Search results for 'back focus' - page 1882
Focusing issues on Pentax cameras
The most accurate way to focus is to use live view. Either using the Contrast-Detect AF system, or by manually focussing and using the screen zoomed at 100%. This is because you are then detecting the focus point directly on the cameras sensor. No it isn't :shock: It can be quite good if you fo...
Posted by Algernon on 26/07/2017 - 12:04
Focusing issues on Pentax cameras
The most accurate way to focus is to use live view. Either using the Contrast-Detect AF system, or by manually focussing and using the screen zoomed at 100%. This is because you are then detecting the focus point directly on the cameras sensor. Trying to set a focus on the tiny screen is tricky, es...
Posted by JAK on 26/07/2017 - 12:26
Focusing issues on Pentax cameras
Another massive problem with LV focussing is that the lens isn't wide open it gets stopped down so the image has a big DOF :oops: Anyone who ever did printing with an enlarger knows that you have to open the lens fully to get exact focus even when using a grain magnifier. --
Posted by Algernon on 26/07/2017 - 12:43
Focusing issues on Pentax cameras
Another massive problem with LV focussing is that the lens isn't wide open it gets stopped down so the image has a big DOF :oops: Anyone who ever did printing with an enlarger knows that you have to open the lens fully to get exact focus even when using a grain magnifier. -- Good point, and so...
Posted by jeallen01 on 26/07/2017 - 13:23
Focusing issues on Pentax cameras
Ok so live View is not as accurate as the focus-rail they used in the article. But in their words "The results here [Live view] are clearly much better than those achieved by either the camera's own AF system or by manually focusing using the optical viewfinder." If i want to absolutely nail fo...
Posted by pschlute on 26/07/2017 - 13:42
Focusing issues on Pentax cameras
LV doesn't look at the camera settings. It just opens/closes the aperture in 2 stop steps to get the proper picture on the LV screen at least on the K-5. I think other marques will allow the aperture to be selected. (Maybe the K-1 does? ) Still not much use unless you have some sort of micro adj...
Posted by Algernon on 26/07/2017 - 13:47
Focusing issues on Pentax cameras
There is also the problem of focus shift. Lenses can change the point of focus when stopped down. They more often than not also change the point of focus (very dramatically) when zoomed. Fortunately, the amount of precision we can achieve is sufficient to ensure top quality results.
Posted by johnriley on 26/07/2017 - 15:11
Focusing issues on Pentax cameras
If i want to absolutely nail focus to the best of my ability on a subject i will use a tripod and LV viewed at 100%. with the lens wide open if needed. Tell me a better method? From Sabas's test of liveview with electronic shutter, it might lead to a sharper image for more reasons than just focussin...
Posted by JAK on 26/07/2017 - 16:31
Focusing issues on Pentax cameras
I also own an Olympus OM-D EM-5 DSLR and the focus point on that is spot on. A minor point, but I can't let it go uncorrected. A mirrorless camera by definition is not a DSLR. They are MILC cameras, though Panasonic coined 'DSLM' which I like better :)
Posted by SteveLedger on 26/07/2017 - 21:47
Focusing issues on Pentax cameras
I also own an Olympus OM-D EM-5 DSLR and the focus point on that is spot on. A minor point, but I can't let it go uncorrected. A mirrorless camera by definition is not a DSLR. They are MILC cameras, though Panasonic coined 'DSLM' which I like better :) ....and being a mirrorless camera pres...
Posted by pschlute on 26/07/2017 - 22:01
Focusing issues on Pentax cameras
[quote:3496ace15f="Yecora99"] I also own an Olympus OM-D EM-5 DSLR and the focus point on that is spot on. A minor point, but I can't let it go uncorrected. A mirrorless camera by definition is not a DSLR. They are MILC cameras, though Panasonic coined 'DSLM' which I like better :) ....and...
Posted by JAK on 26/07/2017 - 23:14
UPGRADING TO FULL FRAME
Hi Andrew. You could of course look for some 2nd. hand FF lenses. They were around for the likes of the Z1p etc. Also if you don't mind manual focus then there are some good "A" lenses around. Personally My old collection of FF lenses is as follows. Sigma 18mm. M Vivitar 24mm. A Pentax 50mm. A ...
Posted by vic cross on 27/07/2017 - 14:01
UPGRADING TO FULL FRAME
I can only agree with the wise words in the previous three posts, I'm glad I kept an APS-C body when I tried 36Mp fullframe a few years back. For all the positive qualities, it's just too heavy and bulky to just 'walk-around' with. Without having a particular project or subject in mind the big ca...
Posted by aybee on 28/07/2017 - 10:06
K1 Users - Restoring a K1 to default Settings - How?
Dead on guys, latest cards need a current card reader, thanks for your interest, everything is back on track. Incidentally can anyone let me know how to restore the K1 to default settings, still can't find a reference for this . Regards
Posted by Daronl on 31/07/2017 - 20:27
18 months later .... So how you getting on with the K1?
It's all I use now Mike. Should sell all my crop cameras really. Getting on well with it. Occasionally I use it in crop mode.as I believe the AF is slightly faster. But it's so easy to switch between crop and FF, that it isn't an issue. On the subject of dragonflies which Chris mentioned, I find it...
Posted by Blythman on 23/08/2017 - 14:05
18 months later .... So how you getting on with the K1?
I find it better using the 300mm and 1.4x for them. It has a closer minimum focus distance. Thanks Blythman, I'll give that a try next time
Posted by Chrism8 on 23/08/2017 - 14:11
18 months later .... So how you getting on with the K1?
I find it better using the 300mm and 1.4x for them. It has a closer minimum focus distance. Thanks Blythman, I'll give that a try next time With the 150-450 I found I was too far away for damsels Chris. The other bonus of the 300 and TC is that I was able to leave the monopod at home ;)
Posted by Blythman on 23/08/2017 - 14:42
18 months later .... So how you getting on with the K1?
Thanks Kevriano, I found as previously mentioned the distance from subject to camera was an issue plus the light in my case was poor, your shots are superb and I'd be very happy if I could replicate those. Perhaps I need to refine my technique. Thanks for the compliment. It's not an easy techniqu...
Posted by Kevriano on 23/08/2017 - 19:53
18 months later .... So how you getting on with the K1?
Well the nikon D850 CDN shipping has been pushed back and local pre-orders are canceled so it looks like a second new K-1 will be in my near future.
Posted by dovah on 05/09/2017 - 23:57
Advice from K1owners. please...
1. Use the Auto-Focus Fine Adjustment settings for each of your lenses. It can make a big difference.
Posted by pschlute on 03/09/2017 - 21:22
