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Forum: Pentax KP 3 Days Ago  
KP with Sigma 50-500mm anyone?
Posted By Sterby
Replies: 1
Views: 307
I used the OS HSM on my K-3, it is a wonderful lens with lightning fast and accurate AF. The faster AF algorithm in the KP can only benefit the lens more.
Also the OS is excellent, just turn off the in-body SR.
Forum: Lens Clubs 11-20-2017, 08:21 AM  
The 300mm plus lens Club discuss your long lenses.
Posted By Sterby
Replies: 27,038
Views: 2,303,226
So it is possible to do food photography with a 300mm lens.
Forum: Lens Clubs 11-02-2017, 01:58 PM  
The 300mm plus lens Club discuss your long lenses.
Posted By Sterby
Replies: 27,038
Views: 2,303,226





QuoteOriginally posted by Ducatigaz Quote

Common Buzzard from the car. K-3ii/FA*600mmF4ED[IF}/Eckla window mount.



I'm just wondering, how does one get access to your car? Seems to me it knows the best places for birding :D
Forum: Pentax SLR Lens Discussion 10-24-2017, 01:16 AM  
DA* 300mm Focus Ring
Posted By Sterby
Replies: 7
Views: 583
Only thing I know is related to the SDM plaque, S/N starting from 904xxxx are made with revised SDM design. One would assume they also improved smaller design flaws as well.
Or I got lucky, who knows?
Forum: Pentax SLR Lens Discussion 10-23-2017, 12:10 PM  
DA* 300mm Focus Ring
Posted By Sterby
Replies: 7
Views: 583
My DA* 300 has none of that slack, the focus ring is nice and smooth with the right amount of dampening. Manual focusing is not a problem. Although mine has a S/N starting with #906
My only problem is when on a strap, the lens is bouncing a sliding on my hip and all the movements of walking rotates the focus to minimum. I have to manually twist it back when I bring the camera up to my eye.
Forum: Lens Clubs 10-12-2017, 11:03 AM  
The 300mm plus lens Club discuss your long lenses.
Posted By Sterby
Replies: 27,038
Views: 2,303,226
Just noticed there is a used D-FA 150-450 at SRS Microsystems, if anyone is interested.
Forum: Lens Clubs 10-10-2017, 03:44 AM  
The 300mm plus lens Club discuss your long lenses.
Posted By Sterby
Replies: 27,038
Views: 2,303,226
I would add a tad bit exposure, around 0.2-0.3, raising the shutter speed would also help eliminate camera shake blurring.
Otherwise nice capture.
Forum: Lens Clubs 10-05-2017, 02:38 AM  
The 300mm plus lens Club discuss your long lenses.
Posted By Sterby
Replies: 27,038
Views: 2,303,226
On modern cameras there is no real difference between ISO 100 and 400. This makes for better images because you don't need to carry a tripod and a heavy lens, instead a lighter and darker design that you can shoot handheld and get closer, more stealthy.
Which you did, and got a great shot. ISO 100 doesn't matter here.
When I had the Bigma I shot at ISO 800 and above, just to get the shutter speed up. 1/1600s and above is what I used and only went down to 1/1000 when the light was really bad. Wasn't thinking in ISO but more in shutter speed.

There is a video on this on Youtube, "Paradigm shift in bird photography" or something like that. They explain this a lot better, this is where I got the idea.
Forum: Lens Clubs 09-30-2017, 03:23 AM  
The 300mm plus lens Club discuss your long lenses.
Posted By Sterby
Replies: 27,038
Views: 2,303,226
Specs? Of the plane of course
Forum: Lens Clubs 09-09-2017, 04:01 AM  
The 300mm plus lens Club discuss your long lenses.
Posted By Sterby
Replies: 27,038
Views: 2,303,226
You don't need the lowest ISO in bird photography, ISO 800 - 3200 is perfectly fine as it helps keeping your shutterspeed above 1/1000.
In your "high ISO test shot" with the great blue heron I can clearly see the feather details, as well with the others, bad lighting or not. Newer sensor technology gives us ISO invariance which helps the most keeping noise in control, even a little graininess is not a problem.
Keep up the good work, keep your shutter speed up and don't be afraid of higher ISO.

About that 150-450, it only adds weather sealing, sharpness and image quality is marginal improvement at best. Plus the Sigma HSM is more reliable than Pentax SDM and DC drive.
Forum: Lens Clubs 09-03-2017, 03:31 AM  
The 300mm plus lens Club discuss your long lenses.
Posted By Sterby
Replies: 27,038
Views: 2,303,226
Looks like you caught Jeremy Clarksons mini clone in that boat.
Forum: Sold Items 08-27-2017, 03:32 AM  
For Sale - Sold: Sigma APO 50-500 OS HSM
Posted By Sterby
Replies: 8
Views: 1,568
The lens is up for sale again.
Forum: Sold Items 08-14-2017, 03:47 AM  
For Sale - Sold: Sigma APO 50-500 OS HSM
Posted By Sterby
Replies: 8
Views: 1,568
Lens set aside for a buyer.
Forum: Lens Clubs 06-10-2017, 07:34 AM  
The 300mm plus lens Club discuss your long lenses.
Posted By Sterby
Replies: 27,038
Views: 2,303,226
Yes, I probably oversimplified things. The problem here is we are already sinking more into technicalities than we should. Regardless of lens resolution and sensors, what we want in an image is the contained information, the subject and the small details.
I can safely say most of us in this wildlife parts of the forums are doing this for the fun of it rather than for a living. Two main ways to go for the end result, the processed image, are either posting them online in an HD resolution image max., or printing them out for ourselves, mostly not bigger than A4, on home "photo" office printers and shiny photo papers. Saying that getting only 16MP in crop mode is pointless because the information we can extract in those two kind of end result is less than the 16MP sensor resolution.
I mean, you can have just as good a result in your home print from a 24MP or a 16MP photo. Putting on that crop TC on the K-1 will give the opportunity of the added reach and getting the shot.
Yes, it is lower resolution than all the "pro" gear can give or from an ideal FF 2xTC on the Sigma 500/4.5 but it gets you the image, and in your end result the difference is negligible, especially looking at it from a couple steps away.
Just look at the images I posted here, all of them on the soft side of the 50-500 Bigma or the bee-eater sequence on my 50-200 kit zoom, slightly missing focus in half of them.
Just today I got told by my dad that I'm too harsh on myself, judging what photos to put into print and what to discard, because for anyone else all the photos look superb. That tells me the information is there, people can still see it, so it makes no sense worrying about botching image quality with a TC or slightly missed focus but otherwise well timed and framed shots.

There is a lecture with Arthur Morris on teleconverters and long lenses, even stacking TCs or using softer lenses with TCs and still getting the shots. What he is telling there, at least how I understood it, is getting the framing, getting the subject closer is more important than crystal clear per-pixel sharpness. Yes, a clear image is nice, but a well composed image is good without being crystal clear. You don't have to shy away from getting a shot just because your current gear is not an ideal set of compromises.

To summerize my great wall of text: Greyser immediately responded to my suggestion of putting on the TC regardless it being a crop TC with a complaint on not enough MP. I think it is bullcrap and he is denying himself the potential shots.
Plus some rambling about technicality bullcrap.
Forum: Lens Clubs 06-10-2017, 04:41 AM  
The 300mm plus lens Club discuss your long lenses.
Posted By Sterby
Replies: 27,038
Views: 2,303,226
I think you are mistaking the technical MP resolution with the lens resolution, plus hanging up on a technicality "issue". The 24MP APS-C sensor has similar pixel pitch or resolution as the Canon 5Ds R 50MP FF sensor. There are very few lenses capable of resolving such a sensor.
APS-C 16MP is still more than you will ever need doing simple A4 prints or having images to display on the internet, not to mention most of the wildlife shots are cropped in to begin with.
Why not have the crop right away with APS-C crop mode and have the added reach of the 1.4x TC? You will still have the necessary information and details in the end result.
The lens resolution if different from the sensor, and most of the small details will cover more pixels, so even having a 24MP size image the contained information is much smaller. Not to mention the noise and resolution defects usually wash out in print, and on an A4 size print you will have less than 10MP information, depending on the paper and ink quality and the printers accuracy. Even less for an image meant to be displayed on a digital display and stored on the internet.
What I'm saying is, having the shot no matter what is more important than having to worry about a technicality number and not doing the shot because of it.
Forum: Lens Clubs 06-08-2017, 02:58 PM  
The 300mm plus lens Club discuss your long lenses.
Posted By Sterby
Replies: 27,038
Views: 2,303,226
Just use crop mode, 16MP is still plenty enough, plus you get (mostly) full AF coverage on the cropped frame.
Forum: Lens Clubs 06-05-2017, 12:38 PM  
The 300mm plus lens Club discuss your long lenses.
Posted By Sterby
Replies: 27,038
Views: 2,303,226
Make it 3
Forum: Lens Clubs 05-31-2017, 02:49 PM  
The 300mm plus lens Club discuss your long lenses.
Posted By Sterby
Replies: 27,038
Views: 2,303,226
You have to take into account the air shimmer over longer distances. Around 200m distance it is already very prominent, especially with smaller subject in the small details. 500mm on the 50-500 OS is nice and sharp when the air is still and your subject is closer.
Forum: Lens Clubs 05-21-2017, 04:13 AM  
The 300mm plus lens Club discuss your long lenses.
Posted By Sterby
Replies: 27,038
Views: 2,303,226
Totally mindblowing shots. Could you tell us more about how and where you took them?

---------- Post added 05-21-17 at 04:44 AM ----------



After the adjusting the 50-500, I though about checking my other lenses as well. For the Tamron 70-200 I used piece of broken brick that I placed on a metal mesh table in the backyard. Focusing on the brick face, the shallow angle of the metal mesh showed very well the plane of focus. I stood at around 10-15m away. Earlier on the 50-500 the lamp post was around 100m away on a planked fence, again showing a clean scale for the plane of focus.
I had a similar focusing chart printed out but I thought adjusting focus in closer distance might not give a linear reliability at long distance, so I looked for bigger "scales" that I didn't have to print and assemble.
Forum: Lens Clubs 05-20-2017, 01:08 PM  
The 300mm plus lens Club discuss your long lenses.
Posted By Sterby
Replies: 27,038
Views: 2,303,226
I certainly had usable BIF shots with screwdrive lens, specifically the DA 50-200 WR kit telezoom on my K-3. It's not a world star but it has it's usable range when it locks.
I'll have to go off-topic on this one since these were made at 200mm.

Bee eater mid hunt, you can almost feel the energy this bird is putting off









Flying so low to the ground making sharp turns, it's like a... highway... to the dangerzone-




(sorry)
Forum: Lens Clubs 05-19-2017, 04:53 AM  
The 300mm plus lens Club discuss your long lenses.
Posted By Sterby
Replies: 27,038
Views: 2,303,226
Have fun, and bring an extra shirt or t-shirt around bunched up to put it under the lens. Only trust the focus confirmation beep if it repeats, it took some time to dial myself in with the Sigma 400/5.6 manual focus lens.

Old shot to prove it is possible to get a good shot from a manual lens today.
Forum: Lens Clubs 05-18-2017, 03:15 PM  
The 300mm plus lens Club discuss your long lenses.
Posted By Sterby
Replies: 27,038
Views: 2,303,226
It's a hassle, you have to take a few shots, look at them then adjust the slider then take another shot, look at it etc... :)
Much like in the micro adjustment review here sans the fancy ruler/target adjustment gadgets here
Just look for a suitable target like a tree branch or lamp post. If you have railing or something that is at a shallow angle and shows off the focal plane it can help telling how much you are back or front focused.
The subject details and outline will tell the proper focus, but this is nit-picking, just look at the image at 4-8x magnification and you will be able to tell if the focus improved.

Edit: Oh, and use AF.S single point center point
Edit 2: Don't forget to set the adjustment that it saves it for that specific lens code and not for all of the lenses. C26, setting 3 - Apply One
Forum: Lens Clubs 05-18-2017, 02:57 PM  
The 300mm plus lens Club discuss your long lenses.
Posted By Sterby
Replies: 27,038
Views: 2,303,226
And this is where you are wrong, the K-3 AF system is very capable and precise with the right lens.
I had similar problems and then I decided to take the hassle of adjusting.
I used a nearby lamp post as target and it didn't take 5 minutes to finish and it made a big difference in my images.
Now I get mostly sharp subjects at 500mm that are 300m or more away, depending on the surrounding obstacles.
Forum: Lens Clubs 05-18-2017, 02:39 PM  
The 300mm plus lens Club discuss your long lenses.
Posted By Sterby
Replies: 27,038
Views: 2,303,226
Looking at the green heron photos they look like the water surface behind the heron is more in focus. On my Bigma I had to set a whopping -6 AF correction, maybe you need to adjust yours too.
Forum: Lens Clubs 05-08-2017, 02:43 PM  
The 300mm plus lens Club discuss your long lenses.
Posted By Sterby
Replies: 27,038
Views: 2,303,226
Good idea, but how would I know what plumage is abnormal? I just take photos of bird looking things, maybe some other animal looking things and do the ID later.
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