best possible prime landscape lens for pentax 645d

spacevoid8 · 05-07-2011, 09:56 AM

your suggestions ....

Adam · 05-07-2011, 09:58 AM

If you'd like to offload 5 grand, I'm pretty sure the new 25mm F4 will be a stellar lens. Alternatively you can look in to the FA or A 35mm lenses.

spacevoid8 · 05-07-2011, 10:12 AM

Originally posted by Adam

If you'd like to offload 5 grand, I'm pretty sure the new 25mm F4 will be a stallar lens. Alternatively you can look in to the FA or A 35mm lenses.

i think that 25mm is too wide and expensive. Can you tell me what is the difference in picture and optics quality between these lenses? I know that the first one is manual..

SMC Pentax-A 645 35mm F3.5 Reviews - Pentax Lens Reviews & Pentax Lens Database

SMC Pentax-FA 645 35mm F3.5 AL [IF] Reviews - Pentax Lens Reviews & Pentax Lens Database

Adam · 05-07-2011, 11:08 AM

I've only used the A 35, and as the FA is built differently I can't comment on the difference, but it's been my impression that both are good.

Yamanobori · 05-07-2011, 12:47 PM

Ganref, the Japanese review site, states the manual focus 35mm version is slightly better. Overall the resolution is nicer and sharper at the edges, but a little more CA in the A version which they say is easy to correct for.

GANREF | PENTAX 645D??????????????????????? | ???????????

Harklee, a Pentax Forum member, has come to the same conclusion. He gives his review here, a simple search will find it. However, all these folks say both lenses are good.

I am waiting for an A 35mm in the mail.

spacevoid8 · 05-07-2011, 01:25 PM

Yamanobori, thanks for information.

Thomas · 05-07-2011, 01:51 PM

You might also consider the 45-85mm, which is quite good on the 645D. Less wide, but even better, is the 67 55mm (latest version) which you can find for around $400. The 67 55-100mm is superb also, but heavy and more expensive

Emacs · 05-07-2011, 02:09 PM

Originally posted by spacevoid8

your suggestions ....

I found the "being too wide" quite ridiculous, so D FA 25 would be an excellent choice. Both A and FA 645 35 f3.5 are extremely good lenses too: https://www.pentaxforums.com/forums/pentax-medium-format-645-6x7-645d/139755-...ghts-645d.html

DandA · 05-07-2011, 08:35 PM

With the new 25mm on the 645D being approx 20mm in focal length (in 35mm terms), some do find 20mm equivelent a but too wide for landscapes, other do not. The FA 35mm f3.5 is an exceptionally good lens with some parcularities and also some weaker performance on the sides and edges when shot at infinity (long distance), due to considerable field curvature. I haven't personally tested the "A" version, but speaking to others, apparently edge/corner performance is superior to the FA version. As Thomas has indicated, the FA 45-85 lens is simply superb, especially on the wider end (from 45-65mm) and above 65mm, isn't too shabby either although one has to stopp down further at these longer focal lengths (for good sharpness across the frame).

Dave (DandA)

spacevoid8 · 05-07-2011, 11:24 PM

DanDa, thanks for advance, i keep your advice in mind

05-07-2011, 09:56 AM	#1
spacevoid8 Forum Member Join Date: May 2011 Location: Russia/Moscow Posts: 55	best possible prime landscape lens for pentax 645d your suggestions ....

05-07-2011, 08:35 PM	#9
DandA Senior Member Join Date: Feb 2011 Posts: 129	With the new 25mm on the 645D being approx 20mm in focal length (in 35mm terms), some do find 20mm equivelent a but too wide for landscapes, other do not. The FA 35mm f3.5 is an exceptionally good lens with some parcularities and also some weaker performance on the sides and edges when shot at infinity (long distance), due to considerable field curvature. I haven't personally tested the "A" version, but speaking to others, apparently edge/corner performance is superior to the FA version. As Thomas has indicated, the FA 45-85 lens is simply superb, especially on the wider end (from 45-65mm) and above 65mm, isn't too shabby either although one has to stopp down further at these longer focal lengths (for good sharpness across the frame). Dave (DandA) Last edited by DandA; 05-08-2011 at 07:44 AM.

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05-07-2011, 09:58 AM	#2
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 50,661	If you'd like to offload 5 grand, I'm pretty sure the new 25mm F4 will be a stellar lens. Alternatively you can look in to the FA or A 35mm lenses.

05-07-2011, 10:12 AM	#3
spacevoid8 Forum Member Join Date: May 2011 Location: Russia/Moscow Posts: 55 Original Poster	Originally posted by Adam If you'd like to offload 5 grand, I'm pretty sure the new 25mm F4 will be a stallar lens. Alternatively you can look in to the FA or A 35mm lenses. i think that 25mm is too wide and expensive. Can you tell me what is the difference in picture and optics quality between these lenses? I know that the first one is manual.. SMC Pentax-A 645 35mm F3.5 Reviews - Pentax Lens Reviews & Pentax Lens Database SMC Pentax-FA 645 35mm F3.5 AL [IF] Reviews - Pentax Lens Reviews & Pentax Lens Database

05-07-2011, 11:08 AM	#4
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 50,661	I've only used the A 35, and as the FA is built differently I can't comment on the difference, but it's been my impression that both are good.

05-07-2011, 12:47 PM	#5
Yamanobori Veteran Member Join Date: Feb 2011 Photos: Gallery Posts: 573	Ganref, the Japanese review site, states the manual focus 35mm version is slightly better. Overall the resolution is nicer and sharper at the edges, but a little more CA in the A version which they say is easy to correct for. GANREF \| PENTAX 645D??????????????????????? \| ??????????? Harklee, a Pentax Forum member, has come to the same conclusion. He gives his review here, a simple search will find it. However, all these folks say both lenses are good. I am waiting for an A 35mm in the mail.

05-07-2011, 01:25 PM	#6
spacevoid8 Forum Member Join Date: May 2011 Location: Russia/Moscow Posts: 55 Original Poster	Yamanobori, thanks for information.

05-07-2011, 01:51 PM	#7
Thomas Veteran Member Join Date: Feb 2008 Photos: Gallery \| Albums Posts: 434	You might also consider the 45-85mm, which is quite good on the 645D. Less wide, but even better, is the 67 55mm (latest version) which you can find for around $400. The 67 55-100mm is superb also, but heavy and more expensive

05-07-2011, 02:09 PM	#8
Emacs Veteran Member Join Date: Oct 2010 Location: Moscow Posts: 1,223	Originally posted by spacevoid8 your suggestions .... I found the "being too wide" quite ridiculous, so D FA 25 would be an excellent choice. Both A and FA 645 35 f3.5 are extremely good lenses too: https://www.pentaxforums.com/forums/pentax-medium-format-645-6x7-645d/139755-...ghts-645d.html

05-07-2011, 11:24 PM	#10
spacevoid8 Forum Member Join Date: May 2011 Location: Russia/Moscow Posts: 55 Original Poster	DanDa, thanks for advance, i keep your advice in mind

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