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Forum: Pentax Medium Format 04-02-2018, 09:57 AM  
Medium Format starter kit under $1k?
Posted By asahijock
Replies: 62
Views: 1,811
The key to whether you need bigger than 645 negs is the question: What is likely to be the biggest print you might want?. Tell us that and we can say if 645 will meet that requirement.

asahijock
Forum: Pentax Medium Format 02-21-2018, 02:21 PM  
Is it worth upgrading from a 200mm f/4 manual lens to a 150mm f/3.5 manual lens
Posted By asahijock
Replies: 12
Views: 868
Thanks for posting, bobbotron. These shots would suit my requirements. On the point of hard to focus which was made, doesn't the green hexagonal light to show focus which you get from the A lenses take away most of not all difficulties in focusing. I only have the 75mm and 45mm lenses but the green light makes it relatively easy to obtain focus, although I can imagine that you might need a more delicate touch to get the light on with a 150/200mm lens - less leeway while moving the focus.

PS the top animal is welcome at my house anytime. The lower one I am less sure of :D

asahijock
Forum: Pentax Medium Format 02-17-2018, 07:42 AM  
Is it worth upgrading from a 200mm f/4 manual lens to a 150mm f/3.5 manual lens
Posted By asahijock
Replies: 12
Views: 868
I thought I had seen somewhere( maybe here?) that the conversion factor from MF(645) lenses to lenses for 35mm cameras was 0.62 which makes the 200 the equivalent of 124 and the 150 equivalent to 93. Have I got the wrong factor?

A comparison would be very useful for those of us such as I who have wondered about the 200 v 150, Thanks

asahijock
Forum: Pentax Medium Format 02-05-2018, 01:39 PM  
Focusing issue with Pentax 645N
Posted By asahijock
Replies: 2
Views: 445
In my experience as long as the lens is an "A" lens designed for the P645 or P645N then the green focusing hexagonal will light up when you have the lens in focus and yes there is an beep as well but it is hardly necessary as the green "dot" shows up well in the viewfinder The correct focus does not rely on you using the correct dioptre in the eyepiece. That for the benefit of your eyesight and not the camera's eyesight

asahijock
Forum: Pentax Medium Format 01-29-2018, 01:30 PM  
Pentax 645N repair
Posted By asahijock
Replies: 22
Views: 1,220
I cannot guarantee that this will work because (A) the repair company is in the U.K. and may not be willing to accept work from beyond the U.K. and (B) may not be prepared to repair medium format Pentax but "Google" Newton and Ellis. They are camera repairers from Liverpool, England.

They are highly regarded in the U.K and if you are willing to ship the camera to them and pay for postage back to Sweden then I do not think that this will be a problem but I have no idea if their expertise extends to the Pentax 645N. Worth contacting them to find out.

asahijock
Forum: Pentax Medium Format 01-10-2018, 01:35 PM  
645 teleconverter
Posted By asahijock
Replies: 18
Views: 1,029
Thanks Alex645. I should have noted that you were not the OP to whom I had addressed my questions and secondly I had inferred wrongly that when you said you'd probably use XP2+ at 1600 this was a suggestion rather than something you had done personally.

asahijock
Forum: Pentax Medium Format 01-08-2018, 02:04 PM  
645 teleconverter
Posted By asahijock
Replies: 18
Views: 1,029
Thanks Alex. Good news that you did it at 800, thus Portra a superb colour film is available even at 2x converter. I had heard( maybe on this site) that the 1.4 was the better of the two converters in terms of resolution etc but your shots with 2x look pretty good to me.

I nearly added in my post that I have the luxury of Ilford D3200 wheregrain is hardly a problem with 645 format unless the enlargement is way beyond what I'd ever need to do. However you are the second person to recommend XP2+ at 1600.

Do you develop the XP2+ yourself and if so or if not what do you or the lab do about development time? I had heard that at a push of two stops such as 1600 the negatives may be a little thin at the standard 3 mins 15 secs. Once upon a time Ilford itself used to give the exposure latitude as up to 1600 but having just looked at the website it seems to suggest up to 800 with no process adjustment. I have done a bit of research but cannot find anything on pushing XP2.

asahijock
Forum: Pentax Medium Format 01-07-2018, 01:43 PM  
645 teleconverter
Posted By asahijock
Replies: 18
Views: 1,029
Nice shots. Can you remember the ISO you used? I have a P645N so a film user. The top ISO in colour is quite limited compared to a digital 645 hence my worry that your ISO might well be higher than I can achieve with film, using even a 1.4 let alone a 2x.

Thanks

asahijock
Forum: Pentax Medium Format 10-10-2017, 02:43 PM  
HELP Pentax 645 winding issue
Posted By asahijock
Replies: 11
Views: 828
I have a P645N but as far as I know the insert and winding mechanism is the same. I, like Alex645, have never experienced a problem. Do you have a second insert you could use to check if the problem re- occurs. It might help rule out if there is anything about the insert that is causing the problem. If it has to be coaxed through it suggests that as the film winds on to the top spool something add a lot of resistance which the batteries cannot overcome. What makes you sure the batteries are fine? I'd try a new set of good quality batteries such as Duracell. Avoid unnamed Chinese cheap batteries. If these do not cure the problem, even initially, then it suggests that something in the insert is not mechanically sound. If it works for the first few films but the problem then manifests itself again then it points to the insert again.

With brand new batteries you can at least eliminate batteries as the problem

asahijock
Forum: Pentax Medium Format 10-09-2017, 09:32 AM  
P645Nii - What is the mechanism determining recognition of the start of the film
Posted By asahijock
Replies: 7
Views: 718
Thanks. Yes it was as demonstrated by other replies


asahijock
Forum: Pentax Medium Format 10-08-2017, 12:56 PM  
K-1 or 645n
Posted By asahijock
Replies: 20
Views: 1,320
Thanks. The MLU of the Nii would seem to be a marginal difference to many but if it makes an observable difference in the 200mm+ range and in slower shutter speeds such as > 1/125th then I understand.

asahijock
Forum: Pentax Medium Format 10-07-2017, 11:21 AM  
P645Nii - What is the mechanism determining recognition of the start of the film
Posted By asahijock
Replies: 7
Views: 718
Thanks. So if the backing paper is damaged and even a small amount has to be cut off this will lose you the corresponding amount of film i.e. the first frame starts later and last frame finishes later. Not necessarily a problem if the start( in terms of frames available) is only a few cms later but if the backing paper had to be cut much further it could lose you a frame or two.

Without wishing to appear to be challenging your conclusion, is this supposition on your part or definite knowledge of how it works in a P645N?

asahijock
Forum: Pentax Medium Format 10-07-2017, 09:59 AM  
P645Nii - What is the mechanism determining recognition of the start of the film
Posted By asahijock
Replies: 7
Views: 718
I possess a P645N not the Nii but I think the above mechanism is the same in both cameras. A thread on another forum involving a P645Nii has prompted me to ask this question. Is it simply a change in thickness where the film starts so if backing paper only were to be rewound onto an empty spool the camera would simply wind the roll on to the end looking for the change in thickness?

I take it for instance that if the start of the paper leader were to be damaged and had to be cut off and a new leader cut to shape the roll would still be perfectly OK? If there were to be damage to the backing paper horizontally along the backing paper such that a section was torn horizontally rather than vertically, this would make no difference other than the obvious one that if it extended a long way the start of the film might be exposed to light but provided the paper was OK to be loaded onto the take-up spool such that it ran through this would not affect the camera recognising where frame 1 was?

Thanks


asahijock
Forum: Pentax Medium Format 10-07-2017, 09:41 AM  
K-1 or 645n
Posted By asahijock
Replies: 20
Views: 1,320
It sounds from what you have said that had it been the 645Nii v the K1 this might have been the "game changer" in terms of which to buy. Can you or anyone else say what the more current 645Nii has compared to the P645N that makes it the "game changer" in terms of choosing analogue over digital.

Thanks

asahijock
Forum: Pentax Medium Format 06-17-2017, 01:11 PM  
Pentax 645nii Data imprint Issues
Posted By asahijock
Replies: 4
Views: 491
I have the P645n not the nii so the instructions as to how you turn on and off the Data imprinting may differ. In my case it says you pull back the Depth of Field preview lever on the camera's side, hold it there while using the up down buttons on the top of the camera which are close to the LCD screen to turn the D on or off. However if the D is showing as you say it is then Data Imprinting is on. With certain lenses you lose some of the data so if it is an A lens and not FA you lose the focal length of the lens and a helicoid extension tub loses you both focal length and aperture.

I am clutching at straws here. It may be possible to have an adaptor on to accommodate a non Pentax lens or maybe even a non 645 lens and you may lose everything but if you have either an A or FA lens on and I appreciate you mention FA lenses and the D is showing then it looks as if you have a fault which will require professional help.

You might want to contact the seller and check with that person.

Best of luck in resolving the issue

asahijock
Forum: Pentax Medium Format 06-16-2017, 01:16 PM  
Pentax 645nii Data imprint Issues
Posted By asahijock
Replies: 4
Views: 491
I am not trying to insult your intelligence but I take it you are aware the data is outside the neg area. The data is very small and quite easily missed with the naked eye - or at least with my naked eye. However if you have looked for the data with a magnifying glass or loupe and found nothing then I am at a loss to explain it.If everything else works on the camera then it seems strange that whatever controls the data imprinting is not working

asahijock
Forum: Pentax Medium Format 05-19-2017, 09:18 AM  
Pentax 645D/Z eyecup on film Pentax 645 question
Posted By asahijock
Replies: 5
Views: 924
One possible alternative to either Nikon eyecup is the 35mm Pentax eyecup. This cup is not round like the Nikons but is more like the shape of the eyeball i.e. it is more oval-shaped but with a straight cut on one side which goes towards the bridge of your nose and the oval shape goes to the outside of your eyeball. It can be turned in either direction for the left or right eye to shield the eye from light. If you buy one it will probably have the frame which fits over view finder and the retaining ring which screws into frame thus holding the rubber cup. Simply unscrew the retaining ring which frees the cup and then stretch it over the P645 view finder having first unscrewed the large cup. There is no retaining ring so it relies on being a tight fit but it is tight. I know because I tried it last night

The advantage over the Nikon round cup is that it does not interfere with attachment or detachment of the film insert.

ashijock
Forum: Pentax Medium Format 05-18-2017, 12:39 PM  
Pentax 645D/Z eyecup on film Pentax 645 question
Posted By asahijock
Replies: 5
Views: 924
I think the point the OP was making is that the large Pentax eyecup does not prevent stray light getting in compared to the Nikon eyecup which is cup shaped In my opinion the word eyecup is a misnomer in the Pentax case as it is flat and not a cup, hence the problem of stray light. I have exactly the same issue with the Pentax large eyecup as the OP

ashijock

---------- Post added 05-18-17 at 09:02 PM ----------

lightproof, you may want to look at my earlier thread on this. It is called P645N Large Eyecup Problem. In that GR Hazelton found a solution with a DK-2 which is for Nikon F3 and others Nikons. The DK-2 may be identical to the DK-19 but it is a tight fit and if there had been a problem attaching the insert with it as you had then I would have thought that GR Hazelton would have mentioned it and he didn't. I haven't tried the DK-2 solution yet I have been lucky enough not to find myself in the same light direction problem since the day that prompted my thread.

Best of luck

asahijock
Forum: Pentax Medium Format 03-23-2017, 02:55 PM  
Pentax 645 NII Not displaying E or Indicating what Frame Number I am on.
Posted By asahijock
Replies: 1
Views: 538
I only have the P645N not the Nii but I suspect the film loading and frame number system is the same. Does everything else that should be on the screen show such as film speed, aperture etc? I have no idea whether this is the first P645 you have had so forgive me if I seem to be insulting your intelligence

When you load the film into the insert it goes on the bottom spindle and is spooled to the top spindle with the backing paper at the back so that the film is facing the lens. The backing paper needs to be wound forward from the top spindle so that the start line on the backing paper lines up with the start mark. Unless this is done and you can see that the backing paper is attached to the top spindle properly it may be that the top spindle is not winding the paper or film forward. This might account for nothing showing.

When you put the insert into the camera and pressed the shutter can you recall a whirring noise as if the paper was being pulled? This should have resulted in the number 1 appearing. If this never showed on the screen then maybe the film has not been pulled through at all?

If you have access to a darkroom or very dark cupboard into which you can go I'd release the insert and in the dark check how much of the film remains on the bottom spindle or how much has been wound, if any, onto the top spindle. This should tell you how much has been pulled forward. Alternatively iIf you haven't got a darkroom or cupboard then can you get a changing bag into which you can place the camera and then release the insert?

I'd try and rewind the whole film back onto the lower spindle and then try again. You could try a mid-roll wind-on. That at least will tell you if the film is being pulled through as you will hear the noise. If it is being pulled through and ends up on the upper spindle then you know the film was properly attached to the upper spindle. I'd then suspect that the information screen's electronics may be faulty. I take it that from what you have said you hear the click each time you press the shutter button, do you hear a whirring winding noise as well? This is what you should hear as the film is being wound to the next frame

Let us know how it goes

asahijock
Forum: Pentax Medium Format 03-01-2017, 01:56 PM  
New owner of Pentax 645 Gen 1.
Posted By asahijock
Replies: 19
Views: 1,504
As far as B&W film is concerned then unless you find a very cheap lab I'd seriously consider processing your own B&W. All you need is a tank plus developer and fixer. You can either load the film in a lightproof changing bag or an enclosed cupboard that you can kneel in that can be made lightproof with curtain or even old towels stuffed into the door cracks. The alternative is a daylight film loader such as a Agfa Rodinax or the latest level loader that has been discussed on APUG.

You have the advantage of controlling the process and choosing the developer, neither of which can be done when using a lab. On few films you will save the cost of the equipment and over a lifetime of films you will save a fortune

asahijock
Forum: Pentax Medium Format 08-21-2016, 12:19 PM  
First roll of MF film
Posted By asahijock
Replies: 22
Views: 2,127
I know nothing of scanning and scanners but key to film photography is the "look" of the negative. If the highlights are very black on the neg then they will be burnt out(excessively white and lacking in detail on the print i.e. if there is no detail on the neg in that area there will be no detail possible in the print. Likewise with shadow detail.

Have a close look at the neg. Can you see detail in both the highlights and the shadows? if you can then the print should be capable of showing a full range of tones from such a negative.

If there is little or no details in the highlights it suggests an overexposed or overdeveloped negative. If this is a case of overexposure then it will be combined with shadows that are too light on a print as there will also be too much exposure there on the negative as well. If the shadows are very light, almost transparent on the negative then the shadows on the print will lack detail and no amount of scanning skills will produce detail. What is missing on the negative cannot be conjured up on the print. The answer there is more exposure on the negative to increase shadow details.

The trouble is that unless the scan of the print accurately replicates the negative, the scan can be misleading in terms of indicating the negative's faults

Try getting a silver gelatin( darkroom print) of the negative from a lab when it will be easier to work out what the negative's problems are, if any.

As others have said, I too have never experienced such contrast with Acros negs. If you know your camera's meter to be accurate then I suspect that the negative will be capable of producing a much better print that the one shown.

As a film user the three books by Ansel Adams( "The Camera", "The Negative", "The Print") are worth reading, especially "The Negative"

Best of luck with getting the bottom of the problem.

asahijock
Forum: Pentax Medium Format 10-29-2015, 09:17 AM  
Beginner requires some medium format guidance...
Posted By asahijock
Replies: 8
Views: 1,200
I'd go for the P645N. Have a look at the Ken Rockwell review of it.

asahijock
Forum: Pentax Medium Format 10-09-2015, 12:00 PM  
Recommended carrying solution for 645?
Posted By asahijock
Replies: 8
Views: 870
I'd second lenticular's suggestion. The Op Tech is very good

asahijock
Forum: Pentax Medium Format 10-09-2015, 11:58 AM  
Talisker at dusk
Posted By asahijock
Replies: 20
Views: 1,616
Talisker at dusk is fine. It's Talisker first thing in the morning you have to worry about:lol:
Forum: Pentax Medium Format 10-09-2015, 11:44 AM  
Dairy Protest Ottawa
Posted By asahijock
Replies: 14
Views: 980
Based on the nature of the subject and these pictures, the wide angle 55 seems like a much better bet than the 150. A nice set of pics

asahijock
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