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quick siggy 100-300 sharpness test...

bretti_kivi
Posted 25/07/2011 - 14:26 Link
Handheld, 300mm, 1/500, f11, ISO320.

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range to target is around 200m.

I'm reasonably happy

Bret
my pics: link
my kit: K3, K5, K-01, DA 18-55, D-FA50 macro, Siggy 30/1.4, 100-300/f4, 70-200/2.8, Samsung 12-24/f4, Tamron 17-50, and lots of other bits.
Pwynnej
Posted 25/07/2011 - 15:03 Link
DUST SPOT ALERT
Z-1p, K-1, P50
F50 1.7. SMC-FAs 24, 35, 50 1.4, 85, 135. HD-FA15-30, DFA24-70, D-FA*70-200. The SMC-FA Limited Trinity.
Metz 45 CL-4, AF500FTZ. AF540FGZ.
Some Mamiya and some Nikon
pentaxanne
Posted 25/07/2011 - 16:07 Link
not a very good test, get a feather and place that a decent distance awy and then take some shots wide open then stopped down then that will show you just how ood the lens is,
thoughton
Posted 25/07/2011 - 16:16 Link
Looks sharp, but then again even a consumer zoom should look sharp at these sizes

Unless these are 1:1 crops?
Tim
AF - Pentax K5, Sigma 10-20/4-5.6, Tamron 17-50/2.8, Sigma 30/1.4, Sigma 70-200/2.8, Tamron 70-300/4-5.6
MF - Vivitar CF 28/2.8, Tamron AD2 90/2.5, MTO 1000/11
Stuff - Metz 58 AF1, Cactus v4, Nikon SB24, Raynox 150, Sigma 1.4x TC, Sigma 2x TC, Kenko 2x macro TC, Redsnapper 283 tripod, iMac 27, Macbook Pro 17, iPad, iPhone 3G
Flickr Fluidr PPG Street Portfolio site
Feel free to edit any of my posted photos! If I post a photo for critique, I want brutal honesty. If you don't like it, please say so and tell me why!
snappychappy
Posted 25/07/2011 - 17:34 Link
Don't want to know, have been after this len's for ages.
bretti_kivi
Posted 25/07/2011 - 18:04 Link
no, they're not yet. However, I've just taken it out again and recalibrated; at -4 it's accurate.

I'm just uploading some 100% crops of a roof across the street, probably 100m away.

Bret
my pics: link
my kit: K3, K5, K-01, DA 18-55, D-FA50 macro, Siggy 30/1.4, 100-300/f4, 70-200/2.8, Samsung 12-24/f4, Tamron 17-50, and lots of other bits.
bretti_kivi
Posted 25/07/2011 - 18:10 Link
1/2500 f5.6, ISO250
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1/6400, f4, ISO250
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1/6400, f10, ISO2000
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full size of the last one:
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Thoughts?

Bret
my pics: link
my kit: K3, K5, K-01, DA 18-55, D-FA50 macro, Siggy 30/1.4, 100-300/f4, 70-200/2.8, Samsung 12-24/f4, Tamron 17-50, and lots of other bits.
Algernon
Posted 25/07/2011 - 18:37 Link
pentaxanne wrote:
not a very good test, get a feather and place that a decent distance awy and then take some shots wide open then stopped down then that will show you just how ood the lens is,

Feathers are unreliable for test purposes. What you are actually photographing is the light forming shadows on the feather and there will be a big difference between underexposed and overexposed in the sun out of the sun etc. A piece of cloth of all one colour is the same, without the shadows cast by the light it will be all just one colour.

Postage stamps with a lot of detail or foreign banknotes are better.
Half Man... Half Pentax ... Half Cucumber

Pentax K-1 + K-5 and some other stuff

Algi
bretti_kivi
Posted 25/07/2011 - 18:40 Link
but neither of those are really realistic for the situations in which the lens will be used, i.e at a decent distance.

I'm much happier now I've calibrated with -4, I can't get the focus any better than AF and at these sizes, it looks reasonable to me.

Bret
my pics: link
my kit: K3, K5, K-01, DA 18-55, D-FA50 macro, Siggy 30/1.4, 100-300/f4, 70-200/2.8, Samsung 12-24/f4, Tamron 17-50, and lots of other bits.
Mike-P
Posted 25/07/2011 - 19:14 Link
How many times do we actually crop a picture to 100%? Don't think I have ever done it to be honest. All this pixel peeping rubbish is useless in everyday use, as long as the finished article looks sharp then that's all that matters.

Looks fine to me.
bretti_kivi
Posted 25/07/2011 - 19:24 Link
I've also tested it quickly on a building down the road. It doesn't matter what aperture I use, it's reasonably sharp. The chainlink on the other side of the road is also stunning. Requires silly-fast shutter speeds (but then, that's why I have a monopod) or high ISO (but that's why I have a K5).

Bret
my pics: link
my kit: K3, K5, K-01, DA 18-55, D-FA50 macro, Siggy 30/1.4, 100-300/f4, 70-200/2.8, Samsung 12-24/f4, Tamron 17-50, and lots of other bits.
thoughton
Posted 26/07/2011 - 14:03 Link
Mike-P wrote:
How many times do we actually crop a picture to 100%? Don't think I have ever done it to be honest. All this pixel peeping rubbish is useless in everyday use, as long as the finished article looks sharp then that's all that matters.

Looks fine to me.

I usually edit my photos on a 27" 2560x1440 screen, so even without any zooming I'm already at 1:2 Obviuously it doesn't matter much whenposting uncropped photos to the web, but I will regularly crop a lot out of my photos (yes I know, my in-camera composition sucks ) so pixel-level sharpness is important to me.
Tim
AF - Pentax K5, Sigma 10-20/4-5.6, Tamron 17-50/2.8, Sigma 30/1.4, Sigma 70-200/2.8, Tamron 70-300/4-5.6
MF - Vivitar CF 28/2.8, Tamron AD2 90/2.5, MTO 1000/11
Stuff - Metz 58 AF1, Cactus v4, Nikon SB24, Raynox 150, Sigma 1.4x TC, Sigma 2x TC, Kenko 2x macro TC, Redsnapper 283 tripod, iMac 27, Macbook Pro 17, iPad, iPhone 3G
Flickr Fluidr PPG Street Portfolio site
Feel free to edit any of my posted photos! If I post a photo for critique, I want brutal honesty. If you don't like it, please say so and tell me why!
Edited by thoughton: 26/07/2011 - 14:05
MrCynical
Posted 28/07/2011 - 23:20 Link
Mike-P wrote:
How many times do we actually crop a picture to 100%? Don't think I have ever done it to be honest. All this pixel peeping rubbish is useless in everyday use, as long as the finished article looks sharp then that's all that matters.

Looks fine to me.

When making large prints? (15x10 or greater is my rough guesstimate for the K20D)
giofi
Posted 29/07/2011 - 06:54 Link
MrCynical wrote:
Mike-P wrote:
How many times do we actually crop a picture to 100%? Don't think I have ever done it to be honest. All this pixel peeping rubbish is useless in everyday use, as long as the finished article looks sharp then that's all that matters.

Looks fine to me.

When making large prints? (15x10 or greater is my rough guesstimate for the K20D)

Or when cropping the photo? A number of pictures I have taken with this lens where cropped, and are still quite sharp.
But IMO in addition to sharpness, this lens focuses fast, which is what some of you had mentioned before I bought it. I have taken pictures at boys' football matches ( I cannot post them unfortunately) and results were far better than what I have had earlier!

Enjoy your lens, we could have a joint test when we organize the Finnish meet....

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