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tomtom022 · 03-22-2015, 06:54 PM

I am looking at renting the Pentax 645z for a few days and trying to decide which lenses to get. I have a few questions regarding this rental.

#1 I have a pentax 67 and a 105mm 2.2 will the 105mm work on the 645? Or will I need an adapter because it a different format?

#2 I am looking at the newer 90mm ED AW lense and was wondering what the difference (if any) of that and the 75mm 2.8 other than the obvious focal lense and leaf shutter.

#3 Similar question to #1 but will the 75mm AL work for the 645z?

Thanks in advance!

mikeSF · 03-22-2015, 07:22 PM

#1 yes with a 67 to 645 adapter
#3 yes

tomtom022 · 03-22-2015, 07:27 PM

sweet thanks! Any difference between the new digital lenses and the old film lenses?

robthebloke · 03-22-2015, 07:32 PM

1. You'll need a 67 to 645 adapter. They typically aren't cheap (I bought mine for £30, but prices are usually nearer the £130+ mark)

2. Biggest difference? About £3000.

. The 90mm is also weather sealed, has newer coatings, has SDM, and does macro. if the 90mm isn't noticeably better than the 75, I'd be truly shocked!

3. I'm assuming you are talking about the FA75 f2.8 for the 645 format? (And not the 67 version?). The 67 version is better, but requires an adapter to work on the 645 mount. The 645 version is a reasonable budget lens (so far as such a thing exists in medium format), but it will work on the 645 mount (as will all older 645 lenses)

tomtom022 · 03-22-2015, 08:30 PM

Cool thanks! I forgot to ask this as well. I know the Pentax 645z files don't work on Capture one but if I convert the files to dng will it work?

672 · 03-22-2015, 10:41 PM

Rent the 90mm so you can see the best possible IQ this camera makes. I love the 67 105 and 75AL. The 645 75mm is great because it is so compact.

**jrpower10** · 03-23-2015, 08:58 AM

I got my 67 to 645 adapter from B&H Photo for $80 (Fotodiox). Probably cheaper than renting a lens.

desertscape · 03-23-2015, 10:13 AM

Originally posted by tomtom022

Any difference between the new digital lenses and the old film lenses?

The lenses for the 645D and Z are going to be a bit better than the film era lenses, not because they were designed for digital but because they are more recent designs. Pentax has been improving their lenses ever since the 6x7 came out in 1969. That is why the most recent designs for the 67 work well on the D/Z. The latest 55mm, 200mm, 165LS, 75AL, 55-100 & 90-180 zooms, 300 EDIF and 400 EDIF are examples.

bull drinkwater · 04-05-2015, 06:50 AM

Originally posted by desertscape

The lenses for the 645D and Z are going to be a bit better than the film era lenses, not because they were designed for digital but because they are more recent designs. Pentax has been improving their lenses ever since the 6x7 came out in 1969. That is why the most recent designs for the 67 work well on the D/Z. The latest 55mm, 200mm, 165LS, 75AL, 55-100 & 90-180 zooms, 300 EDIF and 400 EDIF are examples.

when you are starting with fantastic 645 and 67 lenses, a bit better isn't a big deal.

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03-22-2015, 06:54 PM	#1
tomtom022 Inactive Account Join Date: Nov 2014 Posts: 8	Pentax 75mm vs 90mm? I am looking at renting the Pentax 645z for a few days and trying to decide which lenses to get. I have a few questions regarding this rental. #1 I have a pentax 67 and a 105mm 2.2 will the 105mm work on the 645? Or will I need an adapter because it a different format? #2 I am looking at the newer 90mm ED AW lense and was wondering what the difference (if any) of that and the 75mm 2.8 other than the obvious focal lense and leaf shutter. #3 Similar question to #1 but will the 75mm AL work for the 645z? Thanks in advance!

03-22-2015, 07:22 PM	#2
mikeSF Pentaxian Join Date: Jan 2009 Location: East Bay Area, CA Photos: Gallery Posts: 6,622	#1 yes with a 67 to 645 adapter #3 yes

03-22-2015, 07:27 PM	#3
tomtom022 Inactive Account Join Date: Nov 2014 Posts: 8 Original Poster	sweet thanks! Any difference between the new digital lenses and the old film lenses?

03-22-2015, 07:32 PM	#4
robthebloke Veteran Member Join Date: Sep 2013 Location: Sydney Photos: Albums Posts: 844	1. You'll need a 67 to 645 adapter. They typically aren't cheap (I bought mine for £30, but prices are usually nearer the £130+ mark) 2. Biggest difference? About £3000. . The 90mm is also weather sealed, has newer coatings, has SDM, and does macro. if the 90mm isn't noticeably better than the 75, I'd be truly shocked! 3. I'm assuming you are talking about the FA75 f2.8 for the 645 format? (And not the 67 version?). The 67 version is better, but requires an adapter to work on the 645 mount. The 645 version is a reasonable budget lens (so far as such a thing exists in medium format), but it will work on the 645 mount (as will all older 645 lenses)

03-22-2015, 08:30 PM	#5
tomtom022 Inactive Account Join Date: Nov 2014 Posts: 8 Original Poster	Cool thanks! I forgot to ask this as well. I know the Pentax 645z files don't work on Capture one but if I convert the files to dng will it work?

03-22-2015, 10:41 PM	#6
672 Veteran Member Join Date: Dec 2010 Location: santa monica Photos: Gallery Posts: 486	Rent the 90mm so you can see the best possible IQ this camera makes. I love the 67 105 and 75AL. The 645 75mm is great because it is so compact.

03-23-2015, 08:58 AM	#7
jrpower10 Site Supporter Join Date: Sep 2011 Location: Richland, Washington, USA Posts: 935	I got my 67 to 645 adapter from B&H Photo for $80 (Fotodiox). Probably cheaper than renting a lens.

03-23-2015, 10:13 AM	#8
desertscape Pentaxian Join Date: Feb 2009 Location: Arizona Posts: 1,272	Originally posted by tomtom022 Any difference between the new digital lenses and the old film lenses? The lenses for the 645D and Z are going to be a bit better than the film era lenses, not because they were designed for digital but because they are more recent designs. Pentax has been improving their lenses ever since the 6x7 came out in 1969. That is why the most recent designs for the 67 work well on the D/Z. The latest 55mm, 200mm, 165LS, 75AL, 55-100 & 90-180 zooms, 300 EDIF and 400 EDIF are examples.

04-05-2015, 06:50 AM	#9
bull drinkwater Loyal Site Supporter Join Date: Nov 2011 Location: pontiac mi. Posts: 392	Originally posted by desertscape The lenses for the 645D and Z are going to be a bit better than the film era lenses, not because they were designed for digital but because they are more recent designs. Pentax has been improving their lenses ever since the 6x7 came out in 1969. That is why the most recent designs for the 67 work well on the D/Z. The latest 55mm, 200mm, 165LS, 75AL, 55-100 & 90-180 zooms, 300 EDIF and 400 EDIF are examples. when you are starting with fantastic 645 and 67 lenses, a bit better isn't a big deal.

Pentax 75mm vs 90mm?

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