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Forum: Digital Processing, Software, and Printing 15 Hours Ago  
Non-Standard Crop Size in Post?
Posted By kiwi_jono
Replies: 17
Views: 403
Quite a bit of the time I use the aspect ratio as it comes out of camera (as the goal for me most of the time is to compose the subject to fit the frame.

That said I will often crop the photo to what ever "looks right" to me. I don't shoot for a specific aspect ratio generally. Even if print it out, it does not matter that much if the aspect ratio is different as the paper can be cut to size.
Forum: Troubleshooting and Beginner Help 2 Days Ago  
Samyang 14mm decentering?
Posted By kiwi_jono
Replies: 7
Views: 292
Ok thanks everyone, I have contacted the supplier (Supero) to arrange return.
Will report how I go.
Forum: Troubleshooting and Beginner Help 2 Days Ago  
Samyang 14mm decentering?
Posted By kiwi_jono
Replies: 7
Views: 292
Ok thanks btnapa and Ronald!
I was pretty sure this lens should be better but its great to have the confirmation!
Forum: Troubleshooting and Beginner Help 2 Days Ago  
Samyang 14mm decentering?
Posted By kiwi_jono
Replies: 7
Views: 292
Hi I just got a Samyang 14mm for use with my K-1 and it looks to me like its decentered (the focus plane is certainly tilted anyway).

Thought I would get some other opinions before I send it back because it will cost shipping and also, in theory, if supplier deems it as "in tolerance" they can charge a fee! Although hopefully it should pretty obvious its wrong and as it is I'm not going to be happy with the lens anyway (I have done several tests against perpendicular subjects and unless I stop down to say f11, there is always a blurry part to the image somewhere).

In the following image I made sure I was square to the subject then I achieved focus on the Right hand edge (was aiming for the centre but it shows the problem quite well as is), but the centre and especially the Left edge has more blurring. Even at f5.6 the Left edge does not look that great (although middle and especially RH edge is sharp at f5.6).

What do you think?

1. Whole image @f2.8 (even at this small size you can see softness to the left!)
2. f2.8 - RH edge (in focus)
3. f2.8 - Middle
4. f2.8 - LH edge
5. f5.6 - LH edge
Forum: Pentax Medium Format 03-13-2018, 12:46 PM  
Medium format and the masses
Posted By kiwi_jono
Replies: 60
Views: 2,225
From what I have heard, a significant chunk of MF camera cost is in its sensor and the electronics needed to support it. Something to do with to sensor production yields rates being much lower as the size of the silicon goes up.

For example when manufacturing CPUs, normally quite a number are made on each plate but when they are tested some may be rejected - as the size of the silicon used on the plate grows then there is a higher chance of it being rejected. I'm assuming the same would apply to sensors (but I'm sure someone here will know better).

So I'm thinking with current technology it would be difficult to product a MF camera priced for the masses but who knows in the future?
Forum: Pentax SLR Lens Discussion 03-13-2018, 12:34 PM  
Broken HD DA 55-300mm F4.5-6.3 ED PLM WR RE
Posted By kiwi_jono
Replies: 15
Views: 837
Wow - thats sad.
I have a SMC Pentax-DA L 55-300mm F4-5.8 ED, that has proven itself amazingly tough (even if its got a plastic mount) - 4 years ago it fell out of the side flap of my camera back, still on the camera, and landed (lens pointed down) on the concrete garage floor! Nothing broke (or even noticeably marked) and still use it today. I realise I might have been lucky but still its impressive.

Hopefully this is not a sign that newer models are less durable.
Forum: Pentax SLR Lens Discussion 03-13-2018, 02:06 AM  
A larger database for Lens Resolutions?
Posted By kiwi_jono
Replies: 31
Views: 1,006
Mind you that chart is from FF / Film days. So maybe its possible that on a FF camera you may get best average resolution across the sensor at f8 (even if centre peaks at around f5.6 say)?
Forum: Pentax DSLR Discussion 03-06-2018, 03:28 PM  
Sharp everyday lens for K-1?
Posted By kiwi_jono
Replies: 26
Views: 1,487
Depends on your budget really.
Two of my most commonly used general purpose lenses are the DFA 28-105 and FA35 f2 (which I like much better on the K-1 than I did on the K-5).
Forum: Pentax SLR Lens Discussion 03-02-2018, 01:52 PM  
How do you carry your lens in a camera bag ?
Posted By kiwi_jono
Replies: 19
Views: 728
I just have a Lowepro camera pack but I'm used to a pack and it suits me fine (has enough room for a realistic kit while forcing me to rationalise the lenses I take on an outing).
I just put the lenses straight into their padded partitions and so far never had an issue (but most of them are a reasonably snug fit at least).
As far as stacking primes go, I wont stack them unless either one of the primes is in its bag or I have added some padding between them.

I generally put them with K mount down - partly because on the older lenses you could read what the lens is (not so much on modern lenses) but also because I simply never considered putting them the other way! Now I have thought about it possibly mount up would be quicker to exchange and also reduce the chance of pulling lens cap off when extracting the lens?
Forum: Pentax News and Rumors 02-25-2018, 03:20 PM  
Australian K-1 Owners
Posted By kiwi_jono
Replies: 23
Views: 1,302
Thats great to know - I just hope NZ follows suit.
Forum: Pentax News and Rumors 02-21-2018, 10:08 PM  
The official presentation (Ricoh) of the Pentax Mark II
Posted By kiwi_jono
Replies: 331
Views: 26,655
The upgrade offer looks fantastic - if they offer it in NZ I'm keen to upgrade.
Forum: Pentax SLR Lens Discussion 02-18-2018, 05:37 PM  
An Ultra Achromatic Takumar 85mm 4.5 is up on EBay at the moment
Posted By kiwi_jono
Replies: 10
Views: 582
Wow - would love to have that.

Sadly, as a collectors piece and at that sort of price, I can't see it getting any serious use.
Forum: Troubleshooting and Beginner Help 02-18-2018, 03:28 PM  
To repair or not to repair???
Posted By kiwi_jono
Replies: 10
Views: 480
Oh dear thats not ideal!
Plenty of good advice offered already.
No doubt the DFA 100 WR is a great lens (and even has weather sealing!) - although you might miss the focus limiter and friction controls if you use them (I love them on my FA 100 anyway). Optically there is very little difference between DFA and FA from what I have seen from reviews.
Forum: Pentax K-1 02-17-2018, 06:50 PM  
My Canon to Pentax experience: Why I love Pentax, but might still leave.
Posted By kiwi_jono
Replies: 46
Views: 3,410
I agree with Sandy.

For a start I don't think Ricoh is likely to go out of business any time soon because only a small proportion of their business is cameras anyway. Yes its possible they could stop making DSLRs due to the dwindling mark size of DSLRs but you can pretty much say that about any of the manufacturers I think. Arguably Ricoh has a small market share compared to Nikon, Canon and even Sony, and therefore this could make them more vulnerable, however don't forget Ricoh is not a small and has proven resilient.

I think for studio and landscape photographers, Pentax now has a compelling system but that does not mean the system can't be used for sports or anything else for that matter. I understand that Nikon and Canon do a much better of supporting professional photographers though.

I certainly hope 3rd party manufacturers do come around to supporting Pentax again but only time will tell for sure.
Forum: Pentax News and Rumors 02-14-2018, 02:34 AM  
Pentax K-1 Mark II DSLR camera detailed specifications leaked
Posted By kiwi_jono
Replies: 389
Views: 31,559
Well the higher ISO capability is always welcome. Other changes I noted from comparing specifications:
* SR option on / off option for pixel shift. Maybe pixel shift can be used handheld?
* It appears that battery life could be a bit shorter (760 shots down to 670 shots). Possibly due to extra hardware?

I'm happy with AF on my K-1 (fine for the shooting I do) but improvements would have been nice to make some of the reviewers happier!
More importantly for me I would have liked to see something further done to improve shutter shock (beyond ECS in LV) so I could use OVF (along with my light FA primes) with impunity. As it is I use LV with ECS enabled a lot more than use to.

In any case sounds like improvements may be useful in real life although perhaps a small decrease in battery life is not so welcome.
Forum: Pentax K-1 02-13-2018, 12:46 PM  
Ready to buy first full frame camera - would appreciate some advice
Posted By kiwi_jono
Replies: 40
Views: 1,684
Some great points raised already but just to add my 2 cents:
* Agree with other that DFA28-105 is great option to start with. I still use mine (even though I prefer primes) as its convenient weather resistant lens that performs better than you would expect for such a lens!
* While the FA43 is a good lens there are plenty other prime lens options to consider too. I particularly like my FA35 f2 and apparently the FA31 Ltd is even better. Then theres the FA77 and FA50 f1.4 (have it and use it). And for second hand FA lenses there are lots of options like FA20, FA*24, FA28 (have it and its useful), FA100 macro (have it and like it!). There are cost effective alternatives for ultra wide angle too like the Samyang 14mm f2.8 (manual focus though) which is a good performer.
* Also don't forget older second hand lenses either. Pentax has great backward compatibility and you can learn a lot from using old (cheap) manual focus lenses (while also having good image quality and in some cases interesting character!). For example I have an old SMC M 17mm f4 fisheye that I use quite a bit on the K-1.
Forum: Pentax SLR Lens Discussion 02-13-2018, 12:19 PM  
Is my FA35 2.0 as sharp as it should?
Posted By kiwi_jono
Replies: 35
Views: 1,333
I have the FA35 on my K-1 and its probably my most used lens. I would expect it to be sharper than in those images (mine is) - although there a few things to check first:
* The obvious - use a sturdy tripod and remote or self timer
* Try focusing in LV (for OVF I needed to fine tune the focus on FA35 to get the best out of it)
* Turn ESC (electronic shutter) on in LV and try that too as, due to its light weight, I have seen effects of K-1 shutter shock (1/90 - 1/250 shutter speed range) which might explain some of this.

Otherwise is should be a great lens. Its so easy to carry around and very good performer.
Forum: Pentax K-1 02-10-2018, 02:40 PM  
Just tried out the K-1
Posted By kiwi_jono
Replies: 27
Views: 2,137
Well the mathematicians around here will probably be screaming - "No! Pentax's gain is undefined! Dividing by zero is not infinity!"

No question its a great camera and note that its not heavy when used with those small FA primes!
Forum: Pentax SLR Lens Discussion 02-09-2018, 04:31 PM  
15 mm f/4 limited
Posted By kiwi_jono
Replies: 31
Views: 1,684
If you don't mind manual focus there is the Samyang 14mm f2.8 (it does support auto exposure on Pentax though). Its still a bit big (especially compared to the DA 15mm Ltd!) but quite a bit smaller (and half the weight!) of the DFA 15-30.

I'm going to get a a Samyang 14 shortly as its well regarded, I don't mind manual focus and in any case at 14mm focus should not be that critical. Oh and compared to the DFA its very cheap if you want to give it a try. No weather sealing though but then the DA 15 Ltd doesn't either.
Forum: Pentax DSLR Discussion 02-03-2018, 10:59 PM  
Beware the neck strap!
Posted By kiwi_jono
Replies: 16
Views: 1,220
Very pleased to here the camera and lens came out so well!

While I have used neck straps for many years and never had one loosen at all (that I can remember), I don't normally use them anymore.
A risk with neck straps is that if you are moving the camera around without the strap over your neck (e.g. moving the camera or taking it off etc), there is a chance it might get hooked on something (and wrench the camera out of your hands). Over the years there have been so many postings on this site where someone has caught the strap on something and dropped the camera (or something else has caught on the strap and pulled the camera off the table etc). Its happened to me (fortunately without damage). So either you have to be fanatical about keeping you camera in the bag OR the strap over your neck at all times (no exceptions) or look for another solution. Personally I use a wrist strap and happy with it so far!
Forum: Pentax SLR Lens Discussion 01-31-2018, 11:12 PM  
35mm f2 AF
Posted By kiwi_jono
Replies: 4
Views: 552
Its still a screw drive but the FA35 AF is quicker than the 50.
Forum: Pentax DSLR Discussion 01-30-2018, 01:04 PM  
Measurbating sites and reality
Posted By kiwi_jono
Replies: 19
Views: 1,381
Well to me both sites are telling me the same information (even if the summaries & conclusions are a bit different).
For real world use when it comes to noise / high iso performance, I find the "Print" comparison options are useful, as this gives you a good idea of what you could produce as an end product (and a more even comparison - irrespective of resolution).
The 3 cameras have nearly identical signal to noise for real world use. The two Sony cameras appear to do some sort of NR from ISO 51200 (which due to their inaccurate ISO calibration is actually only about ISO 35000!) which improves signal noise ratio - which is not obvious on the DPR site images for some reason.

Apart from resolution there is very little between them.
Forum: Pentax SLR Lens Discussion 01-28-2018, 03:09 PM  
Filters do you use them & which ones and why & when???
Posted By kiwi_jono
Replies: 35
Views: 1,048
I don't often use filters. General points for me:
* Polariser can be useful with scenes involving water. E.g. you want to see whats in the water rather than the reflection off the water (or vice versa!). Can sometimes also help contrast and colour saturation. But I don't use a polariser as mater of course.
* ND filters can be helpful to achieve longer exposures but I have had issues with colour shift when using ND filters and so you should avoid the cheap ones (even then I often run into problems for some reason).
* Graduated ND filters are great for taming a bright sky in landscapes. Again I have issues with cheaper filters. Also I find that shooting RAW and with modern cameras like the K-1, KP etc, you can achieve a lot in PP using digital graduated filters. When you take the photo though you need to expose for the sky (which the camera will typically do).
* Personally I'm not a huge fan of UV or protective filters. I have a couple of lenses with them (my Tamron 70-200 for example) but would not use them unless I was: a: Using a really good filter with good coatings (more expensive) and b: had a good hood on the lens. In my view, always using a hood is good for your images, provides a degree of protection of the front element, and helps reduce amount of dirt that gets on the front element (reducing the amount of cleaning you do).
Forum: Troubleshooting and Beginner Help 01-27-2018, 01:55 PM  
K-1 SD card problem
Posted By kiwi_jono
Replies: 10
Views: 554
+1 , I have had problems too.
I wish they would sell the cards with fixed tabs as I have never used the write protection tab personally.
Forum: Pentax SLR Lens Discussion 01-23-2018, 12:45 AM  
Full Frame travel zoom
Posted By kiwi_jono
Replies: 19
Views: 975
If 105mm is long enough then I'm +1 for the DFA28-105. Just took mine on a trip up north and it did an incredible job. I also took a FA35 (for indoor shooting and shallow depth shooting) and while it was useful, I could have got by without it on this trip.
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