Pentax 645D focusing screen

ednguyen · 06-06-2013, 01:15 PM

Hi Light-in-Focus,

Good idea! I think the AB-82 with the Split-Screen is still better for manual focusing. I will keep looking around for one. Doesn't have to be new. Yes, I am fluent in Vietnamese. Perhaps they will give me a 99% discount haha

Thanks again,
Ed
www.EdwardNguyenPhotography.com

ednguyen · 06-25-2013, 08:20 PM

Hi Light-in-Focus,

I have just received the AB-82 focusing screen. It works great with my old 165mm f/4 leaf-shutter lens as well as the new autofocus FA lenses. Thanks again

Ed
EDWARD NGUYEN P H O T O G R A P H Y

Underbridge · 09-03-2014, 10:19 PM

Originally posted by Light-in-Focus

Hi DandA

I've installed the AB-82 on my 645D, and it works just great. It helps a lot to manually focus since it's a split screen.
The screens prior to 645n, won't work on the 645D,.... but all the screens for the 645n and newer will work. They used the same screen mount for the D.

By the way,... the focusing screen will not affect auto-focus in any way. I've used both manual and auto-focus lens and all worked just right.
To the best of my knowledge, the auto-focus sensor is located below/next to, the focusing screen, somewhere between the mirror and the screen, and takes its reading off the mirror. The sensor doesn't go through the screen to take its reading. That is why there is sometimes a discrepancy of front or rear focus. The distance from mirror to screen and mirror to sensor is not always the same, thus need for micro adjustments.....

Good shooting

Hi, Light-in-focus

Thanks for your sharing, will the AB-82 effect the exposure metering system? the EV measured are same to original focusing screen?

Cheers!

Philip

2351HD · 09-04-2014, 03:39 AM

Originally posted by Underbridge

Hi, Light-in-focus

Thanks for your sharing, will the AB-82 effect the exposure metering system? the EV measured are same to original focusing screen?

Cheers!

Philip

Everything works fine with the AB82.

I have one spare from my 645D if you are interested.

bcoelho · 03-03-2016, 02:55 PM

Originally posted by 2351HD

Everything works fine with the AB82.

I have one spare from my 645D if you are interested.

Hi there!

Do you still have that spare AB-82?

Thanks in advance for letting me know!
Baldomero

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
645D Focusing Screen	thapamd	Pentax Medium Format	17	01-26-2012 09:35 PM
How do I change the focusing screen of the 645D?	derAngler	Pentax Medium Format	2	12-13-2011 01:19 AM
Focusing manual lens with OEM focusing screen, is a split screen really needed?	skid2964	Pentax Camera and Field Accessories	16	09-17-2010 02:54 PM
Pentax K7 Focusing Screen	janos.tronkos	Pentax DSLR Discussion	4	07-31-2010 10:58 AM
For Sale - Sold: Pentax Brand Focusing Screens and Katz Eye Focusing Screen K10D/K20D (Worldwid	superbass	Sold Items	8	03-26-2010 01:42 PM

06-06-2013, 01:15 PM	#16
ednguyen Inactive Account Join Date: Apr 2012 Posts: 19	Hi Light-in-Focus, Good idea! I think the AB-82 with the Split-Screen is still better for manual focusing. I will keep looking around for one. Doesn't have to be new. Yes, I am fluent in Vietnamese. Perhaps they will give me a 99% discount haha Thanks again, Ed www.EdwardNguyenPhotography.com

06-25-2013, 08:20 PM	#17
ednguyen Inactive Account Join Date: Apr 2012 Posts: 19	Hi Light-in-Focus, I have just received the AB-82 focusing screen. It works great with my old 165mm f/4 leaf-shutter lens as well as the new autofocus FA lenses. Thanks again Ed EDWARD NGUYEN P H O T O G R A P H Y

09-03-2014, 10:19 PM	#18
Underbridge New Member Join Date: Jun 2012 Location: Xiamen Posts: 22	Originally posted by Light-in-Focus Hi DandA I've installed the AB-82 on my 645D, and it works just great. It helps a lot to manually focus since it's a split screen. The screens prior to 645n, won't work on the 645D,.... but all the screens for the 645n and newer will work. They used the same screen mount for the D. By the way,... the focusing screen will not affect auto-focus in any way. I've used both manual and auto-focus lens and all worked just right. To the best of my knowledge, the auto-focus sensor is located below/next to, the focusing screen, somewhere between the mirror and the screen, and takes its reading off the mirror. The sensor doesn't go through the screen to take its reading. That is why there is sometimes a discrepancy of front or rear focus. The distance from mirror to screen and mirror to sensor is not always the same, thus need for micro adjustments..... Good shooting Hi, Light-in-focus Thanks for your sharing, will the AB-82 effect the exposure metering system? the EV measured are same to original focusing screen? Cheers! Philip

09-04-2014, 03:39 AM	#19
2351HD Veteran Member Join Date: Apr 2013 Location: Brisbane, Australia Photos: Albums Posts: 750	Originally posted by Underbridge Hi, Light-in-focus Thanks for your sharing, will the AB-82 effect the exposure metering system? the EV measured are same to original focusing screen? Cheers! Philip Everything works fine with the AB82. I have one spare from my 645D if you are interested.

03-03-2016, 02:55 PM	#20
bcoelho New Member Join Date: Jan 2016 Photos: Gallery Posts: 17	Originally posted by 2351HD Everything works fine with the AB82. I have one spare from my 645D if you are interested. Hi there! Do you still have that spare AB-82? Thanks in advance for letting me know! Baldomero