Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

Right Angle Viewfinder for DSLR

  • Please log in to reply
6 replies to this topic

#1 petert913

petert913

    Surveyor 1

  • *****
  • topic starter
  • Posts: 1890
  • Joined: 27 May 2013
  • Loc: Portland, OR

Posted 08 November 2018 - 04:50 PM

I have a Canon T3i with the handy articulated LCD screen.   I like to take wide-field astro images with just the camera on a tripod

 

But with the flip out screen, I find it very difficult to find stars that are bright enough to focus on.  Even with the 10x view.

Jupiter works great, but not always around.  Even Vega is a struggle. 

 

I was considering a right angle viewfinder.  That way I could really get my eyeball in there. And the viewing angle would remain comfortable.

Would this be helpful in focusing on a star?  Has anyone had any experience with them?

Attached Thumbnails

  • viewfinder.jpg

Edited by petert913, 08 November 2018 - 04:51 PM.


#2 Starman27

Starman27

    Fly Me to the Moon

  • *****
  • Moderators
  • Posts: 6845
  • Joined: 29 Jan 2006
  • Loc: Illinois, Iowa

Posted 09 November 2018 - 10:33 AM

I have used them for years. They allow you to focus in great detail at any angle on any scope you are using. 



#3 Jerry Lodriguss

Jerry Lodriguss

    Vendor

  • *****
  • Vendors
  • Posts: 6655
  • Joined: 19 Jul 2008
  • Loc: Voorhees, NJ

Posted 09 November 2018 - 12:19 PM

I've used them for years also, and I don't recommend them. They are bad enough on a camera on a real scope, on a wide-angle lens it's going to be worse.

 

Here's what you need to do:

     - Find the brightest object in the night sky and focus on it with Live View at 10x magnification (many tricks at this link).

     - Tape the focus down.

     - Re-frame the camera to what you want to shoot.

 

Jerry


  • pgs/sdg likes this

#4 WarrenK

WarrenK

    Sputnik

  • -----
  • Posts: 42
  • Joined: 18 Apr 2018
  • Loc: Anacortes, WA (Summer), Loreto BCS (Winter)

Posted 10 November 2018 - 12:41 PM

Consider the Hoodman Loupe.

 

Warren



#5 Alen K

Alen K

    Viking 1

  • -----
  • Posts: 517
  • Joined: 25 Nov 2009

Posted 10 November 2018 - 07:41 PM

Focusing through the optical viewfinder, even with a magnifier, has never been a good idea. It's just not precise enough for most people to do it with any consistency (I'm sure some eagle-eye will say they never had a problem). It's hard to beat LiveView at 10x.
  • ccs_hello likes this

#6 ccs_hello

ccs_hello

    Cosmos

  • *****
  • Posts: 9884
  • Joined: 03 Jul 2004

Posted 11 November 2018 - 09:30 AM

Not a precision solution for astro applications.



#7 james7ca

james7ca

    Fly Me to the Moon

  • *****
  • Posts: 5834
  • Joined: 21 May 2011
  • Loc: San Diego, CA

Posted 11 November 2018 - 11:44 AM

I agree with most of the posts so far. I have a right angle viewfinder for my Nikon DSLRs and it even has a built-in 2X magnifier but it doesn't really help when focusing on stars.

 

Actually, if you want something that will actually help think about getting a small, battery-powered, external LCD that can run through the camera's HDMI output. These small monitors have gotten pretty cheap in the last few years, here is one example from Amazon:

 

  http://a.co/d/0zAYR54

 

I am NOT specifically recommending this particular model, it's just an example from the range of products that are available. You need to do your own homework looking at issues like brand reputation, battery support, LCD panel resolution, etc. Note that you have to be particularly careful when evaluating the native resolution of the LCD panel itself as many products will state 1920 x 1080 support when the LCD itself may only be something like 1024 x 600 (they basically rescale the input to the panel resolution). Having a lower resolution panel is not necessarily a fatal flaw as the Lilliput display that I purchased about 5 years ago works fine with 1080p inputs but the display itself if fairly low resolution (but even at that it helps when focusing and viewing the liveview from the camera).




CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics