Olympus UK E-System User Group
Olympus UK E-System User Group

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Search: Posts Made By: Mark_R2
Forum: Legacy Lenses 3rd August 2018
Replies: 32
Views: 7,670
Posted By Mark_R2
Re: Lens Fungus

Just to clarify any confusion, I was talking about 'white' LEDs, as commonly used to replace filament bulbs. IIRC, these work by either emitting in the UV, which stimulates emission from 3 colour...
Forum: Legacy Lenses 2nd August 2018
Replies: 32
Views: 7,670
Posted By Mark_R2
Re: Lens Fungus

As has been pointed out, the UV from an LED may kill the fungus but this will be a long process (days or weeks of exposure). The LED should not be emitting in the UV-C band (required for germicidal...
Forum: Converters, adapters and extension tubes 1st August 2018
Replies: 7
Views: 629
Posted By Mark_R2
Re: m42 lenses plus nikkor lens

Well, a Nikkor 50mm f1.4 is still a nice gift. Depending on version and condition, it is likely to still be worth 60 to 100. I would say it is worth getting an adapter for it to try. You might find...
Forum: Converters, adapters and extension tubes 1st August 2018
Replies: 7
Views: 629
Posted By Mark_R2
Re: m42 lenses plus nikkor lens

I wish somebody would give me an f1.2 Nikkor! Likely to be worth 100 to 200

Are you sure it's an f1.2 lens and not 1:2 aperture ratio lens ie f2.

Without knowing the details of the M42 lens...
Forum: Site news 28th June 2018
Replies: 40
Views: 4,154
Posted By Mark_R2
Re: Are you purchasing anything through Amazon?

Cheers Ian. Order placed.

Mark
Forum: Site news 28th June 2018
Replies: 40
Views: 4,154
Posted By Mark_R2
Re: Are you purchasing anything through Amazon?

If you provide a link to

Tamron A035TM Tripod Mount for 100 - 400 mm VC USD Lens

I will buy it as I was going to buy one anyway.
...
Forum: E-System User Group goodies 11th June 2018
Replies: 6
Views: 1,588
Posted By Mark_R2
Re: MF adapter / Sunagor lens.

For OM to 4/3 DSLR, the official item is the MF-1 adapter. But there are plenty of Chinese clone items. I have several which I no longer use since I no longer have a 4/3 DSLR. You can have one for...
Forum: General photography discussion 28th May 2018
Replies: 3
Views: 569
Posted By Mark_R2
Re: Olympus 300mm f4.5

I concur with Dr Mark. The main limitation with the OM 300mm f4.5 is the colour fringing.

I have used a fair few old 300mm manual focus lenses in the past (on E3 DSLR). I found the Canon new FD...
Forum: General photography discussion 30th March 2018
Replies: 22
Views: 1,984
Posted By Mark_R2
Re: UV filter - all okay or get what you pay for?

Yes, you get what you pay for. I've always used Hoya filters. I use Hoya Pro1-D as they have very good coatings. But they are difficult to clean, as Richard mentions.

I always use some filter to...
Forum: General accessories 8th January 2018
Replies: 2
Views: 1,142
Posted By Mark_R2
Re: Quick release straps?

I use Op/Tech USA and have never had any problems. they have a huge range and I find the smaller clips (Mini QD i think they are called) are fine for Micro 4/3 cameras. As a general principle, I...
Forum: Telephoto 30th December 2017
Replies: 20
Views: 3,644
Posted By Mark_R2
Re: Bigma and EM-1..??

I should qualify this by saying the issue is the tendency for old telephoto lenses to give strong colour fringing when used on digital. This is the result of the interaction with the micro-lenses and...
Forum: Telephoto 30th December 2017
Replies: 20
Views: 3,644
Posted By Mark_R2
Re: Bigma and EM-1..??

I had one and it is capable of good images. Best to keep the sun behind you as the optical complexity means that it can suffer from a general loss of contrast (veiling flare). I made a circa 6-inch...
Forum: Software 22nd December 2017
Replies: 3
Views: 1,032
Posted By Mark_R2
Re: Last lightroom classic update

If you like to keep updaters for future use (as i do), then you can download them from:

https://helpx.adobe.com/lightroom/kb/lightroom-downloads.html

Click on the arrow next to 'Adobe Photoshop...
Forum: Looking for improvement 26th October 2017
Replies: 27
Views: 4,805
Posted By Mark_R2
Re: Panning for Motor Sports

Wow. Thank you guys for those kind words. I'm delighted to contribute usefully to this wonderful forum.

Mark
Forum: Looking for improvement 25th October 2017
Replies: 27
Views: 4,805
Posted By Mark_R2
Re: Panning for Motor Sports

This is quite normal with panning shots at slow shutter speeds. It is caused by the difference in motion RELATIVE TO YOU of the front, middle and back of the car. You will be panning by rotating...
Forum: Telephoto 11th September 2017
Replies: 25
Views: 4,216
Posted By Mark_R2
Re: Long Dilemma - please help

A sample from Oulton park on the 27th August. Taken at 1/320s ISO200, f10.

http://e-group.uk.net/gallery/data/500/Export-8275997_full.jpg (http://e-group.uk.net/gallery/showphoto.php/photo/95244)...
Forum: Telephoto 6th September 2017
Replies: 25
Views: 4,216
Posted By Mark_R2
Re: Long Dilemma - please help

Hi Rob,

I will look for some from my trip to Oulton Park two weeks ago. It will be Friday before I get chance to sort this out though. Mostly I don't go above 360mm, but I think I do have some...
Forum: Telephoto 6th September 2017
Replies: 25
Views: 4,216
Posted By Mark_R2
Re: Long Dilemma - please help

Are you looking at the Canon L 100-400mm Mk1 or Mk2 lens? By repute, the Mk2 is noticeably sharper, though the Mk1 is no slouch. But I think the Mk2 will be much more expensive than the Panasonic...
Forum: Converters, adapters and extension tubes 31st August 2017
Replies: 31
Views: 6,067
Posted By Mark_R2
Re: MC-1.4 Converter

It is also possible hat the lens locking pin on the camera is not coming fully out with the TC in place. Maybe the recess in the TC is just a bit too small. The locking pin triggers a switch that...
Forum: Olympus OM-D E-M1 20th August 2017
Replies: 34
Views: 2,862
Posted By Mark_R2
Re: Delay before I can take the next shot

Try this:

Go to the 'Spanner' menu and set 'Rec View' to 'Off'. I do a lot of motor sports photography and this is essential.

Mark
Forum: Introduce yourself 19th April 2017
Replies: 12
Views: 918
Posted By Mark_R2
Re: Hello from Stockport, Cheshire

Hi John,

PM sent with price and info on lens.

Regards,

Mark
Forum: Introduce yourself 17th April 2017
Replies: 12
Views: 918
Posted By Mark_R2
Re: Hello from Stockport, Cheshire

Two key questions are whether you are using 4/3 DSLR or micro-4/3 mirrorless camera, and whether you want autofocus or not. You mention 105mm and 150mm f2.8 lenses, which immediately suggests the...
Forum: For sale or wanted small ads 31st March 2017
Replies: 14
Views: 1,542
Posted By Mark_R2
Re: A number of items...

Hi Graham,

The Manfrotto 393 arrived today in excellent condition. I am very pleased. Thank you so much for selling it and the really fast delivery.

Best regards,

Mark
Forum: For sale or wanted small ads 29th March 2017
Replies: 14
Views: 1,542
Posted By Mark_R2
Re: A number of items...

Hi Graham,

I would like the Manfrotto 393 long lens bracket if is still available. 70 seems reasonable so I won't haggle. I can do a bank transfer. Please PM me to sort out details.

Thank you,...
Forum: Lens focus 15th February 2017
Replies: 9
Views: 1,574
Posted By Mark_R2
Re: Lenstip review - Olympus 12-100 Pro

There is no such thing as a perfect lens. Lens design is about compromise, about balancing one aberration against another. Improving one aspect of performance may make another worse. Geometrical...
Showing results 1 to 25 of 70

 
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