does change.
06-12-2020, 06:51 PM   #3
Pentaxian
swanlefitte's Avatar

Join Date: May 2015
Location: New Orleans
Photos: Gallery
Posts: 3,231
Original Poster
QuoteOriginally posted by photoptimist Quote
The lens focuses the image of the subject onto the focusing screen.
Ok thanks. So i am viewing a camera obscura image, i am not looking out the lens.
It is really just a more live, live view.
06-12-2020, 07:01 PM   #4
Moderator
Not a Number's Avatar

Join Date: Mar 2012
Location: Venice, CA
Posts: 7,190
As I recall the virtual image on the focus screen is set to appear as at infinity to the eye. You can test this by focusing the camera lens on an object at infinity. Keep with both eyes open and the object should be in focus for both eyes.

06-12-2020, 09:21 PM - 1 Like   #5
Forum Member




Join Date: Nov 2012
Photos: Albums
Posts: 71
I remember that in Modern Photography camera tests, among the specs they measure was the "apparent viewing distance" of the focusing screen, and if I remember well it use to be around a meter, depending on the tested camera.
06-12-2020, 10:08 PM   #6
Pentaxian
Wheatfield's Avatar

Join Date: Apr 2008
Location: The wheatfields of Canada
Posts: 12,294
QuoteOriginally posted by CarlosU Quote
I remember that in Modern Photography camera tests, among the specs they measure was the "apparent viewing distance" of the focusing screen, and if I remember well it use to be around a meter, depending on the tested camera.
This is what I have read as well. If you can see something a meter away from you clearly, then you should be able to see the screen clearly as well.
06-13-2020, 02:16 AM   #7
Pentaxian
35mmfilmfan's Avatar

Join Date: Oct 2016
Location: Norfolk, UK
Posts: 1,433
I am extremely myopic - anything over about nine inches away starts to get blurry, and a walk though woodland sans lunettes is like an Impressionist painting for me. I wear distance glasses when using the viewfinder (with magnifier), but for Live View (on a tripod) I find it easier with no spectacles. This does introduce its own problems of aiming originally, then ensuring the subject is framed. But then, if life was easy, it wouldn't half get boring !
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!
change, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Yellow glasses contrast at night, so why not a yellow filter for better AF? Rexlawyer General Photography 4 06-05-2019 06:42 PM
A way to shoot without having to wear glasses. ASheffield Pentax Camera and Field Accessories 13 09-19-2013 05:24 PM
Ya can't spell Ryan without Ayn, and ya can't spell Romney without Money. Who scripte jeffkrol General Talk 8 08-21-2012 05:13 AM
Reading glasses/computer glasses?? larryinlc General Talk 16 07-31-2012 04:44 PM
When you use reading glasses gawan Photographic Technique 9 07-29-2008 10:45 AM



All times are GMT -7. The time now is 02:29 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