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12-19-2012, 09:04 PM   #1
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6x7 165mm or 150mm? f2.8 Christmas Present for Myself!

That time is here, when I tell everyone else I don't "do" gifts, so I can get one for myself.

I feel like I want a portrait lens with more compression and bokeh than the 105mm f2.4.

Should I go for the cheap 150mm f2.8?
Or the slightly more expensive, but heavier looking 165mm f2.8?

12-19-2012, 09:08 PM   #2
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I used them both extensively and found them to be very similar in quality - with the 165 f2.8 having the edge. The version I had also had a built-in retractable hood (which the 150 did not) - which is definitely an advantage.
12-19-2012, 09:46 PM   #3
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QuoteOriginally posted by Ed Hurst Quote
I used them both extensively and found them to be very similar in quality - with the 165 f2.8 having the edge. The version I had also had a built-in retractable hood (which the 150 did not) - which is definitely an advantage.
The 165mm seems to have 2 versions.

1982: smc PENTAX-6x7 1:2.8 165mm
1989: smc PENTAX 67 1:2.8 165mm

Any significant difference between the 2? Coatings? Sharpness?
12-19-2012, 09:58 PM   #4
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The f/2.8 165's are the same optically (Double Gauss) but the f/4 version is a Leaf Shutter type and an Ernostar design. Both have a pretty good reputation for sharpness.

12-20-2012, 12:56 AM   #5
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When I bought my 165mm in 1987, it was considered a bit better than the 150mm.
12-20-2012, 01:53 AM   #6
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I want to use it to take portraits (and also as a fast telephoto on my Digital, but that is secondary). Where can I see some portraits in different settings shot with each lens?
12-20-2012, 02:24 AM   #7
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Actually, the angle of view of the 150mm might suit my style a bit more. Taking this photo as an example, it seems to provide just a bit more compression than the 105mm, and still has the length/width to isolate a subject from head to toe.
Untitled | Flickr - Photo Sharing!

I'm wondering if the 165 would be just that little bit too long, forcing the subject to step back a few more paces, and reducing the isolation. My shooting style is somewhat like this example, and tack-sharpness isn't my first priority. I usually don't even shoot with a tripod.
12-20-2012, 06:27 AM   #8
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The Pentax 67 165mm F2.8 has AF when used with the Pentax 1.7x AF TC .



12-20-2012, 11:08 AM   #9
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I have 6x7 165/2.8 and its image quality is FANTASTIC !!! I dont know about the 150/2.8 because I do not have it, but If I can recommend, I recommend 165/2.8 :-D

This pic I shot with T-max400:

12-20-2012, 12:35 PM   #10
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If your portrait work envolves strobes, the 165mm LS is probably your better choice.
12-20-2012, 12:38 PM   #11
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Here is a shot on the 165mm LS and 100TMX taken some years ago.





12-21-2012, 04:39 AM   #12
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The 165/2.8 is a very sharp lens, even at full aperture. I use it often for astrophotography and it provides the perfect scale for many purposes there.

A lens will reveal its imperfections under such use. Nothing but fine results here.

The Star Clouds of the Scutum Milky Way, August 2012 165 @ f/4.8 60 minutes exposure Superia 100 (Full Frame)

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