Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
07-06-2018, 03:22 PM   #1
Senior Member




Join Date: Jul 2018
Posts: 268
Focusingscreen.com for K-3 II is worth to have for manual focusinwhen I have glasses?

Intro
Good morning everyone!

Is my first post, so you be patience of any my mistakes.

Types of photos
As owner new K-3 II body I want improve manual focusing accuracy. When I use standard focusing screen (Factory from Pentax) a lot of time I miss focus. When I take off my glasses is ok, but after about 20 minutes my eyes lost ability to MF well, because is too hard for them. I write about specific producer focusing screen, because my favorite KatzEye is out of business. I read theads about changing focusing screen, but I can't find answer on my specific questions.

I have lens: Pentax 77/1.8, Pentax M 50/1.7, Sigma 28/2.8 macro (but temporary if I find buyer I will sell it) and I plan in near future Pentax 100/2.8 WR macro. In longer time I hope I can get something wide like Pentax 15/4 and telezoom FA 70-200/2.8. From wide angle I like positions with near ground (like frog) and close to subject fx. base of trees etc. I use 77 ltd as basic lens for all - flowers, snicky street photo, portrait, interesting details around me. I plan use Pentax 100 macro to get 1:1 magnification of things around me to get them unexpected perspective, details and both artistic look with blooring background and making all in focus (F >= 8) as some part of taking photos (I plan use all the F with more DOF like F8-F16 too, but is another story). I thing about using 1.4x teleconverter in the future. I am not buying lens with F > 4, I prefer 2.8 or better lens (like F < 2.8) as I make a lot of photos indoor and sometimes 2.8 is not enought (without flash of course, but in some place and situations like new born kids I can't use flash).

I have glasses and I get astigmatism. I have problem with correction view finder when I use my body without glasses. With them when I correct dioptres I have misfocus. Without glasses I see when is focus, but when I long not used glasses I don't feel well, especially with viewing more detailed elements, parts etc. When I use glasses picture in view finder is not 100% sharp, but is less sharper about few %. As astigmatic I have one glass moved in axe vertical to correct my eyes. It is look like when normaly glass is on vertical axe 0 degree I have some degree moved. AF is the must, but in some place I would feel like more free man and use manual focus.

So then, my questions:

1. Changing focusing screen will affect my body guarantee (Europe)? I will lost them when I replace focusing screen?

2. Is a posible using external flash (I have Pentax 540) with split image on focusing screen with automatic (non manual) P-TTL mode? I am new in subject and I'm going to use more flash in manual mode, but know when I'm learning I prefer use correct exposition of flash to make effects.

3. How spot metering is affected with split image? Is a posible get proper values of times for F in manual mode like metering the most inlightened object in scene? Value of metering is affected, but is a constant which can be corrected or is random?

4. I want using focusing screen to get focus in places when I can not use AF, because AF point is not there. The most troubles with focus I get with small parts of things and nature like stalk of flowers, stem, pistils, petals, edges with extremaly low F ( F <= 2.8). For larger things I use AF the most of times, but I would fx. get proper focus on eyes wiht extreme blurring background in some cases. So what is the best focusingscreen.com type for me? Firstly I thing about K3 K3 Focusing Screen, because microprism is larger around split image or K-3 S TYPE Focusing Screen as is lighter and more detailed in viewing focus as I read on Nikon users of this product. Is a good choice or you can suggest me some better?

5. Few years ago I few minutes show old Pentax SLR with split screen 45 degree and microprism, but it was a old film camera. So in reality focus screen for MF like K3 or S type really make sense for me? Is a changing a lot of when I use glasses? Using this type of item I can get fx. info when I focus fx. on extreme edge from left when I don't have AF point it is can be usefull? Can I get any information that I am on focus, because I don't see microprism structure, but clean view? Split image in the center change geometry of some part of image by moving lines. Can it be used for anything else than center area in real photo scenario? On my body I get green focus indicator with sound for that area, so is it a really necessary?

Thank you for your time. Any sugesstion will be appreciated.

07-06-2018, 03:40 PM   #2
Veteran Member




Join Date: Jan 2009
Location: Victoria, BC
Photos: Gallery | Albums
Posts: 350
I believe the K3 has user interchangeable focus screen, so it shouldn’t affect the warranty. Did you say that you will loose the original if you change it?

That said, you will have to make sure the focusing screen is properly calibrated if you want to rely on optical focusing. The focusing screen on my K10D is somewhat inaccurate, and would require some adjustment using specialized shims (like a thin frame you put underneath the focusing screen) to make it right. Instead I ignore what I see and rely on the focus confirmation “beep” and “red light at the focus location” to tell me when it is in focus, and that method works quite well for me. So whatever focus screen you use, make sure your AF is properly calibrated first and use that to confirm the screen accuracy.
07-06-2018, 04:16 PM   #3
Site Supporter
Site Supporter
jatrax's Avatar

Join Date: May 2010
Location: Oregon Cascades
Photos: Gallery | Albums
Posts: 11,718
I used replacement focusing screens on my k-x and both K-5's but never bothered with one on the K-3II and do not miss it. I would suggest using the K-3II for awhile before worrying about changing the screen. You might find you do not need a new one.
07-06-2018, 04:25 PM   #4
Loyal Site Supporter
Loyal Site Supporter
UncleVanya's Avatar

Join Date: Jul 2014
Photos: Gallery | Albums
Posts: 14,038
Does live view work for you at all with your glasses?

07-06-2018, 04:48 PM - 2 Likes   #5
Senior Moderator
Loyal Site Supporter
Loyal Site Supporter
BigMackCam's Avatar

Join Date: Mar 2010
Location: Durham, England
Posts: 10,333
I've tried replacement focusing screens from a couple of manufacturers in my cameras before, and in fact I have one of the split image focusingscreens.com models in my GX-10, kindly donated to me by a fellow moderator. They can work quite well... However, they can also mess up metering, and you'll need to learn to compensate for that. Spot metering, in fact, will become next to useless.

Instead, I'd recommend an O-ME53 1.2x magnifying eyecup. You'd be amazed at how much difference the additional magnification can make for manual focusing, and unless you're trying to focus an f/1.4 lens wide open with perfect accuracy, you should do quite well with this accessory alone. I have one fitted to every single Pentax (and Samsung-equivalent) camera I own, and really wouldn't want to be without them now.

I'm not sure how it would work with your glasses, but if you can already adjust the viewfinder to produce a sharp view while wearing them, the O-ME53 should work just fine
07-06-2018, 05:54 PM   #6
Site Supporter
Site Supporter




Join Date: Sep 2014
Location: Bishop, CA
Posts: 170
QuoteOriginally posted by BigMackCam Quote
I've tried replacement focusing screens from a couple of manufacturers in my cameras before, and in fact I have one of the split image focusingscreens.com models in my GX-10, kindly donated to me by a fellow moderator. They can work quite well... However, they can also mess up metering, and you'll need to learn to compensate for that. Spot metering, in fact, will become next to useless.

Instead, I'd recommend an O-ME53 1.2x magnifying eyecup. You'd be amazed at how much difference the additional magnification can make for manual focusing, and unless you're trying to focus an f/1.4 lens wide open with perfect accuracy, you should do quite well with this accessory alone. I have one fitted to every single Pentax (and Samsung-equivalent) camera I own, and really wouldn't want to be without them now.

I'm not sure how it would work with your glasses, but if you can already adjust the viewfinder to produce a sharp view while wearing them, the O-ME53 should work just fine
I too have an astigmatism and find it much easier to focus without my glasses than with but my eyes do get tired easier.
With all my cameras (K1's & K3) I followed BigMackCam's suggestion of installing the O-ME53 eye cup and found this to be sufficient for most viewfinder shooting.
With a lot of macro or if I need fine tune focusing, I'll use Live View with the OK button magnification and a non magnification hood which works very well.
Both options are fairly inexpensive now days and worth a try depending on which style of shooting you prefer.
07-06-2018, 05:59 PM   #7
Site Supporter
Site Supporter
twilhelm's Avatar

Join Date: Feb 2009
Location: Florida
Photos: Gallery | Albums
Posts: 2,012
Mike beat me to it. But I had a split screen on my K20D, and I liked it for manual focus, but metering was nearly useless.

Try the OME53 before you go the route of a different screen. I also find the K3 considerably easier to focus than the older cameras.
07-07-2018, 02:41 AM   #8
pxt
Senior Member




Join Date: Jul 2018
Posts: 268
Original Poster
QuoteOriginally posted by regor Quote
So whatever focus screen you use, make sure your AF is properly calibrated first and use that to confirm the screen accuracy.
How check AF is proparly calibrated? I only check it by zoom to 100% on PC and camera screen to check that I don't miss focus (if red dot AF point is sharp in image I think that is correct).

QuoteOriginally posted by BigMackCam Quote
However, they can also mess up metering, and you'll need to learn to compensate for that. Spot metering, in fact, will become next to useless.

Instead, I'd recommend an O-ME53 1.2x magnifying eyecup.
So changing focus screen is waste of time. Spot metering is usefull for me. I use it for flash to control ambient light in manual mode (M).

Compensating is not big deal if affect of metering is constant fx. dark background make some my photos about EV +1 that I need -1EV correction of that to proper exposition to avoid overburn if I use AV auto mode in K3 II.

QuoteOriginally posted by pcrichmond Quote
I followed BigMackCam's suggestion of installing the O-ME53 eye cup and found this to be sufficient for most viewfinder shooting.
With a lot of macro or if I need fine tune focusing, I'll use Live View with the OK button magnification and a non magnification hood which works very well.
I like Live View for some work, but after taking above 11 000 photos I prefer classic view finder. Yes, UncleVanya Live view is working very well for me. It is maybe not such contrast and more dust like view with shh noise, but it is quite OK. If I use AF is more comfort to use view finder because I more isolated from surronding light and avoid reflection on screen.

QuoteOriginally posted by twilhelm Quote
I also find the K3 considerably easier to focus than the older cameras.
That is correct. I used before K200D and K3 II is more comfortable. I'm learning my new body. I take only about 1,5 thousand photos on them.

*

I think suggested eye cup is the best way to improve my manual focus experience. Only I affraid that losing corners maybe troublesome. As is zoom in is not crop view area?

07-07-2018, 05:40 AM - 1 Like   #9
Loyal Site Supporter
Loyal Site Supporter
UncleVanya's Avatar

Join Date: Jul 2014
Photos: Gallery | Albums
Posts: 14,038
Red dot only indicates where the point of focus is. Green hexagon indicated focus is achieved. This isn't fully intuitive and trips some people up I apologise if you already know this.
07-07-2018, 05:27 PM   #10
Site Supporter
Site Supporter




Join Date: Jun 2011
Location: Texas
Photos: Gallery
Posts: 1,252
I tried the recommended focusingscreen.com screen in my K-5, and while it was accurate even without shimming, manual focus was still dismal compared to my film Pentax SLRs. Since I don’t use autofocus lenses I gave up on dSLRs and use a Sony A7 instead. I focus by judging sharpness (no digital focus aids) and find it focuses as easy as my old LX film camera. Happy camper.
07-28-2018, 02:32 PM   #11
pxt
Senior Member




Join Date: Jul 2018
Posts: 268
Original Poster
I wait for magnification loope. Now I can get sense with changing camera on guaranty when I get 77 ltd.
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!
body, camera, flash, focus, focusingscreen.com, glasses, lens, macro, manual focusing, microprism, mode, pentax, pentax help, photography, screen, split image, troubleshooting
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Is it worth upgrading from a 200mm f/4 manual lens to a 150mm f/3.5 manual lens dudemanbro Pentax Medium Format 12 02-21-2018 02:21 PM
For Sale - Sold: "Nikon K3" Split focusing screen for K-3, K-3II, K-5 etc. (from focusingscreen.com) BigMackCam Sold Items 3 07-24-2016 02:35 AM
Reading glasses/computer glasses?? larryinlc General Talk 16 07-31-2012 04:44 PM
Pentax K-x, Manual Focus, and Glasses dmfw Troubleshooting and Beginner Help 10 10-12-2010 07:06 PM
Reduce eye strain (glasses & manual focus)? iht Troubleshooting and Beginner Help 9 08-22-2009 02:28 PM



All times are GMT -7. The time now is 03:44 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