Pentax 645N shutter speed help- may be silly question

jreneejohnson · 08-12-2016, 08:34 PM

Just received my Pentax 645n camera. When I metered the light tonight- it said shutter should be at 350. The dial doesn't go to 350. How do I get a correct exposure???
Hope this isn't a totally stupid question!!!

ldj4549 · 08-12-2016, 08:53 PM

I don't have a 654N (but I am envious!), perhaps it means 1/350? Try that and I bet it will work for you. What an awesome device you have, have a good time with it!

pentaxus · 08-12-2016, 09:15 PM

If you have the camera set in aperture priority automatic, the camera shutter speed is continuously variable. The camera sets "in between" shutter speeds to give correct exposure. If you are in manual exposure the camera will show the shutter speed you have set. If you have the shutter dial at A and the lens at A you can also get an in between shutter speed because the camera is choosing both, using full and in between settings for aperture and shutter speed to get correct exposure.

Brooke Meyer · 08-13-2016, 02:11 AM

Originally posted by jreneejohnson

Just received my Pentax 645n camera. When I metered the light tonight- it said shutter should be at 350. The dial doesn't go to 350. How do I get a correct exposure???
Hope this isn't a totally stupid question!!!

645NII allowed 1/2 stop shutter speeds in manual. I have a 645N and use manual mode so its the closest full stop. I don't use slide film which needs spot on exposure. If I did, I'd use Aperture Priority and dial in Exposure Compensation. Negative film like Portra or TMAX has lot of exposure latitude so close is good enough. A lot of folks even think they get a better negative with a stop of over exposure and as example, will expose ISO 400 as 200. I recently went back to the future and added some film to my portrait sessions. I use a digital body as a "Polaroid" to establish exposure. Still getting used to 1/60 sync speed. BTW, I buy 220 backs, remove 1 screw, flip a small piece 180, re-install the screw and I have a 120 back. Look for them on the KEH and Roberts Camera eBay stores. Been buying VG and LN for $26 and $29 with free shipping. Also, you can pick up 645N wired shutter release at the Roberts eBay store for 8 bucks.

jreneejohnson · 08-14-2016, 06:04 AM

Is there somewhere that I can see how to do that?

Jenn

Brooke Meyer · 08-23-2016, 07:50 PM

Originally posted by jreneejohnson

Is there somewhere that I can see how to do that?

Jenn

Didn't see a notice you'd responded. Here's a link on this forum with pictures. https://www.pentaxforums.com/forums/48-pentax-medium-format/101062-pentax-645...ml#post1533633

Undo one tiny screw, turn the piece 180 and re-install

Slightly better pictures Pentax 645N - 120 film in 220 magazine? | APUG.ORG

08-12-2016, 08:34 PM	#1
jreneejohnson New Member Join Date: Aug 2016 Posts: 2	Pentax 645N shutter speed help- may be silly question Just received my Pentax 645n camera. When I metered the light tonight- it said shutter should be at 350. The dial doesn't go to 350. How do I get a correct exposure??? Hope this isn't a totally stupid question!!!

08-23-2016, 07:50 PM	#6
Brooke Meyer Pentaxian Join Date: Nov 2013 Location: North Carolina Posts: 1,027	Originally posted by jreneejohnson Is there somewhere that I can see how to do that? Jenn Didn't see a notice you'd responded. Here's a link on this forum with pictures. https://www.pentaxforums.com/forums/48-pentax-medium-format/101062-pentax-645...ml#post1533633 Undo one tiny screw, turn the piece 180 and re-install Slightly better pictures Pentax 645N - 120 film in 220 magazine? \| APUG.ORG Last edited by Brooke Meyer; 08-23-2016 at 08:00 PM. Reason: Add info

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08-12-2016, 08:53 PM	#2
ldj4549 Forum Member Join Date: Feb 2011 Location: Minneapolis Photos: Gallery Posts: 58	I don't have a 654N (but I am envious!), perhaps it means 1/350? Try that and I bet it will work for you. What an awesome device you have, have a good time with it!

08-12-2016, 09:15 PM	#3
pentaxus Veteran Member Join Date: Jun 2010 Location: Marina CA Posts: 331	If you have the camera set in aperture priority automatic, the camera shutter speed is continuously variable. The camera sets "in between" shutter speeds to give correct exposure. If you are in manual exposure the camera will show the shutter speed you have set. If you have the shutter dial at A and the lens at A you can also get an in between shutter speed because the camera is choosing both, using full and in between settings for aperture and shutter speed to get correct exposure.

08-13-2016, 02:11 AM	#4
Brooke Meyer Pentaxian Join Date: Nov 2013 Location: North Carolina Posts: 1,027	Originally posted by jreneejohnson Just received my Pentax 645n camera. When I metered the light tonight- it said shutter should be at 350. The dial doesn't go to 350. How do I get a correct exposure??? Hope this isn't a totally stupid question!!! 645NII allowed 1/2 stop shutter speeds in manual. I have a 645N and use manual mode so its the closest full stop. I don't use slide film which needs spot on exposure. If I did, I'd use Aperture Priority and dial in Exposure Compensation. Negative film like Portra or TMAX has lot of exposure latitude so close is good enough. A lot of folks even think they get a better negative with a stop of over exposure and as example, will expose ISO 400 as 200. I recently went back to the future and added some film to my portrait sessions. I use a digital body as a "Polaroid" to establish exposure. Still getting used to 1/60 sync speed. BTW, I buy 220 backs, remove 1 screw, flip a small piece 180, re-install the screw and I have a 120 back. Look for them on the KEH and Roberts Camera eBay stores. Been buying VG and LN for $26 and $29 with free shipping. Also, you can pick up 645N wired shutter release at the Roberts eBay store for 8 bucks.

08-14-2016, 06:04 AM	#5
jreneejohnson New Member Join Date: Aug 2016 Posts: 2 Original Poster	Is there somewhere that I can see how to do that? Jenn