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 Replies: 9 / Views: 1,766 |
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Pillar of the Community
2087 Posts |
I have been enjoying the novelty of being able to focus using my lap tops 15" screen for focusing. As yet I am not as familiar with the soft ware to get a good work process going so for now the work flow is much slower than my previous methods. One thing surprised me. With my camera and the soft ware ( Capture one Pro for sony) When the picture is taken via the lap top the picture is saved by the camera to the laptop without a copy being retained on the Cameras SD card.
Is this usual with other tethering systems?
The reason I ask is there is a minor niggle with this. The cameras LCD screen and View finder are much higher resolution than the Lap tops( brand new). When I used Sony's basic tethering software( no live view) I was able to view the photo at High resolution and check the focus was nailed at 12 times magnification before moving onto the next subject
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Pillar of the Community
United States
9395 Posts |
Quote:
Is this usual with other tethering systems?
When I take a picture with the Canon T6s it bypasses the SD card in the camera and goes directly to the computer hard drive. Maybe there's a setting somewhere to change this, but not using the SD card is fine by me. Also, with Canon live view you can zoom in 5X or 10x and focus using a small part of the frame. 5X Live view is good enough to reliably show a difference in focus of about 0.25 to 0.5mm at f/8 and 0.5x (according to my dial indicator depth gauge). The Zerene Stacker DOF tables show the DOF of 1.3mm in this case, and these tables are supposed to be very strict (based on diffraction, etc.). |
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Pillar of the Community
 2087 Posts |
Thanks so My experience was "normal".
As noted here and in another thread I am just learning a completely new process. From other comments, regarding tethering and better work processes, I expect that as I become more proficient with the software I will adapt and probably come to prefer this technique.
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Pillar of the Community
 United States
4037 Posts |
With Canon, you can choose to save to camera memory card, PC, or both. You can also "zoom" to 100% or 200% pixel view for critical focusing. The full-sensor Live View image is not really sharp enough IMO to do critical focusing, so zoom view is necessary.
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Pillar of the Community
2087 Posts |
I expect that phase one will have something similar ( both SD card saving and zoom) with Capture one soft ware. It was developed for medium format tethering so I would be surprised if it isn't a facility. I suspect the canon LCD screens and optical view finders really aren't up to the LCDs and OLED view finders on equivalent mirrorless cameras
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Pillar of the Community
 United States
4590 Posts |
Most monitors are aimed for 1920 x 1080 HD movies, but the actual image from the camera is 3 or 4 or even 5 thousand by something.
You want your zoom to be such that you are looking 1:1 (as it were) at a chunk of the image so that it fills whatever portion of the 1920x1080 screen. You lose pixels to the window border, controls, etc. So the actual image window is less. You want to zoom to whatever % that works out to be. That's a function of the program and computer OS.
Anything else and you get interpolations between image and screen.
-----Burton 50+ year / Life / Emeritus ANA member (joined 12/1/1973) Life member: Numismatics International, CONECA Member: TNA, FtWCC, NETCC, EveryCountry (online) coin club Owned by three cats and a wife of 40+ years (joined 1983) Author: 3rd Edition of the Sample Slabs book, https://www.sampleslabs.info/ |
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Pillar of the Community
2087 Posts |
That is most illuminating. I had been using a separate HD monitor and was quite disgusted at the resolution compared to the cameras output. Likewise I was, erroneously I no know, expecting better performance from the new lap top
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Pillar of the Community
United States
4590 Posts |
Only in the last couple months are you starting to see "4K" monitors showing up. Otherwise, pretty much everything you can buy is 1920x1080.
Most laptops have slightly smaller panels, e.g. 1600x900, which gives you something like 768 or so pixels high after you take out the window border, menus, controls, etc.
The resolution on my tablet photos are 3264x2448... so a little over 3 pixels of image get interpolated as each pixel of display.
However, you lose a lot less of the 1600, maybe 1525. So the ratio in that axis is different, maybe 2.something.
Check the capture program and see if there is an option to show a section at 100%.
-----Burton 50+ year / Life / Emeritus ANA member (joined 12/1/1973) Life member: Numismatics International, CONECA Member: TNA, FtWCC, NETCC, EveryCountry (online) coin club Owned by three cats and a wife of 40+ years (joined 1983) Author: 3rd Edition of the Sample Slabs book, https://www.sampleslabs.info/ |
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Pillar of the Community
2087 Posts |
today I took a bit of time to take some photos using tethering. For now I am a lot slower than I used to be. I found the zoom and it does help considerably. However I ended up being Lazy and used my one native macro lens and let it auto focus. I can see some advantages for bulk photographing coins. the Capture one program works well, At the moment I am only using it for tethering not editing, the camera and Lens work so well together I just have to set the white balance and the photos come out of the camera requiring little editing. I use Adobe Elements to circular crop coin photos and Capture one seamlessly transfers the photos to the specified files and automatically opens Elements( now that I have set it to do that. Those who have been tethering for a while will know this well: I need to get a mouse for the Lap top as using the laptops touch pad just slows every thing down. I have one niggle Capture one doesn't have my lens profile....Light room has it( so I understand) so I have no idea why Capture one doesn't have the lens profile.
Edit: I found out why there is no lens profile..... there actually is it is with the RAW data of each photo. Just another part of the learning curve. I have to access another menu to use it. One thing I am disappointed with both the camera and the HD monitor I used allowed focus peaking and Zebra. I have really come to rely on those functions. They are not available on the lap top....luckily the cameras rear screen still operates during while tethered so I can use focus peaking and Zebra on the camera...but it seems kind of silly going to all the trouble of setting up the tether only to still have to revert to the cameras screen for that crucial function.
Do( and which) DSLR's have focus peaking and Zebra?
Edited by austrokiwi
03/12/2016 12:46 am
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Valued Member
United States
67 Posts |
FWIW, the Canon tethered mode does not have either. It does show a real time histogram (overall or rgb), which of course can be used to spot overexposures, but not what I presume "zebra mode" would show.
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Replies: 9 / Views: 1,766 |
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Posted 03/10/2016 12:46 am
