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11-26-2010, 09:40 AM   #16
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QuoteOriginally posted by raider Quote
interesting observation. If most of the shots are taken at the wide end or tele end of the zoom, would it be better to just go get a prime lens of matching focal length? i.e. if most of the shot is a 70mm out of a 17-70 or 70-200, just get a DA70 or something?
Often thought about that myself.
Except what quickly kills the debate is that 1 zoom makes huge economic sense versus 2 primes. And fact is reasonable ones do a quite acceptable job for most people as well as provide the obvious convenience of ease of transport and less lens swapping.

And to answer your underlying question: Sort of irrational isn't it? Because most zoom lenses are pretty crappy IQ wise at their respective maximums each end! So why not just wind it off 2-5mm ? or wherever it starts to come good and take the pic?

But being human we won't modify our behaviour around things like that.
Common sense isn't.

.R.

11-26-2010, 03:18 PM   #17
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QuoteOriginally posted by JeffJS Quote
Interesting program.

The first is from my K7 after a year of use. I'll have to take the software's word for it as I'm not going to go through and manually check 8000 photos.

900 shots at f0 :-). Mine also showed many at f0 and some at 1742mm....none at 800mm or 1200mm (depends how it looks at them) to reflect that lens...
11-26-2010, 03:21 PM   #18
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QuoteOriginally posted by raider Quote
interesting observation. If most of the shots are taken at the wide end or tele end of the zoom, would it be better to just go get a prime lens of matching focal length? i.e. if most of the shot is a 70mm out of a 17-70 or 70-200, just get a DA70 or something?

I'm pretty sure a plot of any zoom will show this tendency. You want to go wider, and hit a stop, and you want to go longer, and hit that stop.
11-26-2010, 05:07 PM   #19
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QuoteOriginally posted by SpecialK Quote
900 shots at f0 :-). Mine also showed many at f0 and some at 1742mm....none at 800mm or 1200mm (depends how it looks at them) to reflect that lens...
If you're shooting with a lens that doesn't pass the aperture information to the camera, then it'll be marked as f/0...

11-26-2010, 06:49 PM   #20
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I analysed the limited photos I have on this computer, and i seem to dislike 100mm focal length!

I also noticed a huge spike at my shortest focal length, which confirms to me that I need a wider angle lens.
11-26-2010, 07:23 PM   #21
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QuoteOriginally posted by SpecialK Quote
900 shots at f0 :-). Mine also showed many at f0 and some at 1742mm....none at 800mm or 1200mm (depends how it looks at them) to reflect that lens...
Yep, In the last few months I was using the K7, I rediscovered full manual lenses. K28 f2.0, K30 f2.8, K135 f2.5, that sort of thing. None of those report aperture to the camera though most were taken typically between f4 and f8.

11-26-2010, 09:17 PM   #22
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QuoteOriginally posted by secateurs Quote

I also noticed a huge spike at my shortest focal length, which confirms to me that I need a wider angle lens.
Sheesh! Some people will use any excuse to create a reason for LBA.

UWAs are better than sliced bread. You won't regret it.

.R.
11-27-2010, 12:46 AM   #23
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QuoteOriginally posted by JeffJS Quote
Yep, In the last few months I was using the K7, I rediscovered full manual lenses. K28 f2.0, K30 f2.8, K135 f2.5, that sort of thing. None of those report aperture to the camera though most were taken typically between f4 and f8.

Ah, that explains the f0. I had forgotten that little detail as I always "fill in" the missing data on my exif database....

11-27-2010, 05:17 PM   #24
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QuoteOriginally posted by Frogfish Quote
Exposure Plot

I've just run this again to see what I'm shooting (it's a free windows software program from vAndel - freeware runs fine on my Mac using Crossover). Some interesting results !
Great software, I owe you a thank you.

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