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12-05-2014, 09:18 AM   #91
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QuoteOriginally posted by mariakruse Quote
When using either the Canon or the Nikon I was aware most photographers referred to 3 lenses as the basic, must have lenses; the 14mm-24mm, the 24-70mm , and the 70-200mm; They called this the Holy Trinity of lenses. Is it the same for Pentax cameras If not, what 3 zoom lenses would be thought of in the same way?
Mariakruse
My holy trinity would be the the DA 15 F4, 100mm wr macro, 60-250 DA* It has greater reach and equal to or better than IQ the Canon or Nikon 70-200s un holies at the cost of one stop which I can live with.
What I have and am very happy with is the Tamron 17-50 2.8, Tamron 90mm macro 2.8 and the Pentax 60-250 DA*. Why don't I have the 100mm macro Pentax, cost!. Why not the 16-50 DA* f2.8 Tamron has better IQ and costs less although I miss the WR. I will at some point get the 15mm Pentax.

12-05-2014, 09:40 AM   #92
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QuoteOriginally posted by WPRESTO Quote
They tried various lenses to reproduce the scene as it was rendered in a painting. The result? Easily obvious that a 105mm on a 35mm camera was consistently the best match. So at least for artists doing urban scenes, they see/frame/perceive with a portrait lens eye.
I'd love to find a print copy of that article!
12-05-2014, 10:05 AM   #93
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QuoteOriginally posted by monochrome Quote
I'd love to find a print copy of that article!
Sorry I cannot provide a copy, or even guidance to the year - sometime in the 1960's I think. The result may be biased by the particular artists they selected, those being as I recall French. Outcome might have been different if they'd tried an English landscape artist or someone from the American Hudson Valley school.
12-05-2014, 10:48 AM   #94
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My Holy Trinity is:

- Wide DA 21mm
- Normal and K-50 body cap DA 40mm XS (but use a lot!) XD
- Tele DA* 50-135mm

And weighs 957 grams total, I think that is an important fact to keep in mind also


Last edited by Michi Joel; 12-05-2014 at 11:00 AM.
12-05-2014, 11:31 AM   #95
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QuoteOriginally posted by WPRESTO Quote
Sorry I cannot provide a copy, or even guidance to the year - sometime in the 1960's I think. The result may be biased by the particular artists they selected, those being as I recall French. Outcome might have been different if they'd tried an English landscape artist or someone from the American Hudson Valley school.
Thank you for the insight. I'm more interested in the science of lens design and how we have morphed to 'sharp across the plane' from a more representative design consistent with human vision earlier.

I keep a K105/2.8 in my bag in the event we should ever get a FF sensor.
12-05-2014, 11:51 AM   #96
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I'm a simple man. My "Holy Trinity" is the DA 21, FA 43, and the F 35-70.
12-05-2014, 01:45 PM   #97
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QuoteOriginally posted by monochrome Quote
Thank you for the insight. I'm more interested in the science of lens design and how we have morphed to 'sharp across the plane' from a more representative design consistent with human vision earlier.

I keep a K105/2.8 in my bag in the event we should ever get a FF sensor.
Here's some additional food for thought, or confusing information.
1) the horizontal FOV of the human eye is a bit over 180 degrees, but it is less vertically, and, obviously, both resolution and awareness of objects declines toward the periphery, although attention is quickly drawn to something moving in the peripheral area;
2) the horizontal binocular FOV of the human eye is about 135 degrees;
3) the FOV of the human fovea is about 15 degrees, and for the central region of the fovea where receptor density is highest the FOV is only about 5 degrees;
4) For common focal lengths on 35mm full-frame, a 150mm has a near 15 degree diagonal FOV, and a 135mm has a near 15 degree horizontal FOV.

This suggests that the French artists whose paintings of urban scenes were investigated for that magazine article were including somewhat more than the area covered by their fovea, the eye region with highest acuity.

Also of interest found during my search: The static dynamic range of the human eye is about 6.5 EV steps, but with adjustments to the iris and chemical changes within the eyeball the entire brightness range perceptible is about 46 EV steps.

I could not find an on-line archive of all articles for either Modern Photography or Popular Photography magazines.
12-05-2014, 02:49 PM   #98
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The science of Lens Design & Human Vision is certainly very exciting, but as a Photographer and a global person the following lenses would help on a vacation abroad. I have explained the reasons too:-
a) One has to travel light and not be bogged down by weight. Also it is better to keep gear as tag along cabin baggage, after what I have seen baggage handlers do with checked in baggages. So I avoid all those big f1.4 to 2.8 Primes or Zooms. Also changing too many lenses abroad is a risk, especially in the open air.
Also using your feet instead of a zoom in the crazy streets of Rome is dangerous. Begone Primes.
b) European streets are rather narrow and the monuments huge. The spires and churches are too tall and you don't even get 100 feet space in front to photograph them. So I found my Sigma 10-20 f4-5.6 the most used.
c) The DA 18-135 WR is a superb general purpose lens. And my copy is brutally sharp. Plus it allows me some semi macro shots at the 135mm range. What a sudden down pour in London. So you will be thanking God as this mighty little lens is weather resistant.
d) The HD DA 55-300 WR for that occasional reach - estimate about 18% use overall. At 4.5 x 2.5 inches and 500 gms this is a great little fellow.
e) I have some FA Primes from 24, 50 & 77 mm, but I refuse to take them for reasons mentioned in Sl. a) above.
To conclude the best trio of lenses on my foreign travels are: 1) Sigma 10-20, 2) Pentax 18-135 and 3) 55-300. All bases covered. Light and flexible.
Regards.
nanhi
camp: San Mateo, CA.

12-05-2014, 03:26 PM   #99
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In the bread scenario I'd just get close realizing that I'd better get the shot before changing lenses in case some birds eat that bread while I'm changing lenses. I might position myself so the loaves are backlit with some nice highlights on the seedy crust and put a big exaggerated starburst just above them. Of course I'm envisioning the bread somewhere I'd be taking a photo, like out in the wilderness. I might be really happy to come across some nice loaves of bread out there!

My prime (un)holy trinity are the DA Limiteds: 15, 40, and 70. Before I added the 70 the 15/40 combo was my "Dynamic Duo". Those with a K-3 fits comfortably in a small shoulder bag like a Crumpler Four Million Dollar Home.

If I need zooms I bring the DA* 16-50 and DA*60-250. To make that a trinity I add my 8mm Rokonon fisheye for the ultra wide end. This requires a bigger bag than the prime kit.
12-08-2014, 10:14 PM   #100
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"The" Trinity set for $2K+ or

How about a budget trinity:
DA 35mm F2.4
DA 50mm f/1.8
Sigma 70mm F2.8 EX DG Macro

For a little more than the price of 1 LTD
12-08-2014, 10:17 PM   #101
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QuoteOriginally posted by dtorion1970 Quote
"The" Trinity set for $2K+ or

How about a budget trinity:
DA 35mm F2.4
DA 50mm f/1.8
Sigma 70mm F2.8 EX DG Macro

For a little more than the price of 1 LTD
Ah yes. The Un-limited trio.
12-08-2014, 10:20 PM   #102
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QuoteOriginally posted by bsamcash Quote
Ah yes. The Un-limited trio.
lol. sounds like a bad 3 Stooges movie
12-08-2014, 11:44 PM - 1 Like   #103
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QuoteOriginally posted by dtorion1970 Quote
lol. sounds like a bad 3 Stooges movie
The Three Stooges! I vote for this to be the new unofficial name for this trio!
12-09-2014, 11:21 AM   #104
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My favorite Trio of lenses:

1. DA 21 mm
2. FA 43 mm
3. FA 77 mm

Although I often replace the 21 mm with the Tamron 17-50 mm because it is a mighty fine lens for a zoom and can even replace the 43 mm for a more compact travel set.

For Zooms my ideal trio would be:

1. Tamron 17-50
2. Pentax 60-250
3. Tamron 10-24

I don't have the 60-250, yet , but that's what I'd like for my trio. I'm considering the Tamron 70-200 or Pentax 200 (prime) instead of the #2, but since we're talking zooms. That would be my ideal group.
12-09-2014, 11:54 AM   #105
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QuoteOriginally posted by emalvick Quote
My favorite Trio of lenses:

1. DA 21 mm
2. FA 43 mm
3. FA 77 mm

Although I often replace the 21 mm with the Tamron 17-50 mm because it is a mighty fine lens for a zoom and can even replace the 43 mm for a more compact travel set.

For Zooms my ideal trio would be:

1. Tamron 17-50
2. Pentax 60-250
3. Tamron 10-24

I don't have the 60-250, yet , but that's what I'd like for my trio. I'm considering the Tamron 70-200 or Pentax 200 (prime) instead of the #2, but since we're talking zooms. That would be my ideal group.
If you want Pentax 60-250, why not Pentax 16-50?
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