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Forum: Non-Pentax Cameras: Canon, Nikon, etc. 07-14-2020, 06:23 PM  
Micro Four Thirds Club
Posted By Dean Bradshaw
Replies: 3,280
Views: 335,420
Thanks Damien 😁
Forum: Non-Pentax Cameras: Canon, Nikon, etc. 07-13-2020, 04:59 AM  
Micro Four Thirds Club
Posted By Dean Bradshaw
Replies: 3,280
Views: 335,420
I've just returned from a short family trip to Dunsborough, Western Australia (about a 3 hour drive south of Perth) and on Friday night we had nice clear skies and I tried my hand at some astrophotography.

I'm regularly stunned by the quality of astro images the skilled members of the forum are able to obtain...I was just pleased to get something I was happy with :)

Panasonic G85 with Lumix 12-35mm f/2.8 shot at 14mm and f/2.8 for 20 seconds at 1600 ISO and processed in Lightroom.

Cheers
Forum: Non-Pentax Cameras: Canon, Nikon, etc. 03-12-2019, 02:24 PM  
Micro Four Thirds Club
Posted By Dean Bradshaw
Replies: 3,280
Views: 335,420
Thanks for the follow up, I’ll be interested to see what you find.

Cheers

---------- Post added 03-13-19 at 05:41 AM ----------



Thanks for adding your questions...it’ll be good if we can get this straightened out :)

I don’t use manual flash, but based on my issue experienced I would assume the standard view in the viewfinder would be dark, based on your manual settings and having exposure preview mode on, then when zooming to focus the magnified image will brighten to a calculated ‘correct exposure’.

The good news for you is that you can disable exposure preview mode and the camera will display the calculated correct exposure irrespective of your manual settings, while displaying an over/under exposure bar/indicator/warning on the screen.

As to the rear LCD and EVF question, my experience on mirrorless is that they are treated identically by the camera, what you see in one you’ll see in the other. So, magnified view dipsplays in both, the exposure preview issue discussed occurs in both, you can use both to review photos, etc.

The half-press does bump you back from magnified view to standard view on the G85, so likely it will on most/all bodies. I haven’t looked for an option to disable this, but I haven’t noticed one when trawling through menus either.

I hope that helps some? Please let me know if I have explained anything poorly or can clarify?

Cheers
Forum: Non-Pentax Cameras: Canon, Nikon, etc. 03-12-2019, 01:58 AM  
Micro Four Thirds Club
Posted By Dean Bradshaw
Replies: 3,280
Views: 335,420
Hmmm...thanks @WPRESTO , but no joy with either suggested solution. I first tried adjusting the monitor luminance (from a choice of *1, *2, *3 and *A) and though it does (of course) adjust the overall luminance, it doesn't maintain that luminance level when 'punching in' to focus...the camera display adjusts back to an automatic exposure level, brightening as if the camera were in 'iAuto' or similar, rather than fixed ISO and M mode.

I also tested this behaviour using a non-mirror lens...in this case a Pentax FA 50mm f/2.8 Macro :) While the field of view was wider, and the image produced noticeably sharper than the mirror lens ;) the display exposure behaved the same as when the mirror lens was mounted. No matter how underexposed the image was when the standard display is shown, once the zoom in focus aid is engaged the image reverts to an auto exposure level.

To confirm, the captured image is of course as per the camera settings...it is only the 'exposure' of the displayed image when zooming in to focus.

Still not sure if this is just me or if others, either with G85 or other Panasonic bodies, experience this?

Cheers
Forum: Non-Pentax Cameras: Canon, Nikon, etc. 03-11-2019, 11:21 PM  
Micro Four Thirds Club
Posted By Dean Bradshaw
Replies: 3,280
Views: 335,420
Thanks for that :) ...some good thinking and tips to try. I’ll have a go and feed back. I’ll also have a look with other all manual lenses to see if there is a difference in their operation in comparison to the mirror lens.

Cheers
Forum: Non-Pentax Cameras: Canon, Nikon, etc. 03-11-2019, 06:25 AM  
Micro Four Thirds Club
Posted By Dean Bradshaw
Replies: 3,280
Views: 335,420
Hi everyone,

I'm hoping one of you knowledgeable folk here may be able to help :)

The question: Is it possible to maintain the 'Live View' exposure on the monitor when zoomed in to assist in focus?

I have a 500mm mirror lens attached to the G85, playing with some moon shots. I'd like to be able to use the zoom in to assist with accurate focus. However, even though I have the Monitor Live View mode enabled and it operates correctly when not zoomed, once I zoom in the zoomed area seems to revert to a non-Live View exposure level, so I get a magnified view of a very over exposed moon :)

Am I missing something? Is this correct operation that every experiences, or is there a trick I'm missing? Did I even explain that so it made sense? :)

Please let me know if anyone has any input...and my apologies if this is not really an appropriate question for this thread.

Cheers, Dean.
Forum: General Photography 12-01-2018, 03:06 PM  
Interesting story of camera repairer and his notes...
Posted By Dean Bradshaw
Replies: 12
Views: 1,242
Thanks Mike for a very helpful and detailed reply :)

All of that info makes perfect sense, and the practicalities of use of a niche lens like this is certainly a big consideration.

I’m sure I dont need an 1100mm...and it’s certainly questionable how frequently I’d use it, but it’s hard to not want something quite so ridiculous as this :)

Cheers
Dean
Forum: General Photography 11-29-2018, 02:20 PM  
Interesting story of camera repairer and his notes...
Posted By Dean Bradshaw
Replies: 12
Views: 1,242
My pleasure :)

---------- Post added 11-30-18 at 05:22 AM ----------



Yep, it certainly sounds like he knows his way around some gear! And great forethought and dedication to keep such good records.

Cheers

---------- Post added 11-30-18 at 05:25 AM ----------



Nice reference :)

I admire people who have the dedication and patience for this kind of work. I recently had my watch repaired and the fella here in Perth is a true watchmaker and technician...it was amazing seeing his casual ease moving around the tiny innards of a watch while cheerily chatting with me.

Cheers

---------- Post added 11-30-18 at 05:28 AM ----------



What you wouldn’t give, right? :)

Side note Big Mack...have you had much to do with the ridiculous MTO 1000A 1100mm lens? One has popped up for sale recently and it’s pretty tempting just for its novelty...just wondering if it’s as much of a pain/difficult to use/deal with as I imagine it is?

Cheers

---------- Post added 11-30-18 at 05:32 AM ----------



Yes, good (frustrating at times) fun :) I’ve done some work on Takumars and they (to me) seem very well manufactured and designed with most everything ending up back where it should. I’ve also made the mistake of opening some other branded lenses, getting a few layers in and thinking ‘I’ve made a huge mistake’ :lol:

Cheers

---------- Post added 11-30-18 at 05:33 AM ----------



Ah, well spotted...I was reading the article on my phone at lunch break and didn’t focus (*groan*) on the images too much/enough :)

Cheers
Forum: General Photography 11-20-2018, 03:35 PM  
Interesting story of camera repairer and his notes...
Posted By Dean Bradshaw
Replies: 12
Views: 1,242
Yeah, the article seems to place the emphasis on the ‘clockwork’ nature of the cameras and his focus on camera repair, but you’d have to assume he would have worked on lenses too.

I wonder how many Soviet lenses ended up in Dubbo? :)

Cheers

Dean
Forum: General Photography 11-20-2018, 03:27 PM  
Interesting story of camera repairer and his notes...
Posted By Dean Bradshaw
Replies: 12
Views: 1,242
I just read this quite interesting story on the Australian ABC News site...

“Restoring and recording the cameras of yesteryear

Tucked away in the garage of his Dubbo home Ben Vang finds new life in the 'organs' of 'dead' vintage cameras.”

Vintage camera enthusiast hopes to share vast archive of notes and illustrations - ABC News (Australian Broadcasting Corporation)

One of the interesting points is that he has made notes on every camera model he has repaired, over 3000 models apparently, and is hoping to find someone to purchase/take on these notes.

I hope people like this are able to find ‘apprentices’ or otherwise pass on their knowledge...

Cheers

Dean

Apologies if there is already a post on this article. I did a quick search and couldn’t see one.
Forum: General Talk 09-23-2018, 06:38 AM  
Your latest acquisition
Posted By Dean Bradshaw
Replies: 20,807
Views: 1,486,067
Hungarian? Would that be about one of the only ones? Related to Finnish (Sami?), I believe...but not an amalgam as such? To be fair, maybe ‘modern’ Hungarian uses a much broader range of ‘borrowed’ words...I have no idea... :)
Forum: General Talk 08-28-2018, 02:50 PM  
What music are you currently listening to?
Posted By Dean Bradshaw
Replies: 6,732
Views: 520,164
Just scrolling through the forum, saw this and it caught my eye...

Hint: look at the photo title under the ‘What music are you currently listening to?’ entry :)

I’m wasn’t, but I might now :)

Cheers

Dean
Forum: Post Your Photos! 08-06-2018, 10:36 PM  
Macro Snail on a tarp(aulin)
Posted By Dean Bradshaw
Replies: 14
Views: 874
Thanks sealonsf :) Yeah, I like it too. I really need to break out the FA 50mm macro more often...it is fun :)

Cheers
Forum: Post Your Photos! 08-05-2018, 02:37 PM  
Macro Snail on a tarp(aulin)
Posted By Dean Bradshaw
Replies: 14
Views: 874
Thanks FozzFoster :)
Forum: Post Your Photos! 08-04-2018, 02:37 PM  
Nature Black Necked Crane Perth Zoo
Posted By Dean Bradshaw
Replies: 6
Views: 775
Thanks Photogoof :)
Forum: Post Your Photos! 07-22-2018, 01:05 PM  
Landscape My Neighborhood
Posted By Dean Bradshaw
Replies: 5
Views: 613
A nice neighborhood :)
Forum: Pentax Forums Giveaways 06-30-2018, 04:00 AM  
K-1 Raffle: Entry thread 1, 11am UTC, June 30, 2018
Posted By Dean Bradshaw
Replies: 64
Views: 14,353
please
Forum: Post Your Photos! 06-28-2018, 04:04 PM  
Nature Python @ Perth Zoo
Posted By Dean Bradshaw
Replies: 6
Views: 961
Thanks FozzFoster :)
Forum: Post Your Photos! 06-05-2018, 03:12 PM  
Macro Snail on a tarp(aulin)
Posted By Dean Bradshaw
Replies: 14
Views: 874
Thanks! :)
Forum: General Talk 05-29-2018, 10:27 PM  
The shocking truth about our Australian members. It's all a sham!!
Posted By Dean Bradshaw
Replies: 416
Views: 18,142
Or a long day, from where I’m standing ;)

Cheers
Forum: Pentax SLR Lens Discussion 04-30-2018, 06:02 AM  
Unusual and fast mirror lens - Yashica Reflex Yashinon-DX f/5 500mm
Posted By Dean Bradshaw
Replies: 12
Views: 2,099
Thanks Steve,

I'm a bit time poor, so might be my usual lag to get anything done...like posting some photos from the lens.
Your'e not wrong about the heavy! I've had the lens sitting around, so I've occasionally thrown it on the camera for a play...hand holdable? Not really :) I've been mounting a Panasonic G85 on the lens...100% it's screwing the camera to the lens, not the other way around.

Cheers

---------- Post added 04-30-18 at 09:04 PM ----------



I think you'd have to be a better man than man to spot a bird with this...I have it on a micro four thirds body, and at 1000mm equivalent field of view I was struggling to find the moon! :)

Cheers

---------- Post added 04-30-18 at 09:08 PM ----------



Thanks for the tips Catfishjohn...I think I'm likely to take your advice and if need be get this one done by a professional. I've given the exterior and front glass a first pass clean...can't reach the rear glass, it's buried so deep ;)

I'm wondering if it would best taken to a telescope/astro repairer, as opposed to a camera shop. I'm guessing the astro guys would have much more day to day experience with this kind of construction?

You're not wrong about the thin depth of field...I find the donut bokeh pretty funky actually. It has character (but it may not be good character).

Cheers

---------- Post added 04-30-18 at 09:11 PM ----------



Cheers Mike...yeah, as a bit of a novelty, with some random rarity thrown in I was pretty happy with it. As above, if it needs a proper clean I'll pass it onto the pros...I know my limits as a camera/lens tech :)

Cheers

---------- Post added 04-30-18 at 09:14 PM ----------



Yes, I'll try to be a good boy and get that done ASAP. I'll clean up the exterior a little further, try and take some passable product shots, try and grab a sample photo or two and get it listed. If I hadn't found that Yashica lens manual I would have had no idea, really was bugger all to find on line (or at least that my rudimentary searching could dig up).

Cheers

---------- Post added 04-30-18 at 09:25 PM ----------



Thanks for your post and sharing those images. There really are some amazing lenses out there, and a huge variety of ways people have engineered solutions to various problems.

I think we take so much for granted in the digital age, with electro-magical solutions to so many problems or digital ways of dealing with a given scenario...often all in the one device. I have a Panasonic G85 and it's combination of tricks (post focus, 4K photo modes, focus bracketing, etc, etc) are pretty remarkable. In the analogue days to try and address any one of those modes would likely have required a very specifically engineered device, which would perhaps be capable of that one thing, and no more.

I always enjoy seeing these new and interesting lens (or cameras, or whatevers) :)

Cheers

Dean
Forum: Pentax SLR Lens Discussion 04-27-2018, 06:51 AM  
Unusual and fast mirror lens - Yashica Reflex Yashinon-DX f/5 500mm
Posted By Dean Bradshaw
Replies: 12
Views: 2,099
Thanks Uncle :)

Yeah, one that was worth the dollars for the novelty value alone.

---------- Post added 04-27-18 at 09:57 PM ----------



Yeah, it's hefty alright...rough measure has the front thread at about 120mm to 123mm? About 240mm (9.5 inches) long...not sure what that is in SMUs :)

I'll try to take a few more pictures of and with the lens in the next few days, and I'll also try to get it into the lens database too...best of intentions...

Cheers

---------- Post added 04-27-18 at 10:01 PM ----------



It is in pretty decent condition, not near mint, but very nice :) It's clearly been used (which is good), with some wear on the front threads and some visible indentations in several spots from the locking screw on the rotating mount, when viewed down the hole for the missing screw.

I'm looking forward to having a play...if lugging this beast around can be called play ;)

Cheers
Forum: General Talk 04-27-2018, 06:05 AM  
Your latest acquisition
Posted By Dean Bradshaw
Replies: 20,807
Views: 1,486,067
Just received a Yashica Reflex Yashinon-DX f/5 500mm, with serial number 5050008...I'm guessing they didn't make too many of these, but do I really have number 8? :)

I've made a (rambling) thread with a couple of rough and ready images (of the lens, not with...yet) in the lens discussion forum, as this seems to be a fairly unknown lens...I certainly couldn't find too much on it...

Cheers
Dean
Forum: Pentax SLR Lens Discussion 04-27-2018, 05:55 AM  
Unusual and fast mirror lens - Yashica Reflex Yashinon-DX f/5 500mm
Posted By Dean Bradshaw
Replies: 12
Views: 2,099
Hiya everybody,

I've just taken delivery of what seems to be a fairly unusual/rare/unknown/unique lens...a Yashica Reflex Yashinon-DX f/5 500mm.

The lens was not well described on the auction site, with no clear statement of what it actually is...an f/5 mirror lens?!? I've not come across such a 'fast' mirror lens before, though I now see Nikon made one similar. Not that I spend too much time looking at or for mirror lenses, but this one caught my eye. The image on the auction site was a bit indistinct, and the lens markings (as below) have some slight wear, so I really wasn't sure I was seeing it correctly...I had initially assumed this was just another f/8 500mm lens.

I looked again and more closely at the images, did a bit of Googling..."Hmmm...not finding too much about a Yashica f/5 mirror lens"...back to the listing..."Yep, that's gotta be a 5...f/5...eh, let's make an offer and see" :) And sure enough it is.

While waiting for the delivery I tracked down a Yashica lens manual on Welcome to Orphancameras, camera manuals (I should have looked there first really) and sure enough, there it is...

Minimum Focus Distance: 10 metres (35 feet)
Lens Composition: 6 elements in 5 groups
Angle of view: 5 degrees (on 35mm)
Mount: Yashica screw-thread mount (M42)
Weight: 2100 grams (4.6lbs...I thought mirror lenses were meant to be light weight!!!)

It has a fixed tripod foot and drop in rear filters, most of which came in the delivery (ND 4x, Yellow, Orange, UV, etc.).

The construction has a focus ring on the narrow section behind the main lens barrel, which combined with the weight really makes this tripod only :)

The screw mount section/bezel behind the focus ring rotates, I assume to allow orientation change when tripod mounted, but a locking screw is missing...I'll haver to track down a make shift replacement. The mount is secure, just freely rotating.

Also a GIANT screw in lens hood.

The overall condition is pretty good...a little dirty, but the glass seems clear, just dirty. I haven't had much experience with cleaning mirror lenses, so we'll see how we go with this one.

A few pictures attached...sorry for the quick nature of these, just taken this evening on the kitchen table to get the post underway. Keen eyed observers may also note the beer bottle cap used to prop the lens for the photo (may explain the rambling post).

My final point to note...serial number is 5050008. I doubt they made 50000+ of this lens, so maybe I have lens number 8 off the production line?

Anyway, thanks for looking...any comments welcome...just thought it was interesting enough to warrant a post :)

Cheers
Dean
Forum: General Photography 03-17-2018, 03:41 AM  
Long Time No See + 20 Photos :)
Posted By Dean Bradshaw
Replies: 49
Views: 5,959
Thanks for your post, sharing your pictures and sharing your story.

I can't begin to imagine what you've seen in Syria. Unbelievable that there are still smiles anywhere in that fractured country...the images you've shared are wonderful photographs that carry some heavy emotional weight.

Congratulations on your impending arrival and all the best.

Cheers
Dean
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