large format

Large format refers to any imaging format of 9×12 cm (3-1/2x4-3/4 inch) or larger. Large format is larger than "medium format", the 6×6 cm (2¼×2¼ inch) or 6×9 cm (2¼×3½ inch) size of Hasselblad, Mamiya, Rollei, Kowa, and Pentax cameras (using 120- and 220-roll film), and much larger than the 24×36 mm (0.94×1.42 inch) frame of 35 mm format.
The main advantage of a large format, film or digital, is a higher resolution at the same pixel pitch, or the same resolution with larger pixels or grains which allows each pixel to capture more light enabling exceptional low-light capture. A 4×5 inch image (12.903 mm²) has about 15 times the area, and thus 15× the total resolution, of a 35 mm frame (864 mm²).
Large format cameras were some of the earliest photographic devices, and before enlargers were common, it was normal to just make 1:1 contact prints from a 4×5, 5×7, or 8×10-inch negative.

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  1. S

    Thin Large format porcelain

    Looking to lay large format (900x900mm) thin (5.5mm) porcelain floor tiles onto a sand and cement screed (SR1). The tiles have a fibreglass backing. The screed is fully dry and has wet ufh. Would you recommend a crack isolation membrane e.g., Ditra or similar, or lay the tiles directly onto the...
  2. davetheplumb

    Large format tile cutter options

    Currently using TX700N but obviously now too small for the 1200x600mm I'm increasingly being tasked with by customers. Up to now, I've been cutting the 1200mm length with angle grinder/diamond blade, but seeking advice on my next snap cutter from others experiences: So what's the skinny: Rubi...
  3. C

    Large Format Outdoor tiles advice.

    Hi, I'm new to the forum and fairly new to tiling, my only previous "proper" job was my recent bathroom (600x600 porcelain, about 25m walls and floors) which went pretty well. I'm now having a go at the patio - it's 30m, a concrete slab laid last year. It was laid in 3 bays, between screeds...
  4. L

    Large format tiles entire Ground floor through doorways.

    I’m tiling a ground floor of a house approx 120m through a ground floor with 5 doorways in the hall way leading into kitchen, living room, office, W/C and reception room. The tiles are 120 x 60 porcelain tiles 10mm thick. My problem is going through all the doorways where I know the tiles are...
  5. O

    London looking for a large format tiler comfortable with bevel cuts

    Looking for a large format tiler, comfortable with bevel cuts for outside corners. Job is in west London
  6. L

    Large format tiles on liquid screed

    Hi folks, We're having our downstairs tiles installed soon, about 82m2 of 1.2x1.2m square porcelain tiles onto an anhydrite liquid screed, with UFH. We've had reasonable quotes from two tilers, but they looking to do things a little differently, and we're not sure on the best approach. Both...
  7. backintothevoid

    cutting polishing advice/recommendations wet saw grinder large format

    Advice Hi guys, got some 60cmx60cm porcelain tiles to lay in a hallway with a modular pattern, 30x 60 30x30, 60x60. to do cuts i have a decent snap cutter. some tiles i need to trim a few mm off. i also need to smooth the cut edges. so i know i get a smoother and more precise cut with a wet saw...
  8. L

    Tilers needed for large format laminam tile install

    Hi there, New to this forum, I'm looking for a tiler to take on a small specialist Job in Bromley, essentially its a media unit around 6m long with drawers and doors. all panels will need to be cut and adhered to the doors with veining where possible running through. i've attached drawing to...
  9. simonwoody

    Tiling large format slate onto anhydrite screed

    I am planning to lay 600mm x 600mm x 20mm slate on to an anhydrite screed. It is a very thick tile! I was not familiar with anhydrite screeds and have been reading some of the horror stories. I was set on using Anhyfix but I see Tilemaster have stopped producing it and I spoke to Ditra technical...
  10. N

    Which tile backing board, tanking and adhesive for large format tile

    Hi Peeps, about to rip out my bath and put a new one in with a shower. I've done a few bathrooms already but because I'm using 60x60 tiles (28.5kg per m2 Polished ) I just need some advice on what board and adhesive I can use. The tap wall is stud and the side is block. The block is currently...
  11. G

    large format tiler needed

    Need tiler in Burford area for 3 large format tiles 2.6 high by 1.2 to put around fireplace. Needs cutting and mitring. Thanks Gilly
  12. T

    Experienced Large Format Floor Tiler for 60m2 Project (Bedfordshire)

    Lets start at the beginning, apologies for the backstory. Our house is 22 years old, the floor is a stony screed finish and has 6-7mm level difference between the hallway and the lounge. The floor was mostly clean, never been tiled too except for the kitchen where they were tiled from new. The...
  13. A

    Experience with extra large format tiles 36"x72" porcelain tile

    Hello, I am a homeowner living in the Metro Vancouver area in British Columbia. I am currently visiting tile stores to figure out what tiles to use for my bathroom reno. It will be a complet gut and replacement. It's a smallish bathroom 7ft x 8 ft and I plan to convert the tub into a walk in...
  14. U

    help with 6mm floor tiles

    Hi guys, newbie here and after advice/opinion So we have 210sqm of 120x120x6mm porcelain floor tiles to go down onto UFH with a Chemfloor cement floor. I have been told I need decoupling mat due to the size and been told not to use the membrane due to potential air pockets that could cause...
  15. P

    Using large format tile adhesive on 6x6 tiles

    I need a bed of between 7 - 15mm for some 6x6 quarry tiles, I can pick up some Mapei large format tile adhesive which goes to 20mm bed from B&Q, is there any reason why I cant use this
  16. MorganNick

    South West Large format tiler in Dorset needed

    Looking for an experienced large format tiler to join our team in Dorset. Tools, materials and van suppied along with an attractive salary.
  17. V

    Frame for large format tiles

    Hello! I have a dilemma, and if you could help me with advice, I would be very grateful. I am trying to install a feature wall, with two 120x250cm porcelain tile format, LED lights around the tiles and also would like to have my TV mounted on it. The original wall is an exterior plasterboard...
  18. D

    Large Format - 2 Rooms Meeting At 22Deg Angle At Doorway

    Hi there, I am looking for advice on tile layout for a new build. We are putting 600mm x 600mm large format in the kitchen and running it out the hallway. The kitchen is at a 22Deg to the hallway. The edges of the tiles will not aligned at this angle and so i am looking for advice how best to...
  19. C

    Large Format 6mm Tile Bow

    Hello, DIY help needed. Very large 6mm thick tiles. Some years ago, I salvaged some large 6mm tiles which were next to a skip. Can see adhesive lines on back of them but no actual adhesive? Assume somebody tried to stick them using non cement based adhesive? Anyway got go ahead to take them...
  20. L

    Very large format porcelain, partial anhydrate screed UFH

    Forgive me for I am noob... I have a 9m x 9m floor area that is one space, but half is a new build extension and half is 1920's old house Situation: The new build half has a Anhydrite screed floor with UFH. The old half is concrete floor WITHOUT UFH. The tiles are 1200mm x 600mm porcelain. The...
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