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08-31-2011, 01:02 PM   #1
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New to P67 need advice on lenses

Hi all. I just got a Pentax 67 with the 90mm f/2.8 lens. So far, I love it, love deveoping my own negatives both B&W and color, love the results I am seeing. I am looking to get two more lenses, something wider and something longer.

On the wide end I am drawn to the 45mm f/4 as it is the same angle of view as the DA 15 and I love the DA 15. I have heard great things about the 67 version of the 55mm f/4. However, I live next to Acadia national park and I frequently use the DA 15 for shooting in the park and I worry about the angle of view of the 55mm might too often be a little constricting for my current style.

The 90mm is my normal lens and I am good with that. I was very tempted to go for the 105mm, I have seen so many amazing shots from this lens. However in the end, I went with the 90 because its lighter, smaller and focuses significantly closer than the 105. The 105 still tempts me though! Hmmm, it may make it on my Christmas list yet!

On the long end the 165mm f/2.8 seems good choice. It's a classice angle of view for portaits; I like that its fast, that should help to keep the camera view finder bright and aid in focusing. How's the bokeh on this lens? Is it better than the other options in this range, the 150mm and the 200mm? The 135 seems a bit short as I already have the 90mm. Its nice that the 135 is a macro as well, but does it focus that much closer than the 90mm?

Any thoughts you care to share are much appriciated.

Thanks in advance,

Doug

08-31-2011, 01:12 PM   #2
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Hi Doug,

In case you haven't already made the calculations yourself, this chart may prove helpful in finding the lenses that correspond to those you have in the K mount:


Adam
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08-31-2011, 01:30 PM   #3
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Hello

I got my 67 1 year ago and have meanwhile 45, 75, 90LS, 105, 135, 165, 200 and a 2x-Converter.

Usually I take the 67-Equipment additional to my K7 shooting mainly B&W. Most of the time there is only room for 3 Lenses and than 45, and 165 are with me. In the middle I decide case by case. The 200 is brand new so I can not evaluate.

On the short side I preferred the 45 because the 55 Picture can easily be cropped - and keep in mind that the 55-perspective on a 6x7 is equivalent to a 45-perspective on a 645.

The 165 is quite fast - and quite cheap :-)
08-31-2011, 04:24 PM   #4
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I don't think these equivalencies tells the whole truth really. Since the aspect ratio is not the same, lenses on 6x7 feel much wider to me than what I had expected. You get so much more on the short side that a less wide lens often will do. For example, 55 mm gives the same vertical AOV as (55/55)*16 = 16 mm on APS-C, but less horizontal AOV of course; (55/70)*24 = 19 mm.

Edit: The Pentax 6x7 format is actually 55x70 mm instead of the usual 56x69.

08-31-2011, 04:33 PM   #5
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From my point of view (landscape, cityscape) I am delighted with the 55/4 and the 200/4 in addition to the 90 - both from an image quality point of view and from a "useful" focal lenght point of view.
On the other if I want to carry only one lens with the 67 I take the 75mm - to me it is the equivalent of a 35mm on 24x36.

Cheers,

luc
08-31-2011, 06:01 PM   #6
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Thanks for the input everyone.

Adam, thanks for the chart, this and the lens database info are very useful.

Klaus, nice selection of lenses! I can see myself with those same focal lengths in a year or so. I think you make a good point about the ability to crop the 45mm image to the 55mm FOV.

Makten, very interesting point about the aspect ratio... hmm, hadn't considered that!

Ibenac, I can see how the distortion of the 45mm might be problematic for city shooting. I am one of those who always want to go wider! But I am not a big fan of distortion. Although the 45mm doesn't seem too bad in this regard. I had the DA 35 for a time, it was just a little tight for me, I tend to like the FA31 or my old M28 f/3.5 better in this range... maybe he 55mm will be in my future after all!

Thanks again everyone!

Doug
09-01-2011, 02:40 AM   #7
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I'll be interested to hear what you decide to go with, Doug.

I have the 55/4, 105/2.4 and recently acquired the 200/4. Haven't scanned any shots with the 200/4 yet but I'm very happy with the image quality and usage of the 55 and 105. I'm expecting the 200 to be similar to the 55 in sharpness - which is really good. The 105/2.4 is great too and has very smooth OOF, although I feel I can notice the 55/4 resolving a little bit more detail than the 105.
I get the feeling that most/all of these 67 lenses are very good in terms of image quality, so you probably can't go wrong.

The 55/4 has a similar field of view to 28mm on 135. But as Makten mentions, it's not the same. Although I have the DA15 on APSC also, I find the 55/4 is plenty wide enough for my needs on the 67.
09-01-2011, 07:08 AM   #8
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Note too that optically the SMC Pentax 67 55mm f4 is different than the older SMC Pentax 6x7 55mm f4 generation of the lens. I would recommend you try for the 67 generation if you decide to get that lens.


Last edited by tuco; 09-01-2011 at 07:32 AM.
09-01-2011, 07:40 AM   #9
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QuoteOriginally posted by tuco Quote
Note too that optically the SMC 67 55mm f4 is different than the older SMC 6x7 55mm f4 generation of the lens. I would recommend you try for the 67 generation if you decide to get that lens.
I have the "new" 67 and I really love it.
goddo31 (see below) has the "old" design but still gets some wonderful images out of it.
I decided to get the newer design based on review and be "better safe than sorry". Not sure what the cost difference is but should not be excessive.

QuoteOriginally posted by goddo31 Quote
I'm expecting the 200 to be similar to the 55 in sharpness - which is really good. The 105/2.4 is great too and has very smooth OOF, although I feel I can notice the 55/4 resolving a little bit more detail than the 105.
The 55/4 has a similar field of view to 28mm on 135.
I have the same feeling about the 55 - if I had to compare it to 24x36, I would go for the K28 - it feels a little bit wider than a 28mm but not like a 24mm.
The 200mm I would compare it to something between the K105mm and K135mm - closer to the 105.


QuoteOriginally posted by DougLee Quote
Ibenac, I can see how the distortion of the 45mm might be problematic for city shooting. I am one of those who always want to go wider! But I am not a big fan of distortion. Although the 45mm doesn't seem too bad in this regard. ... maybe he 55mm will be in my future after all!
Doug
That is why I have the 75mm SHIFT instead of the normal 75mm - when I go to town (not very often) guess who will be coming with me.

https://www.pentaxforums.com/forums/pentax-medium-format-645-6x7-645d/87027-p...at-photos.html

I would not sell my 55/4 nor my 200/4 - the 55 in particular seems to give a special rendering and glow to the shots.
09-01-2011, 07:53 AM   #10
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QuoteOriginally posted by tuco Quote
Note too that optically the SMC Pentax 67 55mm f4 is different than the older SMC Pentax 6x7 55mm f4 generation of the lens. I would recommend you try for the 67 generation if you decide to get that lens.
I haven't tried the new one, but I can say that the old one is just as sharp as the 75/4.5, which is said to be the best lens of the whole system. So there's nothing wrong with the old one for sure. It's a bit larger though.
09-01-2011, 07:54 AM   #11
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QuoteOriginally posted by tuco Quote
Note too that optically the SMC Pentax 67 55mm f4 is different than the older SMC Pentax 6x7 55mm f4 generation of the lens. I would recommend you try for the 67 generation if you decide to get that lens.
I would recommend trying for the newer one too, but I still find the earlier "6x7" lens to perform really well.

QuoteOriginally posted by lbenac Quote
I have the "new" 67 and I really love it.
goddo31 (see below) has the "old" design but still gets some wonderful images out of it.
I decided to get the newer design based on review and be "better safe than sorry". Not sure what the cost difference is but should not be excessive.
Actually I had ordered the newer 67 55/4 but the seller sent me the earlier one instead. Price difference was about $50 in my case. After getting scanning some images from it, I decided that the version I received was good enough.
Note that there is also an earlier 55/3.5 tak with a much larger front element and filter thread.
09-01-2011, 12:23 PM   #12
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Going the prime lens route works well, which is what I did many years ago. You should however consider the two zooms, especially if you are looking for lenses that are just as sharp as the primes but with smaller stops and better DOF. I suggest reading the lens reviews in this forum.
09-01-2011, 03:53 PM   #13
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Well, this Pentax 6x7 Lens Guide rates the newer 55mm an "A" and the older one a "B" relative to other Pentax lenses for what it's worth.
09-01-2011, 03:54 PM   #14
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QuoteOriginally posted by desertscape Quote
Going the prime lens route works well, which is what I did many years ago. You should however consider the two zooms, especially if you are looking for lenses that are just as sharp as the primes but with smaller stops and better DOF. I suggest reading the lens reviews in this forum.
Who wouldn't. But the problem is finding one of those zooms even if you have the money.
09-01-2011, 04:00 PM   #15
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QuoteOriginally posted by tuco Quote
Well, this Pentax 6x7 Lens Guide rates the newer 55mm an "A" and the older one a "B" relative to other Pentax lenses for what it's worth.
B+, which the 90/2.8 and the 105/2.4 also gets. I'd say the old 55/4 is sharper than both of those, except for the extreme corners. Don't get me wrong, I'd choose the newer one if I could find one cheap. I gave a very low price for my old one and the urge for the newer disappeared as soon as I saw the results.
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