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Forum: General Talk 04-10-2010, 12:59 PM  
Announcing the PentaxForums Million-Post Giveaway
Posted By Gooneybird
Replies: 1,243
Views: 188,724
Count me in for the 1,000,000 login. Good luck to all.
Forum: Digital Processing, Software, and Printing 09-23-2009, 03:48 PM  
Canon 8800f or Epson V500 scanner
Posted By Gooneybird
Replies: 8
Views: 13,834
Based on the astounding results I've seen on a friend's Canon 8600 (the predecessor) I would prefer the Canon 8800f. But upon reviewing its requirements for software, it demands Windows XP or Vista. I have stood my ground for years, I will not use either, rather my Windows 2000. So, it looks like Canon has lost a loyal customer, for their support of Microshaft.
Forum: Pentax DSLR Discussion 08-28-2009, 03:54 PM  
Rant about Pentax's One Legged AF and a weird quirk that I wish would go away
Posted By Gooneybird
Replies: 74
Views: 10,346
This may be out of order, but I decided it might be of interest, and not related to most of the previous posts.

My K10D does not do a very good job of AF with the 180mm Sigma macro lens. But after buying the Sigma 1.4X Extender, it does a significantly better job in AF.

As a result when shooting without the 1.4X Extender, I always use MF. And when shooting with the Extender, I let the camera do it via AF.

Just my results.

Olin
Forum: Pentax SLR Lens Discussion 06-21-2009, 09:58 AM  
How is 28-300mm lens for Pentax?
Posted By Gooneybird
Replies: 5
Views: 4,558
I have what I presume is the newer version of this same lens, having bought it about 18 months ago, and paid more than $300 for it, to B & H. In my opinion it's a good lens for most purposes. Especially from the lowest focal length out to about 200 mm. From there on to the 300 mm, the sharpness is not equal to the lower 2/3, but it's still very usable and I consider it an overall good buy.
Forum: Pentax DSLR Discussion 05-25-2009, 01:52 PM  
Looks Like I will be getting the K7
Posted By Gooneybird
Replies: 40
Views: 7,419
I'm not qualified to judge how strong Loctite is, but since you have access to aviation epoxys, I think you can fill the stripped holes with one of those and let set briefly, then insert the screws and let set for at least 24 hours. There are some exceptionally strong, 2 part epoxies out there.

Olin
Forum: Photographic Technique 03-08-2009, 06:29 PM  
P-TTL preflash
Posted By Gooneybird
Replies: 8
Views: 4,522
Taking a slightly different viewpoint - my problem with the pre-flash on my K10D is that I cannot turn it off at my choosing. There are times I use an external slave flash with an optical trigger, and the pre-flash (from the onboard camera's flash) always triggers the slave before the shutter is opened. My contacts with Pentax confirm there is no option available to turn it off, so I bought a hot shoe adapter and a hot shoe flash unit to mount on the camera. This does NOT put out a pre-flash, and the slave flash works fine. Of course, the pre-flash has some useful benefits at times also, but not in my example.
Forum: Pentax Camera and Field Accessories 02-28-2009, 02:22 PM  
Afew words about Katzeye
Posted By Gooneybird
Replies: 16
Views: 3,608
I'm unable to answer your question, but I have a little information that might help you avoid making an unwanted mistake.

First of all, different models of cameras (as well as brands) have different shim situations. My Pentax K10D does not use shims at all, and all I had to do when swapping out the glass screens was to be sure the new Katz Eye was properly oriented and in the metal frame correctly. On the other hand, a friend of mine who ordered a Katz Eye (after I did) for his Nikon D300 ran into a shim problem. If I recall correctly, he failed to observe that it already had a shim in place and let it fall out when removing the original glass. It was later that he discovered this mistake, and put the missing shim back in its proper place - then things worked as they should.

Now, I cannot help you with acquiring shims, but since you did not indicate what camera you are planning to replace, I felt it worthwhile to point out that you might not need any such. Perhaps you should contact the lady at Katz Eye with your question, and I'm sure she can give you the answer for your particular camera.

Olin
Forum: Photographic Technique 02-14-2009, 10:18 AM  
Manual focusing using red AF confirmation dots?
Posted By Gooneybird
Replies: 17
Views: 5,339
Not wanting to add further confusion, but I will definitely endorse the "get a split image" statement. I recently bought the Katz Eye for my K10D, and it has made an enormous improvement in the percentage of my shots in focus. This includes lenses that are AF and those that are not.
Forum: Site Suggestions and Help 02-14-2009, 07:40 AM  
News Special Giveaway: 16Gb SD card for 500,000-post milestone!
Posted By Gooneybird
Replies: 273
Views: 16,641
Just adding my post to the collection. Fair weather to all.
Forum: Pentax Camera and Field Accessories 02-06-2009, 04:42 PM  
Split screen focus...
Posted By Gooneybird
Replies: 169
Views: 37,118
This is an update, haven't done so on this subject in some time. As posted earlier, I installed the Katz Eye, without Optibrite, several weeks ago and started testing it with various lenses.

My initial test were extremely encouraging with all my normal lenses. Then, I finally got around to trying the K10D and Katz Eye with my Swarovski AT-80-HD spotting scope, using the Pentax 40mm pancake lens. This became the break point. There was no blackout problem with the eyepiece set at 20X. But as I increased the magnification of the eyepiece, it was clear there was soon a blackout problem. Anything from over 30X to the max of 60X was essentially not usable for manual focusing. That the split prism worked at all is clear evidence that all the negative claims that I would not be able to use it - were WAY overstated.

Just to be fair, I helped a friend who has a Kowa 60mm spotting scope, by attaching my camera to his scope with his T-adapter. This gives the equivalent of an 800 mm lens (lets not start snipping about what equivalent means now). Any way, even this combo was USABLE but required lots of patience to get things focused. IF this is the primary reason to justify a split image focusing screen, then I would not recommed it. So - I think the Katz Eye really does more than I really have any right to expect, but let's not go overboard!!!

Olin
Forum: Photographic Technique 02-06-2009, 03:51 PM  
Why Shoot in Manual?
Posted By Gooneybird
Replies: 52
Views: 10,263
This almost exactly spells out how my strategy has evolved. And to add to this "do it yourself" mentalilty, I recently bought a split prism focusing screen to allow me to do that manually as well. My percentage of keepers continues to increase, after these changes from how I started out with this K10D nearly 2 years ago.
Forum: Photographic Technique 02-06-2009, 02:50 PM  
Continuous auto-focus with K10D
Posted By Gooneybird
Replies: 14
Views: 3,687
Although I do very little sports photography, I do frequently shoot moving objects like birds and animals. My success using any form of AutoFocus with my K10D leaves a lot to be desired, less than 50% were focused where I intended. So recently I bought the Katz Eye split prism screen and have been doing everything by manual focus since. My success rate at shots focused where I wanted them has increased significantly, and I'm still learning. Actually, the hardest part is trying to predict where the subject will be, after I've focused at what I hope will be its location. Practice and practice seems to help.

Olin
Forum: Pentax Camera and Field Accessories 01-24-2009, 04:49 PM  
Katzeye Focus Screen...An Initial Review
Posted By Gooneybird
Replies: 51
Views: 18,788
I also got my new screen yesterday and installed it. (I must admit my first try I thought the ground glass side went to the camera's top and put the "handling tab" to the left, but the frame did not want to close. So, I switched the tab to the right and it closed easily.) This is on a K10D, and without the Optibrite feature.

After finishing, I began testing several of my collection of lenses. All of them worked beautifully. The red dot was in the center of all. There was no blacking out on any, including an ancient Quantaray 85-210mm manual and MOST significant no blacking out on my Swarovsky AT-80-HD spotting scope hooked to the Pentax 40mm pancake lens. I only tested this last one at 20X on the scope eyepiece, though. I'll test at higher eyepiece settings later.

So, to summarize, I think this new screen is great!!!

Olin
Forum: Pentax SLR Lens Discussion 01-24-2009, 04:25 PM  
Contrasty lens--always a good thing?
Posted By Gooneybird
Replies: 10
Views: 3,374
In essence, I agree with the above statement. But I don't claim to be an expert on which lenses are more or less contrasty than others, but the other day I had an interesting experience with just one lens. We had experienced a light snow fall in the before dawn hours, and I took several shots at about 8 am. They were very flat - not contrasty at all. Then two hours later, at about 10 am, I took some more shots and much to my surprise they were of high contrast. These were with the exact same lens, a Tamron 28 to 300 mm, all taken at roughly 50mm setting. So, my conclusion is, the light level has a great influence on contrast, irregardless of the choice of lenses. I'm sure this will stir up comments, i.e. those who might say "everyone knows this" and those who will argue with my findings. Oh well, that's life!
Forum: Pentax Camera and Field Accessories 01-24-2009, 03:42 PM  
Split screen focus...
Posted By Gooneybird
Replies: 169
Views: 37,118
Well, now I can respond with some proven facts. I received the Katz Eye split screen device and installed it in my K10D and proceeded to run tests with every lens in my collection. The Katz Eye that I ordered did NOT have the optibrite coating and it works without any blacking out on everything I own and tested. That INCLUDES the Swarovski Spotting AT-80HD at 20X. So, as far as I'm concerned, all the mathematical explanations are not verifyable, and I'm off to enjoy my new toy rather than argue.

Thanks but let's quit being too picky.

Olin
Forum: Pentax DSLR Discussion 01-23-2009, 03:56 PM  
My k20d with Katzeye review (With Pictures!)
Posted By Gooneybird
Replies: 142
Views: 71,939
To all who've posted on this thread, and especially Pentax-Poke, I'd like to say thanks. I ordered my Katz Eye split screen ten days ago, and it was delivered today. Within a couple of hours I had it installed and was testing with several of my lens collections - outside taking the type of shots that my K10D all too often misses the exact focus with in AF. From roughly 30 or so test shots, I will say this thing is great. It will probably get better as I return to the stage I was 40 plus years ago with my old Exakta VX-1000 with split screen focusing. And as others have posted, the installation was not difficult if you print out the Install pdf file and follow it.

Maybe more to follow in a day or so.

While I'm typing, could someone tell me how to include a photo or two in my messages? I see down below under Additional Options a box saying Attach Files, so maybe I need to click on the Manage Attachments. Is that the secret? I'll admit I just noticed it today, never found it before.

Again, thanks to all re the Katz Eye split screen.

Olin
Forum: Pentax DSLR Discussion 01-14-2009, 06:26 PM  
K20 with astronomical telescope
Posted By Gooneybird
Replies: 14
Views: 4,637
I know it doesn't actually become 60mm, but when the word "equivalent" is used, that refers to what field of view it obtains relative or equivalent to a 60mm lens if used on a 35mm camera. The word "equivalent" is common, but still confusing to lots of people, especially those new to the digital camera standards.

If a 35mm film camera with a 60mm lens were attached to the spotting scope at 20X it would be total focal length of 1200mm. The same thing applies, as far as the field of view, in this case - at least in my judgment. Do you disagree with this logic?
Forum: Pentax Camera and Field Accessories 01-14-2009, 04:34 PM  
Split screen focus...
Posted By Gooneybird
Replies: 169
Views: 37,118
Thanks for the very prompt reply. NOW it makes sense, I understand it.
Forum: Pentax Camera and Field Accessories 01-14-2009, 04:22 PM  
Split screen focus...
Posted By Gooneybird
Replies: 169
Views: 37,118
Thanks for this post and the next one, that you followed with. I'm puzzled by your above formula and how to apply it as stated. Can you restate it and identify the variables more precisely?

As for the scope's focal length - I don't really know. It is Swarovsky model AT-80-HD, which identifies the objective lens as 80 mm. As you show, the eyepiece is variable from 20X to 60X, but don't know how to apply this to the scope's actual focal length. Help me understand how, please.

Another point - in your followup post you chose a 28 mm lens, whereas the "pancake" lens is 40 mm. Show me what you get with that lens and above combo, please. And to the original question - will the center of the split screen be blacked out?

Thanks
Forum: Pentax DSLR Discussion 01-14-2009, 03:17 PM  
K20 with astronomical telescope
Posted By Gooneybird
Replies: 14
Views: 4,637
I have a similar arrangement as shown above by "Wildman", but mine is more for the purpose of "digiscoping". I have my K10D attached to my Swarovski Spotting Scope, the AT-80-HD with a 20X to 60X eyepiece. The camera has the Pentax 40mm pancake lens mounted onto the eyepiece, via an adapter that I and a friend made in his machine shop. This arrangement avoids the use of a T adapter, and allows considerably higher overall magnification. The 40 mm lens, which has an equivalent focal length of 60 mm, which when multiplied by the scope's 20X gives a minimum focal length of 1200 mm equiv. If the higher eyepiece settings are used, just multiply the setting by the 60 to get the equiv. focal length. However, this combo is sharpest at 30X and below.

If someone wants to see it, I'll be glad to post a picture of this arrangement, but first you will have to tell me how to add such a photo - I've never tried before in all my previous posts.

Olin
Forum: Pentax Camera and Field Accessories 01-14-2009, 10:37 AM  
Split screen focus...
Posted By Gooneybird
Replies: 169
Views: 37,118
Well, after reading all the posts in this topic plus some similar topics in different forum categories, I finally made up my mind and ordered the Katz Eye for my K10D. When I called them and talked with the very helpful lady that took my order, she answered many specific questions. She was quite familiar with the various questions - like which of my lenses I might get blacked out center, etc. But there was one in which she admitted to no knowledge nor experience on.

Therefore, I'm going to ask this group for their comments.

Specifically, among the several lenses I use, there is the 40 mm Pentax, often referred to as the "Pancake" lens, and she assured me the with the f 2.8 capability it would not black out. But then I explained that the main use I put that lens to is "Digiscoping", and I attach the camera to the eyepiece of my Swarovsky Spotting scope. My normal technique with this camera/scope combo is to set the camera to manual focus, then focus just slightly inward from Infinity, and then use the scope to focus on all subjects to shoot. This combo gives me the 35mm equivalent focal length of from 1200 mm to 3600 mm, if I so choose. (I rarely use the upper half however, since the scope's quality is reduced above the midrange of its eyepiece. The eyepiece is 20X to 60X, for info.)

So, my question to anyone who can help - will I end up looking at a blackened out center section in such an application?

I do have other lenses for low and mid range telephoto shooting, and there will be no "blackening" here I'm assured. But will I lose or reduce the success of using this modified camera with my scope?

Thanks,

Olin (Gooneybird)
Forum: Pentax SLR Lens Discussion 01-01-2009, 04:48 PM  
What whould be best 300mm lens for a $400?
Posted By Gooneybird
Replies: 11
Views: 5,788
I rarely see anyone mentioning the Tamron 28 - 300mm Macro f3.5 - 6.3 lens, but I've had one with my K10D for about a year, and find it VERY versatile and effective. It's fast focusing, has little or no CA, and is very sharp for most of my shots. The only place I still am not certain it's equally sharp is at the outer (300mm) end, but that may not be everyone's experience. I paid $389 for it new. Give it a look.

Olin
Forum: Photographic Technique 12-19-2008, 04:18 PM  
Shake Reduction... when does it come into play?
Posted By Gooneybird
Replies: 15
Views: 3,175
I don't mean to argue, but could you tell us what lens you were using there? Also is that a small portion of the full image (i.e. heavily cropped)?

I also use some rather long focal length lenses for taking such a shot. These include a 20 to 60X spotting scope coupled to a 40mm lens on the camera, so the camera sees it as a 40mm and would do the shake reduction based on that. So, in such a shot, I realize shake reduction is ineffective and probably SHOULD be turned off.

But in most of my normal shooting, with primes and zooms to 300mm, I have yet to find ANY instance where the shake reduction ON was detrimental to shots using a tripod. Just looking for other people's factual experience. Thanks.
Forum: Photographic Technique 12-18-2008, 04:27 PM  
Shake Reduction... when does it come into play?
Posted By Gooneybird
Replies: 15
Views: 3,175
Since the subject of leaving SR on, I really wonder what the majority believe regarding leaving it on EVEN when on a tripod. I've tried it both ways, On and Off while on a tripod, and frankly, cannot see any difference. Admittedly this defies the instruction in the K10D owner's manual, so what do others find/believe? Can it perhaps relate to the quality of the tripod? Or is there another answer?
Forum: Photographic Industry and Professionals 12-14-2008, 04:48 PM  
What kind of photos do you dislike?
Posted By Gooneybird
Replies: 230
Views: 28,409
Having already answered this subject much earlier, maybe this is unwelcome. But I have to agree with the above statements. Also I appreciate many forms of photography - IF IT'S DONE RIGHT, but as stated earlier - I hate those pieces of crap that people think they are doing ART! That's THEIR opinion, only.

Art is in the eye of the beholder, but photographs which appeal are the real measure of success. And what appeals to some may not appeal to others. That's the way life is.
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