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Forum: Pentax SLR Lens Discussion 1 Day Ago  
KP and DA300 x1.4
Posted By Lowell Goudge
Replies: 13
Views: 667
You need to remember that with the TC you need to shoot higher shutter speed to reduce camera shake, and stabilization is not as effective for BiF because the camera is always moving, in addition, you need to boost iso due to the additions 1 stop the TC costs. Combining the additional stop for reduced light, and the additional stop for focal length when hand held and shake elimination you have lost 2 stops of light, this pushes the iso, which adds grain.

TCs have their use but nothing is free
Forum: Pentax DSLR Discussion 1 Day Ago  
All I want from Pentax is
Posted By Lowell Goudge
Replies: 36
Views: 1,336
So you are saying I should spend $2K plus on a DFA150-450 just because Pentax doesn’t want to spend a few dollars literally adding a feature to allow me to use my sigma 1.4x and 2x TCs with my 70-200/2.8.

What saved Pentax in the DSLR market was back compatibility. Your attitude is like canon, who have changed slr lens mounts 3 times, with no back compatibility and have now discontinued all DSLR support and development.

Pentax made a choice, to stay in DSLRs they either need to continue to support their installed base or they will die any way.

Your suggestion will only kill them off earlier

And by the way, if P-TTL was the be all and end all why would I be asking for TTL, because for wild life it works better, plain and simple


Aside from the above, why wouldn’t they look to cater to people who remain with them, for example, since they don’t make a single full frame TC, why not allow for use of a TC in their software we are not denying them of any sales, since they don’t sell what we are using any way. If they came out with a 1.4 x and 2 x TC with aperture and focal length correction built in, I would likely buy one, along with a ton of other users who also use third party lenses. The reason we all have these lenses in the first place is Pentax never offered them at the time.
Forum: Pentax DSLR Discussion 1 Day Ago  
All I want from Pentax is
Posted By Lowell Goudge
Replies: 36
Views: 1,336
For lenses in a semi wide to portrait 24-85mm for example, auto mode is fine, but for wild life especially, shooting 300-500 mm focal lengths, you run the risk of burning out the subject isolated against a distant background, because the sensor is seeing a much wider field of view than the lens

---------- Post added 04-17-21 at 08:30 AM ----------



It really did start about the flash capability, and especially about the woes of P-TTL for wildlife, but I donít mind if it wanders a little.

My gripe is that save the DA 560, and the 150-450, there are not a lot of wild life options, which can combine to use flash, flash is an important part of wildlife , especially birds, and generally can be useful for small birds inside the min focus distance of the DA560.

I have an excellent sigma APO 70-200/2.8 with 1.4 and 2x TCs, and also a K300/4 and 1.7x AF adaptor. Both of these worked great with my *istD and AF500FTZ but every flagship body since has denied me the Susie of these lenses with flash because the bodies donít allow you to input the TC so as the body can make a correction for flash, or for the K300 use TTL.

There are a lot of Pentax shooters that have left because the support for wildlife shooters has left them wanting, the ones who stayed are handicapped,

There are many ways to crack the nut, TTL is one, aperture connection, de crippled Kmount is a second, or at least accept inputs for a TC to correct aperture and FL for flash and SR use is a third.

I would take any one of them,
Forum: General Photography 2 Days Ago  
A very specific bag requirement.
Posted By Lowell Goudge
Replies: 31
Views: 889
I think between the three of us, we have the same perspective on a street kit, which is why I raised the point..

Many times I see inquiries about carrying gear, and I take a step back and look at the difference between transporting from home (point A) to a temporary base (Point B), and what you do, near and around point B. The two demands can be quite different. Because for many of us when travelling we don’t take everything all the time when at your temporary base. But again that’s a personal choice.

For every thing the OP is carrying, if it is all in his shoulder/sling bag, it will be a fairly heavy load probably approaching 5-7 kilos, and while I don’t really have an issue (I carry my DA650 and K1 on 1-2 hour 5-10k walks all the time) a lot of people have issues with a similar weight.
Forum: General Photography 2 Days Ago  
A very specific bag requirement.
Posted By Lowell Goudge
Replies: 31
Views: 889
I would take a step back and rethink the kit. When I am doing street photography, my typical approach is below about 85 mm. If I am shooting my M42 kit on crop sensors, this is a zenitar 16mm/2.8 fisheye, something in the 28-35 range (of which I have about 6 different legacy options, and an 85/1.9.

If I am shooting with AF lenses, I usually go with a sigma 10-20 on K5 and tamron 28-75/2.8 on my K1 . Either way, I have a camera in my hand and either a couple of lenses or the second body with lens attached (plus spare batteries, cell phone, memory cards etc) in a small fossil messenger bag. It looks like anything but a camera bag.

There is no need to take big and long lenses on a city walk about, and if you plan to do so, then it is a specific shooting (IMO)
Forum: Pentax SLR Lens Discussion 2 Days Ago  
Hack: Using M lenses in A mode
Posted By Lowell Goudge
Replies: 17
Views: 838
This makes no sense, wide open should be perfect if. You coded both min and max aperture values.
Forum: Pentax SLR Lens Discussion 3 Days Ago  
Hack: Using M lenses in A mode
Posted By Lowell Goudge
Replies: 17
Views: 838
It is in the link I I posted above, I believe I actually wrote those exact words

---------- Post added 04-15-21 at 07:53 PM ----------


I might have a plot somewhere of the exposure error as a function of aperture, it is not a constant error but an error that changes as a function of aperture selected, it is only correct wide open and fully stopped down, it is sort of a circular error as a function of F-Stop, curving to a 2 stop error at the mid aperture
Forum: Pentax SLR Lens Discussion 3 Days Ago  
Old AF lenses and camera firmware update
Posted By Lowell Goudge
Replies: 10
Views: 679
I have the same vintage 70-200/2.8. It is a great lens but I do notice that especially when used with the 2xTC, thee is enough backlash in the drive mechanism that the K1MKII can be prone to a little hunting around perfect focus.

It also might be just age, I have used that lens for almost 20 years, it has taken literally tens of thousands of shots, been dropped banged around, and has worn to the point where some of the soft sort of rupperized finish has worn through. Maybe it is just showing age and wear
Forum: Pentax DSLR Discussion 3 Days Ago  
All I want from Pentax is
Posted By Lowell Goudge
Replies: 36
Views: 1,336
No that is not the case any more. It was with the *istD series cameras, but starting with the Kseries DSLRs only P-TTL was available.

The *istD actually has the most complete flash functionality of any DSLR in the pentax line up.

With an AF540 FGZ it could automatically select the most capable flash mode depending on the lens. A series and later would be P-TTL non A lenses would be TTL

With the AF500FTZ FTZ it would automatically shoot TTL regardless of lens attached

It could even use the internal flash as a flash master in high speed sync, a feature discarded soon after as well.

It truely defined what a flagship should be, the maximum possible compatibility with legacy equipment as part of a real system

Is it unreasonable to ask only for what we used to have???
Forum: Pentax SLR Lens Discussion 3 Days Ago  
Hack: Using M lenses in A mode
Posted By Lowell Goudge
Replies: 17
Views: 838
the issue is not that you can drill out the contact pattern of A lenses in K/M series lenses, that part is easy, the issue is that on K and M series lenses the aperture mechanism does not necessarily follow a linear relationship if F-Stops with lever displacement, it is simply an on off switch for the aperture

many years ago i modified my XR Rikenon 50mm F2.0 to have the correct "A" contact pattern, and while i got the ability to control the aperture in Av mode on the body, the exposure accuracy was terrible. i will try to find the post i did at the time

---------- Post added 04-15-21 at 01:27 PM ----------

here is the link to this subject from years ago

Converting K/M lenses by adding an A pin? - PentaxForums.com

---------- Post added 04-15-21 at 01:29 PM ----------

Note however, o did something like this for the tamron 200-500 / 5.6 with KA mount because the KA adaptor only has the correct contact pattern for lenses up to F4.0 and i managed to paint over with hard nail polish, the correct spot to convert the adaptor to F5.6 and use flash with this huge zoom, and get correct flash metering. BUT this is a special use case
Forum: General Talk 3 Days Ago  
Got vaccinated today. Anyone??
Posted By Lowell Goudge
Replies: 730
Views: 27,047
with respect to this point, anti maskers and people who have resisted for what ever reason to isolate socially/physically have in the past led to increased numbers of reproductive cycles of the virus, and as others have agreed the more reproductive cycles the more chance for variants.

anti vaxers, going forward will continue in the same path leading to more and more reproductive cycles of the virus and risk of variants.

i dont think that can be disputed.

the only way to stop variants is to stop the spread QUICKLY

so i dont get why you therefore dispute my statement.
Forum: General Talk 3 Days Ago  
Got vaccinated today. Anyone??
Posted By Lowell Goudge
Replies: 730
Views: 27,047
Warning, this is a rant

If we look at the issue in total.

Variants occur because of uncontained spread and numerous regeneration cycles of the virus. Uncontrolled spread is largely the fault of the population not following proper protocols. Ok I understand not everyone has a financial choice, many workers simply cannot work from home, etc....

But the result could have been different if people did in the past, properly followed public health recommendations about social distancing, and masks, there would be less variants.

Going forward, the more people we vaccinate, the slower the disease spreads and the less chance of variants.

So the bottom line is variants are the result of anti Vaxers and anti maskers. Period.

Now the reason that the drug companies don’t know how effective over time the vaccine will last is they can only report what they can measure, To date, they have 6 months data, so that is all they can say. That should not be a reason not to get vaccinated, or to spread doubt on the vaccines.
Forum: Pentax DSLR Discussion 3 Days Ago  
All I want from Pentax is
Posted By Lowell Goudge
Replies: 36
Views: 1,336
It is not a question of use with old flashes, TTL is better for some applications regardless of age of flash, specifically wildlife, aside from that, it is not just a question of working with old flashes, it is a question of also working with legacy Pentax lenses and teleconverters because the camera cannot correct exposure for when a teleconverter is used, unless the teleconverter corrects for aperture, the Pentax DA 1.4x does this but it is a cropped sensor only TC, not full frame and is recently released only, we have gone years with cameras that do not or did not support the commercially available products to be used with their cameras.

The fact is, it is not a question of an outdated product, it is a question of cost only, because they use the cameras open aperture metering sensors to perform both functions. But it is a cost of what? A few dollars. What was the cost of the K1 MKII. Several thousand dollars. I can see it not being used in. Consumer bodies like the K70 , but for flagship products???
Forum: Pentax DSLR Discussion 4 Days Ago  
All I want from Pentax is
Posted By Lowell Goudge
Replies: 36
Views: 1,336
A long long time ago, in a galaxy far far away..............

Pentax made DSLRs with both TTL and P-TTL flash.

Why, at least in a flagship model canít we have both again

It has so many advantages, for using legacy lenses, to shooting with a teleconverter, to wildlife where it is much more accurate than P-TTL

Either that or at least add a TC input option to have the body correct for direct feed through TCs for not only correct aperture reporting for flash exposure but also focal length for shake reduction

While the former would require hardware the latter is simple software.
Forum: Pentax SLR Lens Discussion 4 Days Ago  
Poll: Another DA* 300mm vs D FA 150-450mm thread - specific question about resolving power
Posted By Lowell Goudge
Replies: 20
Views: 1,178
My problem is ducks on water and animals in the grass. I am never sure, when shooting at a flat surface and a low angle exactly what the focus sensor has locked onto, especially when shooting hand held, as I do. That is one problem with in body stabilization. Shake reduction might be good, but you still have a moving image in the view finder, where as optical stabilization might give a fixed and stable image for the focus sensor to lock onto.
Forum: Pentax SLR Lens Discussion 5 Days Ago  
Poll: Another DA* 300mm vs D FA 150-450mm thread - specific question about resolving power
Posted By Lowell Goudge
Replies: 20
Views: 1,178
I put scenario 4 because without knowing the detail level of the subject it is really hard to discuss focusing on distant subjects., but I would generally put a prime over a zoom all else being equal
Forum: Pentax SLR Lens Discussion 5 Days Ago  
Where next after 55-300?
Posted By Lowell Goudge
Replies: 21
Views: 1,075
The unfortunate truth is that if you want autofocus over 300mm from any maker there are no cheap options
Forum: Pentax SLR Lens Discussion 5 Days Ago  
Where next after 55-300?
Posted By Lowell Goudge
Replies: 21
Views: 1,075
interestingly enough, i have written my return of experience in response to another post

hand held - PentaxForums.com
Forum: Pentax SLR Lens Discussion 5 Days Ago  
hand held
Posted By Lowell Goudge
Replies: 12
Views: 793
I have shot with a variety of lenses specifically for birding, and have the following observations

k300/4 with 1.7xAF adaptor. Works well when stopped down, best for working in close with small birds, and especially when using flash. (*istD) less impressed but not really spent much time with it since my K7, but a very light weight combo at 1.1 kilos for 500 mm. The lens is prone to lateral and some longitudinal CA and also purple fringing, but as long as you are shooting with minimal back lighting, it can give good results.

Sigma APO 70-200/2.8 EX (non DG non macro version released in 1999) I have used this with 1.4x and 2x Sigma APO TC’s on every body I have owned from *istD, K10, K7, K5, and now K1 MKII. Works well when AF hits, but especially the K1 it seems to hunt on micro adjustments just a little, the lens struggles a bit at distant ducks out several hundred meters. This has been my main birding set for almost 20 years but using it with flash is difficult since Pentax does not compensate the P-TTL flash for the TC and the AF540FGZ only allows for +1 stop in flash mode, not the+2 needed for the 2X TC. Shoot exclusively hand held. This lens with the 2x TC is in the order of 1.9 kilos.

Tamron Adaptall 2 SP 200-500/5.6. This lens is tripod bound and impossible to hand hold while making zoom or focus adjustments, a good lens but.... not for a walk about, even though it is relatively light at 2.7 kilos. This lens can produce good images, even at distant subjects, works well with a 1.4 x TC (I use sigma APO 1.4x) but can produce extreme fringing with back lit situations.

Pentax DA 560/5.6. My current birding lens. Had it for about 9 months now, and due to the pandemic, there is not much else to do but go birding. Literally shot thousands of photos, and go out almost daily walking 5-10 km with my wife and dog while birding. Although this lens is 3.7 kilos, I carry this cross body over the shoulder, and hand hold all my shots. Note this is not necessarily for everyone as I know a lot of people would have difficulty managing this weight, but it works for me.


From my experience, shooting with just 300 mm works fine for large birds, especially waders, geese, and close up with song birds, and smaller ducks, but will leave you wanting for more eventually. But if you struggle with weight, a 300 mm prime is likely the lightest way to get a relatively fast tele for birding, and will be a useful second lens, even if you go for something longer in the end. You could even add a 1.4x TC to it and probably still get AF confirmation. The only issue, and I see this with my old sigma screw drive, is the AF seems to hunt just around the perfect focus point, likely due to the lag and backlash in the screw drive mechanism. It didn’t bother me until I got the DA560. The internal focus motor has me less than satisfied with the hesitation In Focus confirmation using the older screw drive technology
Forum: Flashes, Lighting, and Studio 6 Days Ago  
AF500FTZ hot shoe issue
Posted By Lowell Goudge
Replies: 5
Views: 364
No it works just fine on electronic cameras. I have used it on the PZ1 and *istD
Forum: Flashes, Lighting, and Studio 6 Days Ago  
AF500FTZ hot shoe issue
Posted By Lowell Goudge
Replies: 5
Views: 364
I would bet the flash was modified to work in manual/auto flash mode only, for a non Pentax camera
Forum: Pentax SLR Lens Discussion 04-06-2021, 12:29 PM  
Help: Samyang 14mm vs Irix 15mm
Posted By Lowell Goudge
Replies: 14
Views: 699
I have the Samyang 14/2.8 ( branded as vivitar 13mm/2.8 but same lens), and while I like it, and have shot on full frame, you need to be mindful to the barrel distortion.

Check the image archive, my shots are from the PZ1

https://www.pentaxforums.com/forums/130-lens-sample-photo-archive/251139-samyang-14mm.html
Forum: Pentax SLR Lens Discussion 04-03-2021, 02:52 PM  
Should I buy?
Posted By Lowell Goudge
Replies: 12
Views: 959
+1
the 55-300 is highly regarded as an every day normal to tele, and the extra 100 mm reach is really worth it.

But it depends on whether a WR lens is needed. I am looking to replace my Tammy 28-75 /2.8 only because it is not WR and I have fogged up internally several times in inclement weather
Forum: General Talk 04-03-2021, 01:52 PM  
Got vaccinated today. Anyone??
Posted By Lowell Goudge
Replies: 730
Views: 27,047
And with COVID we donít yet know the full long term impacts

---------- Post added 04-03-21 at 04:53 PM ----------



Considering thee is absolutely no data to support your theory either way at this point, what do you suggest. Kill off several million and hope?
Forum: General Talk 04-03-2021, 09:06 AM  
Got vaccinated today. Anyone??
Posted By Lowell Goudge
Replies: 730
Views: 27,047
Except that the mortality rate per case for COVID is 10 times higher than the measles, and mumps, and 100-200 times higher than chicken pox, so COVID-19 is not really a nuisance disease and not a “right of passage” either.
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