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02-08-2010, 04:33 PM   #31
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i could've sworn it was still exceptionally easy to misfocus at 14mm/f2.8; silly me.

02-08-2010, 04:37 PM   #32
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QuoteOriginally posted by attack11 Quote
i could've sworn it was still exceptionally easy to misfocus at 14mm/f2.8; silly me.
based on the online depth of field calculator:

Focusing 10 feet away using a 14mm lens at f2.8 gives me a depth of field of 75 feet.

Focusing 20 feet away gives me infinite depth of field.

And that's wide open! Stop it down a bit and you've got infinite depth of field at all distances.
02-08-2010, 06:04 PM   #33
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and, i can do this...



so, trust me .. it's possible to screw up 14mm/f2.8
02-08-2010, 06:06 PM   #34
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QuoteOriginally posted by attack11 Quote
and, i can do this...

so, trust me .. it's possible to screw up 14mm/f2.8
Here's another one:

http://www.pzimages.com/8Reviews/lenses/pentax_14_28/samples/IMGP4526_acr37.jpg

02-08-2010, 06:09 PM   #35
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QuoteOriginally posted by attack11 Quote
and, i can do this...

so, trust me .. it's possible to screw up 14mm/f2.8
I'd say... you totally missed the hot babes and took a picture of some stupid rock What's the point of a WIDE angle lens if you don't even get the interesting stuff in the frame?

I agree that it's possible to mis-focus that kind of shot. But a wide angle lens like this is typically intended for scenery, not portraiture. And even if it was, it still has more depth of field than any other type of lens (except maybe an even wider angle lens). When depth of field is measured in feet instead of inches, it's pretty easy to get what you need in focus manually.

Besides, the lens would probably cost twice as much if it was auto-focus. Especially a 14mm f2.8.
02-08-2010, 06:15 PM   #36
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QuoteOriginally posted by GoremanX Quote
But a wide angle lens like this is typically intended for scenery, not portraiture.
I haven't seen a wide angle portrait in this thread, yet.
02-08-2010, 06:28 PM   #37
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QuoteOriginally posted by asdf Quote
I haven't seen a wide angle portrait in this thread, yet.
sure you did, you posted one. It was a portrait of a statue

ok, that's not REALLY a portrait, but it's the same style; a close-up of a subject
02-08-2010, 06:43 PM   #38
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QuoteOriginally posted by GoremanX Quote
sure you did, you posted one. It was a portrait of a statue

ok, that's not REALLY a portrait, but it's the same style; a close-up of a subject
We also saw a portrait of a rock (or something)...I suppose landscape shots are portraits of mountains and rivers and so on.

02-08-2010, 07:01 PM   #39
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QuoteOriginally posted by asdf Quote
We also saw a portrait of a rock (or something)...I suppose landscape shots are portraits of mountains and rivers and so on.
No, according to the dictionary, portraits are specifically centered around people (one or many) who are posing for a shot. (I actually had to look that up to be sure)

However, my point was that a wide angle is easier to focus than any other type of lens. The wider it is, the wider the depth of field, and the easier to focus.
02-08-2010, 07:02 PM   #40
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QuoteOriginally posted by GoremanX Quote
No, according to the dictionary, portraits are specifically centered around people (one or many) who are posing for a shot. (I actually had to look that up to be sure)

However, my point was that a wide angle is easier to focus than any other type of lens. The wider it is, the wider the depth of field, and the easier to focus.
I was obviously kidding.
02-08-2010, 08:31 PM   #41
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QuoteOriginally posted by Steve Beswick Quote
No kidding. I read a forum thread somewhere else where someone was complaining that the Samyang 8mm was manual focus. I thought to myself "they bothered putting a focus mechanism in that thing?"
I have the Rokinon branded version of that 8mm, I doubt auto focus would be able to do anything with it, I never get a focus confirmation indicator. The DOF is so deep even at f3.5 that I don't really have to worry, stopping down a little makes missing focus impossible. If I use it at f3.5 I will use the distance scale just to be sure, since I can't really see a difference in the viewfinder.
02-10-2010, 02:01 AM   #42
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I think the huge depth of field on a 14mm lens, combined with the extra perceived depth of field on modern focusing screens makes it harder to achieve critical focusing with them when manual focusing. Things will appear to be properly focused even when they really are slightly out of focus. Sometimes I take a photo with my DA 14mm 2.8 and while the subject is in focus the photo will appear front or back focused which is distracting.
08-01-2010, 11:04 PM   #43
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can the lens be used on a pentax film slr, like the MX, ME or LX?
08-01-2010, 11:20 PM   #44
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QuoteOriginally posted by bobbyismail Quote
can the lens be used on a pentax film slr, like the MX, ME or LX?
Yes, but of course the A setting will not work, which is true of any lens on those bodies.
10-29-2011, 07:22 AM   #45
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Bonjour
le Samyang 14mm est il supérieur en terme de qualité optique au Pentax 12-24 ?
votre avis m’intéresse
Merci
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