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03-20-2011, 04:09 PM   #16
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QuoteOriginally posted by jrkeiser Quote
So, my brain tells me that the DA21 may be a better fit in a two or three lens kit (assuming that the FA135 gets the nod rather than the FA35), but the glowing reviews and pictures from the DA15 keep me from pulling the trigger.

.
My quick and light kit is usually either

DA 15/21/40/70,
DA12-24 40/70
DA 15, 17-70.

Depending upon whether a film body is along, the 21 may be an M20, the 40 may be a VL Ultron and the 70 may be a 77.

03-20-2011, 04:11 PM   #17
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QuoteOriginally posted by jrkeiser Quote
Twitch,
Very nice pictures. Do you think you could achieve the effect you were looking for by cropping the picture from the DA15, or did you really need the 31 or 40?
I think there would be too much loss in resolution cropping from 15mm to a 35mm-ish perspective. Someone else probably knows exactly how much but I think that would reduce it from 12MP image to ~2.5MP??? (less than half the width and height is how I understand it going from 15mm -> 35mm).
03-20-2011, 04:18 PM   #18
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You say your at 43mm when not at either end.. maybe sell the 35, get a 15, 43 and use your 70
03-20-2011, 04:21 PM   #19
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QuoteOriginally posted by twitch Quote
I think there would be too much loss in resolution cropping from 15mm to a 35mm-ish perspective. Someone else probably knows exactly how much but I think that would reduce it from 12MP image to ~2.5MP??? (less than half the width and height is how I understand it going from 15mm -> 35mm).
I think the precise figure would depend an awful lot on how the given WA lens controls distortion, as this will affect what % of the FOV is along the perimeter of the frame. Having said that, if we assume the # of degrees per pixel is evenly distributed (and that my math is trustworthy)... then to go from 15mm @ 77 degrees down to 35mm at 38 degrees, you would need to halve both the x and y dimensions of the original image, giving you ~25% your original area. So yeah, a 12MP image would go to about 3MP.

This is assuming my crazy math and other assumptions are right... But you know what they say, when you assume you make a something or other out of U and Me....

03-20-2011, 04:36 PM   #20
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Yeah I think if your cropping too much out of your shots, you should be looking at a longer focal length lens (hence my current dilemma). Cropping to get a different FoV is generally ok because most lenses have their best resolution in the center, but I wouldn't be printing the shots very large. Most of the time one would only be catching the issues by pixel peeping or large prints.
03-20-2011, 04:43 PM   #21
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With the 15 you can crop to about 20mm fov and you lose about 40% of your mp.

That is about the acceptable limit (well, for me, but I'm working with 14.6 mp).
03-20-2011, 05:20 PM   #22
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Jrkeiser

Just food for thought here but my 2 lens kit is with zooms. Sigma 10-20 and tamron 28-75

If you are always at the end of the 28-75 my bet is that 21 will also not be wide enough

I also add in my 135f2.5 if I want comPact but reach, or my 85F1.4 plus the 1.7x AF Tc for more flexibility. I am not so worried about weight as you but I still come back that the 15mm is more useful. There is a reason the kit lens is 18 mm at the wide end and the upgrades are at 16mm
03-20-2011, 06:52 PM   #23
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I happily used a 24 and a 40 for a while as my two lens kit. I would say 21 on that basis.

03-21-2011, 09:26 AM   #24
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Thanks to everyone for the advice. From the feedback, it may be asking too much to think that I can cover the focal lengths of interest (something wide to moderately wide to 70mm) with only 2 lenses. I don't think I'm any closer to making a final decision, but you've given me a lot more to think about before I do.
03-21-2011, 09:52 AM   #25
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Glad to help confluster you remember LBA is only bad to your wallet.
03-21-2011, 11:34 PM   #26
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I own the DA15 and have never used the DA21. But im going to say that the 21 will be a better match to the 70. Even then there is still a void.

A 3 prime lens kit would be better
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