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Forum: Troubleshooting and Beginner Help 05-11-2019, 07:42 AM  
Advice requeseted for concerns with my Acratech Ball Head QR Clamp
Posted By catfishjohn
Replies: 11
Views: 655
Great catch. I have several different make plates and just assumed all were the same dimension. Now I will check them all and any out of size will get cut to spec. Your post might prevent some dropped equipment, Thanks.
Forum: Troubleshooting and Beginner Help 05-01-2019, 03:32 PM  
Canít remove Battery Grip from K3-II.
Posted By catfishjohn
Replies: 7
Views: 465
I had the same problem with mine and used the screwdriver method to loosen. The thing seems to become tighter by itself somehow. After two episodes I now barely snug the thing and have had no more problems. I thought I had barely snugged the thing the second time it happened, but I was wrong.
Forum: Pentax Medium Format 04-26-2019, 06:32 AM  
FA 4/300 with M8 tripod mount - bizarre
Posted By catfishjohn
Replies: 10
Views: 821
Do you use any type of quick dethatch clamp on your tripod. If so just use a metric screw to attach a plate Arca Swiss, Manfrotto ect. Another fix would be to move over about 3/8 inch and drill and tap a 1/4-20 or 3/8 -16 hole to match your tripod.
Forum: Pentax Film SLR Discussion 04-18-2019, 08:32 AM  
Blue haze on landscape shots - help?
Posted By catfishjohn
Replies: 22
Views: 1,255
If you are seeing white haze it is likely dust or moisture in the air. Blue haze is just the air itself scattering light. It happens when you are looking a long distance so have a large thickness of clean air between you and your subject. It is just blue sky getting in the way.
Forum: Pentax K-1 04-15-2019, 04:38 PM  
DFA 150-450mm converter with K-1 Il
Posted By catfishjohn
Replies: 8
Views: 900
Read the review in the forum regarding the HD DA 1.4 with the DFA 150-450. It works very well except for the minor vignette. I am pleased with mine.
Forum: Pentax Camera and Field Accessories 04-07-2019, 10:39 AM  
Cheap kit to get started with Macro photography
Posted By catfishjohn
Replies: 37
Views: 1,494
Shopgoodwill has a Pentax 100mm f4 M series macro ending 4-8-19, a Fiji 55mm f1.8 macro with m42 mount ending 4-11-19 and a Pentax bellows with m42 mount ending 4-12-19. I cant predict what the final bid price will be but these might be worth a look. A low price option is the 50mm f4 macro Takumar with a m42 to K adapter, it is a really fine lens. You can review all these in the lens and accessory database.
Forum: Pentax SLR Lens Discussion 04-06-2019, 02:39 PM  
I think I have a problem
Posted By catfishjohn
Replies: 29
Views: 1,387
You can always sell blood for lens money. Thus far I have been unable to get my wife to chip in a pint or two. Perhaps your girlfriend will be more reasonable if you ask nice.
Forum: General Photography 04-01-2019, 09:30 AM  
My Series of Photography Articles (April Fool's Day)
Posted By catfishjohn
Replies: 29
Views: 1,181
I stand corrected. I thought "poverty porn" referred to the inevitable descent into poverty caused by G.A.S. My ribs are not showing just yet but I do have a few flies. I keep a list of G. which I have A.d recording value, price paid, and serial numbers. This is so that upon my death my wife can sell the stuff for pennies on the dollar. I like the flies because they help to keep the old woman away.
Forum: General Photography 03-31-2019, 10:13 PM  
My Series of Photography Articles (April Fool's Day)
Posted By catfishjohn
Replies: 29
Views: 1,181
"Poverty porn" another name for gear porn or lens porn. Want to guess how I know?
Forum: Pentax SLR Lens Discussion 03-31-2019, 01:36 PM  
11-18mm Can we expect a price drop?
Posted By catfishjohn
Replies: 15
Views: 921
I will put up a post if I buy one. Prices usually drop right after I buy.
Forum: Pentax Film SLR Discussion 03-24-2019, 11:25 AM  
[Pentax MX] Screw specifications for "bottom main gear screw"
Posted By catfishjohn
Replies: 3
Views: 438
A good source of old bodies cheap is shopgoodwill, the shipping is often higher than the camera price.
Forum: Pentax SLR Lens Discussion 03-22-2019, 10:52 PM  
About to pull the trigger on Sigma 17-50, but found much cheaper OS version...
Posted By catfishjohn
Replies: 8
Views: 763
I had the old version and it is a fine lens. My wife took it. You cant go wrong with that lens, new or old version.
Forum: Pentax SLR Lens Discussion 03-22-2019, 10:49 PM  
DA* 16-50 2.8 for bid at Goodwill
Posted By catfishjohn
Replies: 12
Views: 929
Always a crap shoot buying off goodwill. Never any guarantee and buyer beware. Sometimes win, sometimes lose. I am betting that lens is SDM failed and maybe other issues, but it might be fine. Buyer must decide how much to risk for the possible gain. Might be a parts lens. I always wonder what the story is on some of the things which show up on the site. Who donates diamond jewelry worth thousands? Some one often does.
Forum: Pentax SLR Lens Discussion 03-22-2019, 05:50 PM  
DA* 16-50 2.8 for bid at Goodwill
Posted By catfishjohn
Replies: 12
Views: 929
Had complete failure to focus. Looking thru the OVF I could find nothing in focus at any distance. Zooming in and out and watching thru the OVF I could find no point in focus. This made no sense to me as I felt some point should be in focus. On pressing the shutter button a hum could be heard for a moment. I didn't want to try taking the lens apart or spend more than its value on repair. This lens has the lock button, press and turn to put in operational position. From lock, pressing the release button and turning, a small click can be felt as the ring turns. I wondered if that might be a switch or contact being tripped so I held the button down and turned back and foruth from lock to operation about a dozen times. Was hoping to free up a stuck switch or rub clean a dirty contact. The focus moved a bit on pressing the shutter button so I repeated the process and the lens started working. I cant explain what happened. Perhaps as I guessed a dirty contact or stuck switch freed up. Anybody's guess what happened to the lens before I got it, or why it wound up at goodwill. As is said it came in like new condition, not a mark, scuff or a speck of dirt. There was slight damage to the corner of the box.
Forum: Pentax SLR Lens Discussion 03-22-2019, 07:22 AM  
DA* 16-50 2.8 for bid at Goodwill
Posted By catfishjohn
Replies: 12
Views: 929
Thanks Isoflex. I was watching it , now everyone is. There are some good buys on Shopgoodwill. I have learned that its also possible to get skinned. Its fun trying anyway. I got a like new 55-300 PLM in the box with owners manual and warranty card For $207.00. Focus and aperture didn't work. I found a simple and fast fix and have been wondering if anyone else has had the same problem with this lens.
Forum: Pentax SLR Lens Discussion 03-19-2019, 10:22 AM  
Recommendation for affordable 750mm+ birding lens please, thanks
Posted By catfishjohn
Replies: 43
Views: 1,630
Avoid the 6x7 300mm F4, I tried one and now it gathers dust.
Forum: Pentax SLR Lens Discussion 03-19-2019, 10:18 AM  
Recommendation for affordable 750mm+ birding lens please, thanks
Posted By catfishjohn
Replies: 43
Views: 1,630
Adam is spot on about the 500mm f4.5. Can be found in M42 or K mount. Usually cheaper in M42, just add an adapter. It works great with a crop sensor camera and the HD DA 1.4. You will find that at those long focal lengths that any shake is hugely magnified. Also any heat makes lots of distortion at any distance. Dust and haze can be a real bummer as well. If you refine your skill at longer distance then birding distance will come somewhat easy.
Forum: Pentax SLR Lens Discussion 03-19-2019, 09:57 AM  
Recommendation for affordable 750mm+ birding lens please, thanks
Posted By catfishjohn
Replies: 43
Views: 1,630
I came up with an idea which worked out pretty well. Bought a 6x7 400mm f 4 and added a 6x7 to K adapter. Also watched until I found the 6x7 teleconverter in 2x and one in 1.4. This makes several focal length possible with surprisingly good IQ. The lens and adapters can be found fairly cheap if you watch the bidding. I got the lens for about $330.00, the adapter for about $60.00 and the teleconverters for $30.00 the 2x, and $70.00 the 1.4x. Around $500.00 for a set up which can go from 400mm to 1100mm. The IQ is good but it takes a heavy tripod, carefull attention to focus and using the shutter timer at the longer end. Read the review in the lens database and also check out the teleconverter reviews. Also look for the newer model teleconverters, they are grey not black. Of course everything is fully manual. And heavy! An interesting effect with this set up is the gain in light reducing the 6x7 to 35mm. The 6x7 is twice the size of 35mm which equates to 4 times the area. When you put the adapter on the light which would have fallen on the 6x7 size is concentrated on an area one fourth that size. This gives a gain of a little more than one stop. I checked this by setting up on a clear sunny day and comparing my DFA 150-450 (set on 400 f4) to the 6x7 lens. The K1 always raised the shutter speed to get the correct exposure using the 6x7 lens. This is not an apples to apples comparison as the glass and coatings in the DFA give better light transmission. However the shutter speed always went up using the old 6x7 400 f4 SMC compared to the DFA. I also compared the area covered in the photos. At 100 yards both lens covered the same area, DFA set at 400mm.
Forum: Pentax SLR Lens Discussion 03-17-2019, 12:07 PM  
WD40 safe for stiff focus?
Posted By catfishjohn
Replies: 13
Views: 2,110
NO NO NO! WD40 is a penetrating oil, made to creep and spread. Also emits vapor. All this WILL move to places in your lens where harm will be done. Grease for lenses is specialty stuff which is stable, long lasting and no vapor. When it becomes stiff over time (long time) it should be removed completely and replaced with the correct grease. Wheel bearing grease is not it, WD 40 sure isn't.
Forum: Pentax SLR Lens Discussion 03-17-2019, 07:23 AM  
My first Ebay win, yay!
Posted By catfishjohn
Replies: 11
Views: 1,131
That is a great lens, sharp and wonderful Tak color. Was one of my favorites until my wife got hold of it. Now its one of her favorites.
Forum: Pentax SLR Lens Discussion 03-16-2019, 09:38 AM  
Suggest a zoom lens.....
Posted By catfishjohn
Replies: 22
Views: 1,039
Read the review in the lens database on the A 35-105. It is a fine lens and can be had for around $100.00 +/-.
Forum: Pentax SLR Lens Discussion 03-08-2019, 07:03 PM  
Need help deciding between two 50mms!
Posted By catfishjohn
Replies: 19
Views: 1,009
That is in fact an f4, notice the : between the 1 and 4. A !:4 is f4. That is a fine old tak, great color and sharp. I put an m42 to K adapter on mine and gave to my wife. She has some really nice macro bee and butterfly pictures from her flowerbeds. Using a K5iis. The one in your photo does have an issue with something on the rear lens. I would keep looking, that lens is not uncommon and a good one should not be hard to find. Check out the lens data base if you havnt already done so. Its a wonderfull source of lens information. For this lens scroll down to M42 standard and look for ''50 mm f4 macro''. You will find all you need to know.
Forum: Pentax DSLR Discussion 03-03-2019, 10:52 AM  
New Pentax Cameras Make Us All Richer!
Posted By catfishjohn
Replies: 59
Views: 3,280
I have been seeing some low prices for lenses on Adorama and B&H and have wondered why. I bought the silver 20-40 limited at Adorama for $450.00, the sale lasted only a day or two. Then the price jumped back up. The black version stayed at regular price, seems odd. Now I see Pentax USA has the 55-300 PLM for $400.00, $50.00 under dealer price. Whats up with Pentax under pricing their dealers?
Forum: Pentax Camera and Field Accessories 02-23-2019, 02:33 PM  
Carbon Fiber Tripods and shutter shock
Posted By catfishjohn
Replies: 19
Views: 1,093
If your going to be setting up near water carry an empty plastic jug or bag. Fill it on site for a weight and dump it on leaving. The fluid in the container also helps dampen vibration. I usually carry a drinking water bottle and use it, just don't refill from an unknown water source. A rubber bunji cord can be used to attach a weight found on site. Just adjust the bunji to the length you what to allow your weight to touch the ground and for tension. If all you find is a fifty pound rock that's OK. Just put it on the end of the bunji under your tripod and stretch the bunji to the tension you want A rock, a bag of dirt or sand, piece of wood. All make a weight you do not have to carry in or out.
Forum: General Photography 02-22-2019, 02:32 PM  
LBA, GAS, do you have it and does it make sense?
Posted By catfishjohn
Replies: 116
Views: 4,120
Trust me, your not even 30% crazy. Maybe toxic overexposure is a cure. Buy more.
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