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View Poll Results: Pentax Prime subject distance poll
SELECT ONE LENS BELOW: 78.54%
DA14   00%
DA21 33.66%
FA31 1012.20%
FA 35 f/2 22.44%
DA 35 MACRO 56.10%
DA 40 78.54%
FA 43 11.22%
FA 50 f/1.4 3036.59%
D FA 50 Macro 22.44%
DA 70 44.88%
FA 77 910.98%
D FA 100 44.88%
DA* 200 33.66%
SELECT ONE SUBJECT DISTANCE CATEGORY BELOW 22.44%
MACRO ONLY (less than 2 feet) 67.32%
MACRO ONLY (2 - 5 feet)   00%
1-3 feet 56.10%
4 - 10 feet 3036.59%
11-20 feet 1214.63%
21 feet to infinity 78.54%
Multiple Choice Poll. Voters: 82. You may not vote on this poll

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10-15-2008, 03:49 PM   #31
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OP response

QuoteOriginally posted by keithlester Quote
OP should get out and take pictures and stop wasting good bandwidth with silly polls. You wont collect any useful data from this, its just another type of measurebating. Just my opinion, YMMV.
Thanks for you opinion,
Brian

10-15-2008, 03:59 PM   #32
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One lens + one category only, please

Thanks to all the Forum folks who posted, however, this isn't going to work unless this basic rule is followed:

One lens and one subject distance category only for that lens... not two lenses or two categories. Those who voted for a lens alone, or a distance alone, or for two lenses and no distance, or two distance categories and no lenses, that data can't be correlated.

Brian
10-15-2008, 05:33 PM   #33
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I have to admit I am scratching my head over this one too.

You might end up with an 'ideal lens distance' chart, and it'll tell you at 10 feet the 50/1.4 kicks ass over the 77/1.8. OK, awesome. But at 10 feet the 50 will give a different field of view. So you move closer to compensate and OH NO the 35/2.8 suddenly is better at that distance... damn! So you move ahead another couple of feet, check your chart, and what would you know; the 77 is better at that distance. So you back up and.. crap.

Maybe it should be based on field of view instead? But then perspective comes into play and screws everything up...
10-15-2008, 06:27 PM   #34
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QuoteOriginally posted by FHPhotographer Quote
Sean, Wheatfield... thanks for the input, you guys seem to get it. Now, fill out the poll and be quick about it
Brian
Well, as I mentioned in the parent of this thread I've never really noticed any differences my lenses that I could correlate to distance. When I have IQ issues they're pretty much always attributable to the aperture I'm shooting at or camera movement (trying to push the IS system too hard).

10-15-2008, 08:36 PM   #35
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QuoteOriginally posted by K-xx-500-user Quote
Seems like a valid point; however that scenario would have to assume a corresponding best IQ distance per FL for both (or all) lenses.Just because a particular 50mm's best IQ distance is as you say 10ft does not necessarily mean the (or every) 35mm's best IQ distance is 7ft (0.2ft/mm corresponding).

I imagine the best lenses in a poll/study like this will have an array of distances submitted meaning to me it's a well rounded lens.
My interest in this is for comparing multiple lenses of the same or similar focal length.
As an example, I am planning on shooting head and shoulder portraiture, and I know that I will be shooting from some 5 - 8 feet.
So, which lens do I choose?
I know the 77mm LTD will have incredible bite, the 70mm LTD will render somewhat smoother, and the A*85/1.4 will be positively creamy by comparison, but still very sharp, and the M85/2 will be slightly on the softer side, with extremely smooth rendering, but slightly harsher bokeh than the other three lenses I can choose from.
Now for sure, these differences are quite subtle, but they are there, and focus distance does have an (admittedly very) slight effect on this. Knowing how each lens will render at my planned shooting aperture and approximate focus distance gives me a better idea of which lens to shoot for a particular subject.
If my model that day is young with the perfect complexion that is lost so quickly as we age, and wants a fairly hard, edgy look to her pictures, I will choose the 77mm lens. If, on the other hand, she is wanting a softer, sexier look, I might very well choose the M85/2 for it's less crisp rendering.
If nothing else, it is an interesting exercise, though it would be better if 100% crops could be posted to allow comparisons rather than the possibly subjective opinion of the posters
10-16-2008, 01:11 AM   #36
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Worst. Poll. Ever.
10-16-2008, 01:16 PM   #37
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This poll is incredibly biased. I don't think in feet!
10-16-2008, 08:09 PM   #38
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QuoteOriginally posted by ftpaddict Quote
This poll is incredibly biased. I don't think in feet!
Why not - don't you have two?

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